签到系统增加多选功能。去掉一些明显的bug。

志愿者报名系统，增加导出当月服务功能。

.gitignore

@@ -1,8 +1,4 @@
 APP_data/db.sqlite3
-checkIn/checkIn_media/qrcode/c_ID_5.png
-.idea/workspace.xml
-.idea/vcs.xml
-.idea/misc.xml
-.vscode/launch.json
+checkIn/checkIn_media/*
 
 

.idea/Niko_Public.iml

@@ -1,11 +1,47 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <module type="PYTHON_MODULE" version="4">
   <component name="NewModuleRootManager">
-    <content url="file://$MODULE_DIR$" />
-    <orderEntry type="jdk" jdkName="Python 3.6 (Niko_env)" jdkType="Python SDK" />
+    <content url="file://$MODULE_DIR$">
+      <excludeFolder url="file://$MODULE_DIR$/venv2" />
+      <excludeFolder url="file://$MODULE_DIR$/venv3" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/pip/_vendor/urllib3/contrib/_securetransport" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/pip/_vendor/urllib3/packages" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/pip/_vendor/urllib3/util" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/pip/_vendor/cachecontrol" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/pip/_vendor/certifi" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/pip/_vendor/chardet" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/pip/_vendor/colorama" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/pip/_vendor/distlib" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/pip/_vendor/html5lib" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/pip/_vendor/idna" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/pip/_vendor/lockfile" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/pip/_vendor/pkg_resources" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/pip/_vendor/progress" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/pip/_vendor/pytoml" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/pip/_vendor/requests" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/pip/_vendor/webencodings" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/pkg_resources/extern" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/setuptools/extern" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/captcha" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/colorama" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/colorama-0.3.9.dist-info" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/django" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/Django-1.11.5.dist-info" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/django_ranged_response-0.2.0-py3.6.egg-info" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/django_simple_captcha-0.5.9-py3.6.egg-info" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/PIL" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/Pillow-5.2.0.dist-info" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/pip-18.0.dist-info" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/pytz" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/pytz-2018.5.dist-info" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/qrcode" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/qrcode-6.0.dist-info" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/ranged_response" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/setuptools-28.8.0.dist-info" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/site-packages/six-1.11.0.dist-info" />
+      <excludeFolder url="file://$MODULE_DIR$/venv/Lib/tcl8.6" />
+    </content>
+    <orderEntry type="jdk" jdkName="Python 3.6 (Niko_Public)" jdkType="Python SDK" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
-  <component name="TestRunnerService">
-    <option name="PROJECT_TEST_RUNNER" value="Unittests" />
-  </component>
 </module>

.idea/inspectionProfiles/Project_Default.xml

@@ -0,0 +1,27 @@
+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="HtmlUnknownAttribute" enabled="true" level="WARNING" enabled_by_default="true">
+      <option name="myValues">
+        <value>
+          <list size="1">
+            <item index="0" class="java.lang.String" itemvalue="align" />
+          </list>
+        </value>
+      </option>
+      <option name="myCustomValuesEnabled" value="true" />
+    </inspection_tool>
+    <inspection_tool class="PyCompatibilityInspection" enabled="true" level="WARNING" enabled_by_default="true">
+      <option name="ourVersions">
+        <value>
+          <list size="4">
+            <item index="0" class="java.lang.String" itemvalue="3.6" />
+            <item index="1" class="java.lang.String" itemvalue="3.7" />
+            <item index="2" class="java.lang.String" itemvalue="3.8" />
+            <item index="3" class="java.lang.String" itemvalue="3.9" />
+          </list>
+        </value>
+      </option>
+    </inspection_tool>
+  </profile>
+</component>

.idea/misc.xml

@@ -1,7 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.6 (Niko_env)" project-jdk-type="Python SDK" />
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.6 (Niko_Public)" project-jdk-type="Python SDK" />
   <component name="PyCharmProfessionalAdvertiser">
     <option name="shown" value="true" />
   </component>
+  <component name="PythonCompatibilityInspectionAdvertiser">
+    <option name="version" value="3" />
+  </component>
 </project>

.idea/workspace.xml

@@ -1,151 +1,589 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="AutoImportSettings">
+    <option name="autoReloadType" value="SELECTIVE" />
+  </component>
+  <component name="BranchesTreeState">
+    <expand>
+      <path>
+        <item name="ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="LOCAL_ROOT" type="e8cecc67:BranchNodeDescriptor" />
+      </path>
+    </expand>
+    <select />
+  </component>
   <component name="ChangeListManager">
     <list default="true" id="5d56ca4e-fa09-4724-964f-713958f1a350" name="Default" comment="">
+      <change afterPath="$PROJECT_DIR$/.idea/inspectionProfiles/Project_Default.xml" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/checkIn/checkIn_media/qrcode/c_ID_6.png" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/checkIn/migrations/0006_item_createtime.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/common_commands.txt" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/dati/data.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/dati/migrations/0003_auto_20200905_1110.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/dati/migrations/0004_auto_20200905_1412.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/dati/migrations/0005_auto_20200905_1600.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/dati/migrations/0006_auto_20200909_1457.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/dati/migrations/0007_scores_address.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/dati/templates/dati/ranking.html" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/_distutils_hack/__init__.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/_distutils_hack/override.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/distutils-precedence.pth" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/djangorestframework-3.11.1.dist-info/INSTALLER" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/djangorestframework-3.11.1.dist-info/LICENSE.md" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/djangorestframework-3.11.1.dist-info/METADATA" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/djangorestframework-3.11.1.dist-info/RECORD" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/djangorestframework-3.11.1.dist-info/WHEEL" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/djangorestframework-3.11.1.dist-info/top_level.txt" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip-20.2.3.dist-info/INSTALLER" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip-20.2.3.dist-info/LICENSE.txt" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip-20.2.3.dist-info/METADATA" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip-20.2.3.dist-info/RECORD" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip-20.2.3.dist-info/WHEEL" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip-20.2.3.dist-info/entry_points.txt" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip-20.2.3.dist-info/top_level.txt" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/cli/__init__.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/cli/autocompletion.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/cli/base_command.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/cli/cmdoptions.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/cli/command_context.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/cli/main.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/cli/main_parser.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/cli/parser.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/cli/progress_bars.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/cli/req_command.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/cli/spinners.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/cli/status_codes.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/commands/cache.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/commands/debug.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/distributions/__init__.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/distributions/base.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/distributions/installed.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/distributions/sdist.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/distributions/wheel.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/index/__init__.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/index/collector.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/index/package_finder.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/main.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/models/candidate.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/models/direct_url.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/models/format_control.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/models/link.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/models/scheme.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/models/search_scope.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/models/selection_prefs.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/models/target_python.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/models/wheel.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/network/__init__.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/network/auth.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/network/cache.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/network/download.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/network/lazy_wheel.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/network/session.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/network/utils.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/network/xmlrpc.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/operations/build/__init__.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/operations/build/metadata.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/operations/build/metadata_legacy.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/operations/build/wheel.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/operations/build/wheel_legacy.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/operations/install/__init__.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/operations/install/editable_legacy.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/operations/install/legacy.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/operations/install/wheel.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/pyproject.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/req/constructors.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/resolution/__init__.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/resolution/base.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/resolution/legacy/__init__.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/resolution/legacy/resolver.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/resolution/resolvelib/__init__.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/resolution/resolvelib/base.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/resolution/resolvelib/candidates.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/resolution/resolvelib/factory.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/resolution/resolvelib/provider.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/resolution/resolvelib/requirements.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/resolution/resolvelib/resolver.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/self_outdated_check.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/utils/compat.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/utils/compatibility_tags.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/utils/datetime.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/utils/direct_url_helpers.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/utils/distutils_args.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/utils/entrypoints.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/utils/filetypes.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/utils/inject_securetransport.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/utils/models.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/utils/parallel.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/utils/pkg_resources.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/utils/subprocess.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/utils/unpacking.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/utils/urls.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/utils/virtualenv.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/utils/wheel.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/vcs/versioncontrol.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_internal/wheel_builder.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_vendor/contextlib2.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_vendor/msgpack/ext.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_vendor/packaging/_typing.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_vendor/packaging/tags.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_vendor/pep517/__init__.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_vendor/pep517/_in_process.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_vendor/pep517/build.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_vendor/pep517/check.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_vendor/pep517/colorlog.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_vendor/pep517/compat.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_vendor/pep517/dirtools.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_vendor/pep517/envbuild.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_vendor/pep517/meta.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_vendor/pep517/wrappers.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_vendor/resolvelib/__init__.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_vendor/resolvelib/compat/__init__.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_vendor/resolvelib/compat/collections_abc.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_vendor/resolvelib/providers.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_vendor/resolvelib/reporters.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_vendor/resolvelib/resolvers.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_vendor/resolvelib/structs.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_vendor/toml/__init__.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_vendor/toml/common.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_vendor/toml/decoder.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_vendor/toml/encoder.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_vendor/toml/ordered.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/venv/Lib/site-packages/pip/_vendor/toml/tz.py" afterDir="false" />
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+      <change beforePath="$PROJECT_DIR$/checkIn/templates/checkIn/itemUpdate.html" beforeDir="false" afterPath="$PROJECT_DIR$/checkIn/templates/checkIn/itemUpdate.html" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/checkIn/templates/checkIn/newItems.html" beforeDir="false" afterPath="$PROJECT_DIR$/checkIn/templates/checkIn/newItems.html" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/checkIn/templates/checkIn/user/checkIn.html" beforeDir="false" afterPath="$PROJECT_DIR$/checkIn/templates/checkIn/user/checkIn.html" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/checkIn/userViews.py" beforeDir="false" afterPath="$PROJECT_DIR$/checkIn/userViews.py" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/checkIn/views.py" beforeDir="false" afterPath="$PROJECT_DIR$/checkIn/views.py" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/dati/forms.py" beforeDir="false" afterPath="$PROJECT_DIR$/dati/forms.py" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/dati/models.py" beforeDir="false" afterPath="$PROJECT_DIR$/dati/models.py" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/dati/static/dati/dati_1.jpg" beforeDir="false" afterPath="$PROJECT_DIR$/dati/static/dati/dati_1.jpg" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/dati/static/dati/dati_2.jpg" beforeDir="false" afterPath="$PROJECT_DIR$/dati/static/dati/dati_2.jpg" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/dati/templates/dati/bottom.html" beforeDir="false" afterPath="$PROJECT_DIR$/dati/templates/dati/bottom.html" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/dati/templates/dati/dati.html" beforeDir="false" afterPath="$PROJECT_DIR$/dati/templates/dati/dati.html" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/dati/templates/dati/directPage.html" beforeDir="false" afterPath="$PROJECT_DIR$/dati/templates/dati/directPage.html" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/dati/templates/dati/index.html" beforeDir="false" afterPath="$PROJECT_DIR$/dati/templates/dati/index.html" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/dati/templates/dati/layout.html" beforeDir="false" afterPath="$PROJECT_DIR$/dati/templates/dati/layout.html" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/dati/templates/dati/layout1.html" beforeDir="false" afterPath="$PROJECT_DIR$/dati/templates/dati/layout1.html" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/dati/urls.py" beforeDir="false" afterPath="$PROJECT_DIR$/dati/urls.py" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/dati/views.py" beforeDir="false" afterPath="$PROJECT_DIR$/dati/views.py" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/manage.py" beforeDir="false" afterPath="$PROJECT_DIR$/manage.py" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/static/dati/dati_1.jpg" beforeDir="false" afterPath="$PROJECT_DIR$/static/dati/dati_1.jpg" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/static/dati/dati_2.jpg" beforeDir="false" afterPath="$PROJECT_DIR$/static/dati/dati_2.jpg" afterDir="false" />
     </list>
-    <option name="EXCLUDED_CONVERTED_TO_IGNORED" value="true" />
-    <option name="TRACKING_ENABLED" value="true" />
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
     <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
     <option name="LAST_RESOLUTION" value="IGNORE" />
   </component>
-  <component name="FileEditorManager">
-    <leaf SIDE_TABS_SIZE_LIMIT_KEY="300">
-      <file leaf-file-name="trans_real.py" pinned="false" current-in-tab="false">
-        <entry file="file://$USER_HOME$/AppData/Local/Programs/Python/Python36/Lib/site-packages/django/utils/translation/trans_real.py">
-          <provider selected="true" editor-type-id="text-editor">
-            <state>
-              <caret line="115" selection-start-line="115" selection-end-line="115" />
-            </state>
-          </provider>
-        </entry>
-      </file>
-      <file leaf-file-name="settings.py" pinned="false" current-in-tab="false">
-        <entry file="file://$PROJECT_DIR$/Niko/settings.py">
-          <provider selected="true" editor-type-id="text-editor">
-            <state>
-              <caret line="124" column="25" selection-start-line="124" selection-start-column="25" selection-end-line="124" selection-end-column="25" />
-            </state>
-          </provider>
-        </entry>
-      </file>
-      <file leaf-file-name="addonViews.py" pinned="false" current-in-tab="false">
-        <entry file="file://$PROJECT_DIR$/checkIn/addonViews.py">
-          <provider selected="true" editor-type-id="text-editor">
-            <state>
-              <caret line="3" column="11" selection-start-line="3" selection-start-column="11" selection-end-line="3" selection-end-column="11" />
-            </state>
-          </provider>
-        </entry>
-      </file>
-      <file leaf-file-name="luckydraw.html" pinned="false" current-in-tab="false">
-        <entry file="file://$PROJECT_DIR$/checkIn/templates/checkIn/addon/luckydraw.html">
-          <provider selected="true" editor-type-id="text-editor">
-            <state>
-              <caret line="29" column="71" selection-start-line="29" selection-start-column="71" selection-end-line="29" selection-end-column="71" />
-            </state>
-          </provider>
-        </entry>
-      </file>
-      <file leaf-file-name="luckydrawResult.html" pinned="false" current-in-tab="true">
-        <entry file="file://$PROJECT_DIR$/checkIn/templates/checkIn/addon/luckydrawResult.html">
-          <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="224">
-              <caret line="14" column="13" selection-start-line="14" selection-start-column="13" selection-end-line="14" selection-end-column="13" />
-            </state>
-          </provider>
-        </entry>
-      </file>
-    </leaf>
+  <component name="FileTemplateManagerImpl">
+    <option name="RECENT_TEMPLATES">
+      <list>
+        <option value="HTML File" />
+      </list>
+    </option>
   </component>
   <component name="Git.Settings">
     <option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$" />
   </component>
-  <component name="IdeDocumentHistory">
-    <option name="CHANGED_PATHS">
-      <list>
-        <option value="$PROJECT_DIR$/Niko/settings.py" />
-        <option value="$PROJECT_DIR$/checkIn/templates/checkIn/addon/luckydraw.html" />
-      </list>
-    </option>
+  <component name="GitSEFilterConfiguration">
+    <file-type-list>
+      <filtered-out-file-type name="LOCAL_BRANCH" />
+      <filtered-out-file-type name="REMOTE_BRANCH" />
+      <filtered-out-file-type name="TAG" />
+      <filtered-out-file-type name="COMMIT_BY_MESSAGE" />
+    </file-type-list>
   </component>
-  <component name="ProjectFrameBounds" extendedState="6">
-    <option name="x" value="85" />
-    <option name="y" value="25" />
-    <option name="width" value="1750" />
-    <option name="height" value="970" />
+  <component name="ProjectId" id="1XTvsoe8XGzk4oIEooIGQdlh6Mt" />
+  <component name="ProjectLevelVcsManager" settingsEditedManually="true">
+    <ConfirmationsSetting value="2" id="Add" />
   </component>
-  <component name="ProjectLevelVcsManager" settingsEditedManually="true" />
-  <component name="ProjectView">
-    <navigator proportions="" version="1">
-      <foldersAlwaysOnTop value="true" />
-    </navigator>
-    <panes>
-      <pane id="ProjectPane">
-        <subPane>
-          <expand>
-            <path>
-              <item name="Niko_Public" type="b2602c69:ProjectViewProjectNode" />
-              <item name="Niko_Public" type="462c0819:PsiDirectoryNode" />
-            </path>
-            <path>
-              <item name="Niko_Public" type="b2602c69:ProjectViewProjectNode" />
-              <item name="Niko_Public" type="462c0819:PsiDirectoryNode" />
-              <item name="checkIn" type="462c0819:PsiDirectoryNode" />
-            </path>
-            <path>
-              <item name="Niko_Public" type="b2602c69:ProjectViewProjectNode" />
-              <item name="Niko_Public" type="462c0819:PsiDirectoryNode" />
-              <item name="checkIn" type="462c0819:PsiDirectoryNode" />
-              <item name="templates" type="462c0819:PsiDirectoryNode" />
-            </path>
-            <path>
-              <item name="Niko_Public" type="b2602c69:ProjectViewProjectNode" />
-              <item name="Niko_Public" type="462c0819:PsiDirectoryNode" />
-              <item name="checkIn" type="462c0819:PsiDirectoryNode" />
-              <item name="templates" type="462c0819:PsiDirectoryNode" />
-              <item name="checkIn" type="462c0819:PsiDirectoryNode" />
-            </path>
-            <path>
-              <item name="Niko_Public" type="b2602c69:ProjectViewProjectNode" />
-              <item name="Niko_Public" type="462c0819:PsiDirectoryNode" />
-              <item name="checkIn" type="462c0819:PsiDirectoryNode" />
-              <item name="templates" type="462c0819:PsiDirectoryNode" />
-              <item name="checkIn" type="462c0819:PsiDirectoryNode" />
-              <item name="addon" type="462c0819:PsiDirectoryNode" />
-            </path>
-          </expand>
-          <select />
-        </subPane>
-      </pane>
-      <pane id="Scope" />
-    </panes>
+  <component name="ProjectViewState">
+    <option name="hideEmptyMiddlePackages" value="true" />
+    <option name="showLibraryContents" value="true" />
   </component>
   <component name="PropertiesComponent">
-    <property name="last_opened_file_path" value="$PROJECT_DIR$/Niko_env" />
-    <property name="settings.editor.selected.configurable" value="editor.preferences.fonts.default" />
+    <property name="ASKED_ADD_EXTERNAL_FILES" value="true" />
+    <property name="DefaultHtmlFileTemplate" value="HTML File" />
+    <property name="RunOnceActivity.OpenProjectViewOnStart" value="true" />
+    <property name="RunOnceActivity.ShowReadmeOnStart" value="true" />
+    <property name="SHARE_PROJECT_CONFIGURATION_FILES" value="true" />
+    <property name="last_opened_file_path" value="$PROJECT_DIR$/volunteer_arrangement" />
+    <property name="settings.editor.selected.configurable" value="preferences.keymap" />
   </component>
-  <component name="RunDashboard">
-    <option name="ruleStates">
-      <list>
-        <RuleState>
-          <option name="name" value="ConfigurationTypeDashboardGroupingRule" />
-        </RuleState>
-        <RuleState>
-          <option name="name" value="StatusDashboardGroupingRule" />
-        </RuleState>
-      </list>
-    </option>
+  <component name="RecentsManager">
+    <key name="CopyFile.RECENT_KEYS">
+      <recent name="D:\Users\Jees\Documents\coding\Niko_Public\volunteer_arrangement" />
+      <recent name="D:\Users\Jees\Documents\coding\Niko_Public\volunteer_arrangement\templates\volunteer_arrangement" />
+      <recent name="D:\Users\Jees\Documents\coding\Niko_Public\dati\static" />
+    </key>
+    <key name="MoveFile.RECENT_KEYS">
+      <recent name="D:\Users\Jees\Documents\coding\Niko_Public" />
+      <recent name="D:\Users\Jees\Documents\coding\Niko_Public\dati\static\dati" />
+      <recent name="D:\Users\Jees\Documents\coding\Niko_Public\dati" />
+    </key>
   </component>
   <component name="RunManager">
     <configuration default="true" type="PythonConfigurationType" factoryName="Python">
@@ -165,6 +603,9 @@
       <option name="SHOW_COMMAND_LINE" value="false" />
       <option name="EMULATE_TERMINAL" value="false" />
       <option name="MODULE_MODE" value="false" />
+      <option name="REDIRECT_INPUT" value="false" />
+      <option name="INPUT_FILE" value="" />
+      <method v="2" />
     </configuration>
     <configuration name="manage" type="PythonConfigurationType" factoryName="Python" temporary="true">
       <module name="Niko_Public" />
@@ -183,6 +624,9 @@
       <option name="SHOW_COMMAND_LINE" value="false" />
       <option name="EMULATE_TERMINAL" value="false" />
       <option name="MODULE_MODE" value="false" />
+      <option name="REDIRECT_INPUT" value="false" />
+      <option name="INPUT_FILE" value="" />
+      <method v="2" />
     </configuration>
     <recent_temporary>
       <list>
@@ -190,6 +634,7 @@
       </list>
     </recent_temporary>
   </component>
+  <component name="SpellCheckerSettings" RuntimeDictionaries="0" Folders="0" CustomDictionaries="0" DefaultDictionary="application-level" UseSingleDictionary="true" transferred="true" />
   <component name="SvnConfiguration">
     <configuration />
   </component>
@@ -203,164 +648,37 @@
     </task>
     <servers />
   </component>
-  <component name="ToolWindowManager">
-    <frame x="-7" y="-7" width="1550" height="838" extended-state="6" />
-    <layout>
-      <window_info active="true" content_ui="combo" id="Project" order="0" visible="true" weight="0.22526042" />
-      <window_info anchor="bottom" id="TODO" order="6" />
-      <window_info anchor="bottom" id="Event Log" order="7" side_tool="true" />
-      <window_info anchor="bottom" id="Version Control" order="7" />
-      <window_info anchor="bottom" id="Python Console" order="7" />
-      <window_info anchor="bottom" id="Run" order="2" weight="0.32872927" />
-      <window_info id="Structure" order="1" side_tool="true" weight="0.25" />
-      <window_info anchor="bottom" id="Terminal" order="7" />
-      <window_info id="Favorites" order="2" side_tool="true" />
-      <window_info anchor="bottom" id="Debug" order="3" weight="0.39917126" />
-      <window_info anchor="right" content_ui="combo" id="Hierarchy" order="2" weight="0.25" />
-      <window_info anchor="right" id="Commander" internal_type="SLIDING" order="0" type="SLIDING" weight="0.4" />
-      <window_info anchor="right" id="Ant Build" order="1" weight="0.25" />
-      <window_info anchor="bottom" id="Message" order="0" />
-      <window_info anchor="bottom" id="Inspection" order="5" weight="0.4" />
-      <window_info anchor="bottom" id="Cvs" order="4" weight="0.25" />
-      <window_info anchor="bottom" id="Find" order="1" />
-    </layout>
+  <component name="Vcs.Log.Tabs.Properties">
+    <option name="TAB_STATES">
+      <map>
+        <entry key="MAIN">
+          <value>
+            <State />
+          </value>
+        </entry>
+      </map>
+    </option>
+    <option name="oldMeFiltersMigrated" value="true" />
   </component>
-  <component name="VcsContentAnnotationSettings">
-    <option name="myLimit" value="2678400000" />
+  <component name="VcsManagerConfiguration">
+    <option name="ADD_EXTERNAL_FILES_SILENTLY" value="true" />
+    <MESSAGE value="签到系统增加多选功能。去掉一些明显的bug。&#10;志愿者报名系统，增加导出当月服务功能。" />
+    <option name="LAST_COMMIT_MESSAGE" value="签到系统增加多选功能。去掉一些明显的bug。&#10;志愿者报名系统，增加导出当月服务功能。" />
   </component>
-  <component name="editorHistoryManager">
-    <entry file="file://$USER_HOME$/AppData/Local/Programs/Python/Python36/Lib/site-packages/django/utils/translation/trans_real.py">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="1380">
-          <caret line="115" selection-start-line="115" selection-end-line="115" />
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-    </entry>
-    <entry file="file://$PROJECT_DIR$/Niko/settings.py">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="1830">
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-    </entry>
-    <entry file="file://$PROJECT_DIR$/checkIn/addonViews.py">
-      <provider selected="true" editor-type-id="text-editor">
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-          <caret line="3" column="11" selection-start-line="3" selection-start-column="11" selection-end-line="3" selection-end-column="11" />
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-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/checkIn/templates/checkIn/addon/luckydraw.html">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="435">
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-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/checkIn/templates/checkIn/addon/luckydrawResult.html">
-      <provider selected="true" editor-type-id="text-editor">
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-    <entry file="file://$USER_HOME$/AppData/Local/Programs/Python/Python36/Lib/site-packages/django/utils/translation/trans_real.py">
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-    <entry file="file://$PROJECT_DIR$/checkIn/addonViews.py">
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-    <entry file="file://$PROJECT_DIR$/checkIn/templates/checkIn/addon/luckydraw.html">
-      <provider selected="true" editor-type-id="text-editor">
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-    <entry file="file://$PROJECT_DIR$/checkIn/templates/checkIn/addon/luckydrawResult.html">
-      <provider selected="true" editor-type-id="text-editor">
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-    <entry file="file://$USER_HOME$/AppData/Local/Programs/Python/Python36/Lib/site-packages/django/utils/translation/trans_real.py">
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-    <entry file="file://$PROJECT_DIR$/Niko/settings.py">
-      <provider selected="true" editor-type-id="text-editor">
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-    <entry file="file://$USER_HOME$/AppData/Local/Programs/Python/Python36/Lib/site-packages/django/utils/translation/trans_real.py">
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-    <entry file="file://$PROJECT_DIR$/checkIn/forms.py">
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-    <entry file="file://$PROJECT_DIR$/Niko/settings.py">
-      <provider selected="true" editor-type-id="text-editor">
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-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/checkIn/addonViews.py">
-      <provider selected="true" editor-type-id="text-editor">
-        <state>
-          <caret line="3" column="11" selection-start-line="3" selection-start-column="11" selection-end-line="3" selection-end-column="11" />
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/checkIn/templates/checkIn/addon/luckydraw.html">
-      <provider selected="true" editor-type-id="text-editor">
-        <state>
-          <caret line="29" column="71" selection-start-line="29" selection-start-column="71" selection-end-line="29" selection-end-column="71" />
-        </state>
-      </provider>
-    </entry>
-    <entry file="file://$PROJECT_DIR$/checkIn/templates/checkIn/addon/luckydrawResult.html">
-      <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="224">
-          <caret line="14" column="13" selection-start-line="14" selection-start-column="13" selection-end-line="14" selection-end-column="13" />
-        </state>
-      </provider>
-    </entry>
+  <component name="XDebuggerManager">
+    <breakpoint-manager>
+      <default-breakpoints>
+        <breakpoint type="python-exception">
+          <properties notifyOnTerminate="true" exception="BaseException">
+            <option name="notifyOnTerminate" value="true" />
+          </properties>
+        </breakpoint>
+      </default-breakpoints>
+    </breakpoint-manager>
+    <watches-manager>
+      <configuration name="PythonConfigurationType">
+        <watch expression="monthly_report[0].keys()" language="Python" />
+      </configuration>
+    </watches-manager>
   </component>
 </project>

.vscode/settings.json

@@ -1,3 +1,11 @@
 {
-    "python.linting.enabled": false
+    "python.linting.enabled": false,
+    "python.pythonPath": "venv\\Scripts\\python.exe",
+    "python.venvFolders": [
+        "envs",
+        ".pyenv",
+        ".direnv",
+        ".venv"
+    ],
+    "git.ignoreLimitWarning": true
 }

Niko/settings.py

@@ -12,7 +12,6 @@ https://docs.djangoproject.com/en/1.9/ref/settings/
 
 import os
 import posixpath
-import captcha
 
 # Build paths inside the project like this: os.path.join(BASE_DIR, ...)
 BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
@@ -27,7 +26,7 @@ SECRET_KEY = '3eab158c-8531-4c6b-800e-9181f6511a41'
 # SECURITY WARNING: don't run with debug turned on in production!
 DEBUG = True
 
-ALLOWED_HOSTS = ['www.qiandao.name', '127.0.0.1','qiandao.name','localhost']
+ALLOWED_HOSTS = [ '127.0.0.1','localhost','www.pujianghui.work']
 
 
 # Application definition
@@ -41,9 +40,10 @@ INSTALLED_APPS = [
     'django.contrib.messages',
     'django.contrib.staticfiles',
     'checkIn',
-    'captcha',
     'dati',
-	'library',
+    'library',
+    'captcha',
+    'volunteer_arrangement',
 ]
 
 MIDDLEWARE_CLASSES = [
@@ -140,7 +140,7 @@ STATIC_URL = '/static/'
 
 STATIC_ROOT = posixpath.join(*(BASE_DIR.split(os.path.sep) + ['static']))
 
-# CAPTCHA_CHALLENGE_FUNCT = 'captcha.helpers.math_challenge'
+CAPTCHA_CHALLENGE_FUNCT = 'captcha.helpers.math_challenge'
 
 CAPTCHA_LETTER_ROTATION = (-10,10)
 

Niko/urls.py

@@ -6,13 +6,12 @@ from django.conf.urls import include, url
 from django.contrib import admin
 from checkIn import views, AJAX, userViews, staticViews, addonViews
 
-
 # Uncomment the next two lines to enable the admin:
 # from django.contrib import admin
 # admin.autodiscover()
 
 urlpatterns = [
-    
+
     # Examples:
     # url(r'^$', Niko.views.home, name='home'),
     # url(r'^Niko/', include('Niko.Niko.urls')),
@@ -25,15 +24,16 @@ urlpatterns = [
     url(r'^$', views.index, name='index'),
     url(r'^prison/', admin.site.urls),
     url(r'^checkIn/([a-zA-Z]+)/$', views.checkIn, name='hostViews'),
-    url(r'^checkIn/AJAX/([a-zA-Z]+)/$',AJAX.Ajax),
-    url(r'^checkIn/user/([a-zA-Z]+)/$',userViews.userURL, name='visitViews'),
+    url(r'^checkIn/AJAX/([a-zA-Z]+)/$', AJAX.Ajax),
+    url(r'^checkIn/user/([a-zA-Z]+)/$', userViews.userURL, name='visitViews'),
     url(r'^checkIn/static/([a-zA-Z]+)/$', staticViews.staticURLs, name='staticViews'),
     url(r'^addon/([a-zA-Z]+)/$', addonViews.addonURL, name='addonViews'),
     url(r'^cq/dati/', include('dati.urls')),
-	url(r'^cq/library/', include('library.urls')),
+    url(r'^cq/library/', include('library.urls')),
+    url(r'^cq/volunteer/', include('volunteer_arrangement.urls')),
 
 ]
 
 urlpatterns += [
     url(r'^captcha/', include('captcha.urls')),
-]
+]

checkIn/addonViews.py

@@ -18,7 +18,7 @@ def addonURL(request, url):
             awardQty = int(request.POST['qty'])
             checkIn_ID = request.POST['c_ID']
             IDs = Luckydraw.objects.filter(c_ID=checkIn_ID, result=None).order_by('order')[:awardQty].values('ID')
-            Luckydraw.objects.filter(ID__in = IDs).update(result=awardName)  # 将获奖状态写入数据库
+            Luckydraw.objects.filter(ID__in=IDs).update(result=awardName)  # 将获奖状态写入数据库
 
             # 读取获奖名单
             luckydraw.c_ID = checkIn_ID
@@ -26,16 +26,16 @@ def addonURL(request, url):
             awardList = Luckydraw.getAwardList(luckydraw)
             result2 = None
             keys = None
-            try:
-                createTime = result[0]['createTime']
-            except:
-                createTime = None
+            # try:
+            #     createTime = result[0]['createTime']
+            # except:
+            #     createTime = None
             if len(awardList) != 0:
                 keys = eval(awardList[0]['content']).keys()
                 result2 = []
                 for x in awardList:
                     line = eval(x['content'])
-                    if x['result'] == None:
+                    if x['result'] is None:
                         line['result'] = ' '
                     else:
                         line['result'] = x['result']

checkIn/admin.py

@@ -5,7 +5,7 @@ from checkIn.models import Organizer, CheckIn, Item, UserContent
 
 
 class ItemAdmin(admin.ModelAdmin):
-    list_display = ['ID',]
+    list_display = ['ID']
     search_field = ['c_ID']
 
 class contentAdmin(admin.ModelAdmin):

checkIn/functions.py

@@ -7,7 +7,7 @@ class DateEncoder(json.JSONEncoder):
     def default(self, obj):  
         if isinstance(obj, datetime.datetime):  
             return obj.strftime('%Y-%m-%d %H:%M:%S')  
-        elif isinstance(obj, date):  
+        elif isinstance(obj, datetime.date):
             return obj.strftime("%Y-%m-%d")  
         else:  
             return json.JSONEncoder.default(self, obj)

checkIn/migrations/0006_item_createtime.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.5 on 2021-03-07 08:08
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('checkIn', '0005_luckydraw'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='item',
+            name='createTime',
+            field=models.DateTimeField(auto_now_add=True, null=True),
+        ),
+    ]

checkIn/models.py

@@ -3,10 +3,11 @@ from django.contrib.auth.hashers import check_password
 from datetime import datetime
 from .functions import *
 
+
 # Create your models here.
 
 
-class Organizer (models.Model):
+class Organizer(models.Model):
     # 定义扫码组织者
     ID = models.AutoField(primary_key=True)
     username = models.CharField(max_length=30, unique=True)
@@ -22,10 +23,10 @@ class Organizer (models.Model):
     emailConfirmation = models.BooleanField(default=False)
     mobileConfirmation = models.BooleanField(default=False)
 
-    def __str__ (self):
+    def __str__(self):
         return self.username
 
-    def createNew (self):
+    def createNew(self):
         Organizer.objects.get_or_create(username=self.username,
                                         nickname=self.nickname,
                                         email=self.email,
@@ -35,18 +36,17 @@ class Organizer (models.Model):
                                         registerIP=self.registerIP,
                                         )
 
-
-    def sameUsername (self):
+    def sameUsername(self):
         # 检查是否有同样的用户名
-        result = len(Organizer.objects.filter(username = self.username))
+        result = len(Organizer.objects.filter(username=self.username))
         if result == 0:
             return False
         else:
             return True
 
-    def sameMobile (self):
+    def sameMobile(self):
         # 检查是否有同样的手机号码
-        result = len(Organizer.objects.filter(mobile = self.mobile))
+        result = len(Organizer.objects.filter(mobile=self.mobile))
         if result == 0:
             return False
         else:
@@ -58,18 +58,19 @@ class Organizer (models.Model):
     def login(self):
         result = False
         try:
-            result = check_password(self.password, Organizer.objects.filter(username=self.username).values('password')[0]['password'])
+            result = check_password(self.password,
+                                    Organizer.objects.filter(username=self.username).values('password')[0]['password'])
         except:
             pass
         return result
-    
+
     def searchByID(self):
         try:
             result = Organizer.objects.get(ID=self.ID)
             return result
         except:
             return None
-        
+
     def searchByUsername(self):
         try:
             result = Organizer.objects.get(username=self.username)
@@ -79,15 +80,15 @@ class Organizer (models.Model):
 
     def updateByID(self):
         Organizer.objects.filter(ID=self.ID).update(username=self.username,
-                                                nickname=self.nickname,
-                                                email=self.email,
-                                                mobile=self.mobile,
-                                                password=self.password,
-                                                photo=self.photo,
-                                                )
+                                                    nickname=self.nickname,
+                                                    email=self.email,
+                                                    mobile=self.mobile,
+                                                    password=self.password,
+                                                    photo=self.photo,
+                                                    )
 
 
-class CheckIn (models.Model):
+class CheckIn(models.Model):
     # 定义一个扫码签到活动
     ID = models.AutoField(primary_key=True)
     startTime = models.DateField()
@@ -95,8 +96,8 @@ class CheckIn (models.Model):
     createTime = models.DateTimeField(null=True, blank=True)
     o_ID = models.IntegerField()  # 组织者的ID
     description = models.CharField(max_length=256)
-    maxNum = models.IntegerField(null = True, blank = True)  # 签到人数最大
-    creatorConfirm = models.IntegerField() # 定义签到后组织者确认方式：0不需要确认，1点击确认，2扫码确认
+    maxNum = models.IntegerField(null=True, blank=True)  # 签到人数最大
+    creatorConfirm = models.IntegerField()  # 定义签到后组织者确认方式：0不需要确认，1点击确认，2扫码确认
     captcha = models.BooleanField()  # 确认签到的时候是否需要验证码
     status = models.CharField(max_length=30, null=True)  # draft 未发布可修改 active 可以签到 pause 已发布不可签到不可修改 delete删除
 
@@ -109,7 +110,7 @@ class CheckIn (models.Model):
             return result
         except Exception:
             return None
- 
+
     def createNew(self):
         existing = CheckIn.objects.filter(description=self.description, o_ID=self.o_ID).count()
         if existing != 0:
@@ -143,7 +144,7 @@ class CheckIn (models.Model):
         return qs
 
 
-class Item (models.Model):
+class Item(models.Model):
     # 保存一个签到项目下具体的签到内容要求
     ID = models.AutoField(primary_key=True)
     o_ID = models.IntegerField()  # 组织者的ID
@@ -152,8 +153,9 @@ class Item (models.Model):
     description = models.CharField(max_length=256)
     type = models.IntegerField()  # 类型：0字符串，1数字，2邮件，3日期，4选项
     order = models.IntegerField()  # 同一个checkIn项目内显示排序
+    createTime = models.DateTimeField(auto_now_add=True, null=True)  # 创建时间，用于排序
     unique = models.BooleanField(default=False)
-    reservedFlag = models.BooleanField(default=False)   # 是否预制签到验证信息
+    reservedFlag = models.BooleanField(default=False)  # 是否预制签到验证信息
     reservedContent = models.TextField(null=True, blank=True)
     itemSelection = models.TextField(null=True, blank=True)  # 选项内容
 
@@ -161,24 +163,34 @@ class Item (models.Model):
         return self.c_description + self.description
 
     def createNew(self):
-        itemCount = Item.objects.filter(o_ID=self.o_ID, c_ID=self.c_ID).count()
-        Item.objects.create(o_ID=self.o_ID, c_ID=self.c_ID, c_description=self.c_description, description=self.description,
-                             type=self.type, unique=self.unique, reservedFlag=self.reservedFlag, reservedContent=self.reservedContent, itemSelection=self.itemSelection, order=itemCount+1,)
+        existing_items = Item.objects.filter(o_ID=self.o_ID, c_ID=self.c_ID).order_by('-order')
+        if len(existing_items) == 0:
+            item_count = 0
+        else:
+            item_count = existing_items[0].order
+        Item.objects.create(o_ID=self.o_ID, c_ID=self.c_ID, c_description=self.c_description,
+                            description=self.description,
+                            type=self.type, unique=self.unique, reservedFlag=self.reservedFlag,
+                            reservedContent=self.reservedContent, itemSelection=self.itemSelection,
+                            order=item_count + 1, )
 
     def sameItem(self):
         # 检查是否有同样的内容
-        result = Item.objects.filter(o_ID=self.o_ID, c_description=self.c_description, description=self.description,).count()
+        result = Item.objects.filter(o_ID=self.o_ID, c_description=self.c_description,
+                                     description=self.description, ).count()
         if result == 0:
             return False
         else:
             return True
 
     def searchByC_ID(self):
-        result = Item.objects.filter(c_ID=self.c_ID).order_by('order').values()
+        result = Item.objects.filter(c_ID=self.c_ID).order_by('createTime').values()
         return result
 
     def updateItemByID(self):
-        Item.objects.filter(ID=self.ID).update(description=self.description, type=self.type, unique=self.unique, reservedFlag=self.reservedFlag, reservedContent=self.reservedContent, itemSelection=self.itemSelection)
+        Item.objects.filter(ID=self.ID).update(description=self.description, type=self.type, unique=self.unique,
+                                               reservedFlag=self.reservedFlag, reservedContent=self.reservedContent,
+                                               itemSelection=self.itemSelection)
 
     def searchByID(self):
         try:
@@ -193,7 +205,7 @@ class Item (models.Model):
             return True
         except:
             return False
-        
+
 
 # 定义数据收集后的存储
 class UserContent(models.Model):
@@ -204,16 +216,17 @@ class UserContent(models.Model):
     confirmation = models.IntegerField()  # 0不需要确认，10需要但是未确认, 11需要并且确认
     datetime = models.DateTimeField(auto_now_add=True)
     IPAddress = models.GenericIPAddressField(null=True)
-    
+
     def createNew(self):
-        UserContent.objects.create(c_ID=self.c_ID, o_ID=self.o_ID, content=self.content, confirmation=self.confirmation, IPAddress=self.IPAddress)
+        UserContent.objects.create(c_ID=self.c_ID, o_ID=self.o_ID, content=self.content, confirmation=self.confirmation,
+                                   IPAddress=self.IPAddress)
 
     def getContentList(self):
         result = UserContent.objects.filter(c_ID=self.c_ID).values('content')
         return result
 
     def searchByC_ID(self):
-        result = UserContent.objects.filter(c_ID=self.c_ID).exclude(confirmation = '10' )
+        result = UserContent.objects.filter(c_ID=self.c_ID).exclude(confirmation='10')
         return result
 
     def existingInContent(self):
@@ -223,7 +236,7 @@ class UserContent(models.Model):
     def getContentQty(self):
         result = UserContent.objects.filter(c_ID=self.c_ID).count()
         return result
-    
+
     def uniqueCheck(self):
         resultQty = UserContent.objects.filter(content__contains=self.content).count()
         if resultQty == 0:
@@ -236,4 +249,4 @@ class UserContent(models.Model):
             UserContent.objects.filter(c_ID=self.c_ID).delete()
             return True
         except:
-            return False
+            return False

checkIn/static/JS/newItems.js

@@ -1,10 +1,10 @@
 function reservedChange(){
     if($("#reservedCheck").prop("checked")==true){
-        console.log('checked');
+//        console.log('checked');
         $("#reservedArea").prop("hidden",false);
     }
     else{
-        console.log('Not checked');
+//        console.log('Not checked');
         $("#reservedArea").prop("hidden",true);
     }
 }
@@ -15,16 +15,19 @@ function selectionShow() {
             $("#itemSelection").prop("hidden", true);
             $("#onlyDIV").prop("hidden", false);
             $("#reservedDIV").prop("hidden", false);
+            $("#selectOptions").text("")
             break;
         case "1":  // 数字
             $("#itemSelection").prop("hidden", true);
             $("#onlyDIV").prop("hidden", false);
             $("#reservedDIV").prop("hidden", false);
+            $("#selectOptions").text("")
             break;
         case "2":  // 邮件
             $("#itemSelection").prop("hidden", true);
             $("#onlyDIV").prop("hidden", false);
             $("#reservedDIV").prop("hidden", false);
+            $("#selectOptions").text("")
             break;
         case "3":  // 日期
             $("#itemSelection").prop("hidden", true);
@@ -33,14 +36,24 @@ function selectionShow() {
             $("#reservedCheck").prop("checked", false);
             $("#reservedDIV").prop("hidden", true);
             $("#reservedArea").prop("hidden", true);
+            $("#selectOptions").text("")
             break;
-        case "4":  // 选择
+        case "4":  // 单项选择
             $("#itemSelection").prop("hidden", false);
             $("#onlyCheck").prop("checked", false);  //确保only check不被勾选
             $("#onlyDIV").prop("hidden", true);  // 将only check隐藏
             $("#reservedCheck").prop("checked", false);
             $("#reservedDIV").prop("hidden", true);
             $("#reservedArea").prop("hidden", true);
+        case "5":  // 多项选择
+            $("#itemSelection").prop("hidden", false);
+//            隐藏唯一选择功能
+            $("#onlyCheck").prop("checked", false);
+            $("#onlyDIV").prop("hidden", true);
+//            隐藏预设区域和功能
+            $("#reservedCheck").prop("checked", false);
+            $("#reservedDIV").prop("hidden", true);
+            $("#reservedArea").prop("hidden", true);
             break;
         default:
             reservedChange();

checkIn/staticViews.py

@@ -6,4 +6,4 @@ from django.views.decorators.cache import cache_page
 @cache_page(60 * 60)  # 缓存有效时间1小时
 def staticURLs(request, url):
     if url == 'howto':
-        return render(request, 'checkIn/static/howto.html')
+        return render(request, 'checkIn/static/howto.html')

checkIn/templates/checkIn/itemUpdate.html

@@ -20,12 +20,13 @@
                     <option value="1" {% if item.type == 1 %} selected="selected" {% endif %}>数字</option>
                     <option value="2" {% if item.type == 2 %} selected="selected" {% endif %}>邮件</option>
                     <option value="3" {% if item.type == 3 %} selected="selected" {% endif %}>日期</option>
-                    <option value="4" {% if item.type == 4 %} selected="selected" {% endif %}>选择</option>
+                    <option value="4" {% if item.type == 4 %} selected="selected" {% endif %}>单项选择</option>
+                    <option value="5" {% if item.type == 5 %} selected="selected" {% endif %}>多项选择</option>
                     </select>
         </div>
         <div id="itemSelection" name="itemSeletion" hidden="hidden" class="form-group">
             <label>输入所有的选项，每个选项一行<br /></label>
-            <textarea name="itemSelection" rows="10" cols="50" class="form-control">{{item.itemSelection}}</textarea>
+            <textarea id="selectOptions" name="itemSelection" rows="10" cols="50" class="form-control">{{item.itemSelection}}</textarea>
         </div>
         <div id="onlyDIV" class="form-group">
             <label>是否要求唯一？</label>

checkIn/templates/checkIn/newItems.html

@@ -22,12 +22,13 @@
                     <option value="1" {% if item.type == 1 %} selected="selected" {% endif %}>数字</option>
                     <option value="2" {% if item.type == 2 %} selected="selected" {% endif %}>邮件</option>
                     <option value="3" {% if item.type == 3 %} selected="selected" {% endif %}>日期</option>
-                    <option value="4" {% if item.type == 4 %} selected="selected" {% endif %}>选择</option>
+                    <option value="4" {% if item.type == 4 %} selected="selected" {% endif %}>单项选择</option>
+                    <option value="5" {% if item.type == 5 %} selected="selected" {% endif %}>多项选择</option>
                     </select>
         </div>
         <div id="itemSelection" name="itemSeletion" hidden="hidden" class="form-group">
             <label>输入所有的选项，每个选项一行<br /></label>
-            <textarea name="itemSelection" rows="10" cols="50" class="form-control">{{item.itemSelection}}</textarea>
+            <textarea id="selectOptions" name="itemSelection" rows="10" cols="50" class="form-control">{{item.itemSelection}}</textarea>
         </div>
         <div id="onlyDIV" class="form-group">
             <label>是否要求唯一？</label>
@@ -54,7 +55,15 @@
             {% for item in existItemList %}
             <tr>
                 <td style="width:70%; text-align:left">{{item.description}}</td>
-                <td style="width:70%;">{% if item.type == 0 %}文本{% elif item.type == 1 %}数字{% elif item.type == 2 %}邮件{% elif item.type == 3 %}日期{% elif item.type == 4 %}选择{% endif %}</td>
+                <td style="width:70%;">
+                    {% if item.type == 0 %}文本
+                    {% elif item.type == 1 %}数字
+                    {% elif item.type == 2 %}邮件
+                    {% elif item.type == 3 %}日期
+                    {% elif item.type == 4 %}单项选择
+                    {% elif item.type == 5 %}多项选择
+                    {% endif %}
+                </td>
                 <td style="width:10%"><input class="btn btn-default" type="button" style="background:transparent" value="修改" onclick="window.location.href='/checkIn/itemUpdate/?ID={{item.ID}}'" /></td>
                 <td style="width:10%"><input class="btn btn-default" type="button" style="background:transparent" value="删除" onclick="delItem('{{item.description}}',{{item.ID}})" /></td>
             </tr>

checkIn/templates/checkIn/user/checkIn.html

@@ -38,6 +38,11 @@
                             {% endfor %}
                         </select>
                         {% endif %}
+                        {% if item.type == 5 %}
+                        {% for option in item.option %}
+                        <input type="checkbox" name="{{item.description}}" value="{{option}}">{{option}}</input>
+                        {% endfor %}
+                        {% endif %}
                     </td>
                 </tr>
                 {% endfor %}

checkIn/userViews.py

@@ -35,7 +35,8 @@ def userURL(request, url):
                 # 从item获取签到key
                 key = x['description']
                 # 从POST中取值
-                value = request.POST[key].strip()
+                # value = request.POST[key].strip()
+                value = request.POST.getlist(key)
                 # 如果item要求唯一性，去user content里面搜索是否有同样的数据
                 if x['unique']:
                     itemUnique = UserContent
@@ -53,7 +54,7 @@ def userURL(request, url):
                         return render(request, 'checkIn/user/error.html', {'title': '你不在活动名单中', 'content': '你不在活动名单中。'})
 
                 # 如果通过验证就把数据Dict保留在Session里面
-                values[key] = value
+                values[key] = ','.join(value)
             request.session['UcheckInContent'] = values
             if checkIn.creatorConfirm:
                 request.session['Uconfirmation'] = 10  # Session里面先保存一个需要确认，但是未确认的状态
@@ -63,7 +64,7 @@ def userURL(request, url):
 
 
         # GET开启，不是POST
-        else:
+        if request.method == 'GET':
             # reset签到session
             if checkSession(request, 'Uc_ID'):
                 del request.session['Uc_ID']
@@ -119,14 +120,15 @@ def userURL(request, url):
             # 遍历item里面的选项
             x = 0
             for i in items:
-                if i['type'] == 4:
+                if i['type'] == 4 or 5: # 如果是列表需要将文字转换为选项
                     option = re.split('\r\n|\n|\r', i['itemSelection'])
                     items[x]['option'] = option
                     #selection[i['ID']] = option
                 x += 1
             # 渲染签到页面
             try:
-                return render(request, 'checkIn/user/checkIn.html', {'checkIn':checkIn, 'items': items, 'captcha': myCaptcha})
+                return render(request, 'checkIn/user/checkIn.html',
+                              {'checkIn': checkIn, 'items': items, 'captcha': myCaptcha})
             except Exception as e:
                 return render(request, 'checkIn/user/error.html', {'title': '参数错误', 'content': e})
     

checkIn/views.py

@@ -1,7 +1,4 @@
-from django.shortcuts import render
-from django.http import HttpResponse, HttpResponseRedirect
 from django.contrib.auth.hashers import make_password, check_password
-from django.views.decorators.cache import cache_page
 from .forms import RegForm, CheckInForm, ForgetPSWForm
 from .models import Organizer, CheckIn, Item, UserContent
 from .functions import *
@@ -212,7 +209,7 @@ def checkIn(request, url):
             else:
                 item.reservedFlag = False
                 item.reservedContent = ''
-            if item.type == '4':  # 如果是选项需要在选项数据库里面输入
+            if item.type == '4' or '5':  # 如果是单选选项需要在选项数据库里面输入
                 item.itemSelection = request.POST['itemSelection'].strip()
             #验证完成，创建item
             Item.createNew(item)
@@ -253,6 +250,7 @@ def checkIn(request, url):
             item = Item.searchByID(item)
             item.description = request.POST['description'].strip()
             item.type = request.POST['type']
+            item.itemSelection = request.POST['itemSelection']
             if checkPOST(request, 'uniqueItem'):
                 item.unique = True
             else:
@@ -267,7 +265,7 @@ def checkIn(request, url):
             Item.updateItemByID(item)
             return HttpResponseRedirect('/checkIn/newItems/?ID=%s' % (item.c_ID))
         # 非POST
-        else:
+        if request.method == 'GET':
             try:
                 if not checkGET(request, 'ID'):
                     return render(request, 'checkIn/directPage.html', {'alertMsg': '没有输入ID或者ID错误', 'dirLink': '/'})
@@ -383,15 +381,16 @@ def checkIn(request, url):
             return render(request, 'checkIn/directPage.html', {'alertMsg': '没有输入ID或者ID错误', 'dirLink': '/'})
         checkIn.ID = request.GET['c_ID']
         checkIn = CheckIn.searchByID(checkIn)
-        if checkIn == None:
+        if checkIn is None:
             return render(request, 'checkIn/directPage.html', {'alertMsg': '没有输入ID或者ID错误', 'dirLink': '/'})
 
         # 验证checkIn 用户和登录用户是否一致。
-        if (not checkCorrectO_ID(request, checkIn.o_ID)) or checkIn == None:
+        if (not checkCorrectO_ID(request, checkIn.o_ID)) or checkIn is None:
             return render(request, 'checkIn/directPage.html', {'alertMsg': 'c_ID有错误，请重新登录。', 'dirLink': '/checkIn/logout'})
 
         # 获取数据,生成response
-        response = HttpResponse(content_type='text/csv')
+        response = HttpResponse(content_type='text/csv;charset=ANSI')
+
         response['Content-Disposition'] = 'attachment; filename="checkIn_%s.csv"' % (checkIn.ID)
         import csv
         writer = csv.writer(response)
@@ -400,7 +399,7 @@ def checkIn(request, url):
         # result = mongoSearchByID(checkIn.ID)
         keys = eval(result[0]['content']).keys()
         writer.writerow(keys)
-        result2 = []
+        # result2 = []
         for x in result:
             writer.writerow(eval(x['content']).values())
         return response

common_commands.txt

@@ -0,0 +1,2 @@
+venv\Scripts\python.exe manage.py makemigrations
+venv\Scripts\python.exe manage.py migrate

dati/data.py

@@ -0,0 +1,13 @@
+form_department_choice = [('露香居民区党总支', '露香居民区党总支'), ('党建服务中心党总支', '党建服务中心党总支'), ('肇方居民区党总支', '肇方居民区党总支'),
+                          ('会稽居民区党总支', '会稽居民区党总支'), ('方西居民区党总支', '方西居民区党总支'), ('同庆居民区党总支', '同庆居民区党总支'),
+                          ('广福居民区党总支', '广福居民区党总支'), ('四新居民区党总支', '四新居民区党总支'), ('太都居民区党总支', '太都居民区党总支'),
+                          ('泰瑞居民区党总支', '泰瑞居民区党总支'), ('侯家居民区党总支', '侯家居民区党总支'), ('宝带居民区党总支', '宝带居民区党总支'),
+                          ('机关第一党支部', '机关第一党支部'), ('社区事务受理服务中心党支部', '社区事务受理服务中心党支部'), ('绿化和市容管理所党支部', '绿化和市容管理所党支部'),
+                          ('学院居民区党总支', '学院居民区党总支'), ('果育居民区党总支', '果育居民区党总支'), ('光启居民区党总支', '光启居民区党总支'),
+                          ('机关第二党支部', '机关第二党支部'), ('豫园街道城管中队党支部', '豫园街道城管中队党支部'), ('淮海居民区党总支', '淮海居民区党总支'),
+                          ('古城居民区党总支', '古城居民区党总支'), ('丹马居民区党总支', '丹马居民区党总支'),
+                          ('住房保障和房屋管理局豫园办事处党支部', '住房保障和房屋管理局豫园办事处党支部'), ('城市网格化综合管理中心党支部', '城市网格化综合管理中心党支部'),
+                          ('机关第三党支部', '机关第三党支部'), ('两新城隍庙片区', '两新城隍庙片区'), ('两新流动片区', '两新流动片区'),
+                          ('两新小商品市场片区', '两新小商品市场片区'), ('两新太都片区', '两新太都片区'), ('两新三牌楼片区', '两新三牌楼片区'),
+                          ('两新桃源片区', '两新桃源片区'), ('社会组织联合会党支部', '社会组织联合会党支部'),
+                          ]

dati/forms.py

@@ -1,9 +1,15 @@
 from django import forms
+from dati.data import form_department_choice
+
 
 class loginForm(forms.Form):
      username = forms.CharField(max_length=14, min_length=1, required=True, label='姓名',
                                 error_messages={'required': '请输入你的姓名。'},
                                 widget=forms.TextInput(attrs={'style': 'width:100%'}))
-     mobile = forms.IntegerField(required=True, label='联系电话',
-                                 error_messages={'required': '请输入你的联系电话。'},
+     mobile = forms.IntegerField(required=True, label='电话', max_value=19999999999, min_value=13000000000,
                                  widget=forms.NumberInput(attrs={'style': 'width:100%'}))
+     department = forms.ChoiceField(choices=form_department_choice,label='党支部',
+                                    widget=forms.Select(attrs={'style': 'width:100%'}))
+     address = forms.CharField(max_length=255, min_length=1, required=True, label='地址',
+                                error_messages={'required': '请输入你的地址。'},
+                               widget=forms.TextInput(attrs={'style': 'width:100%'}))

dati/migrations/0003_auto_20200905_1110.py

@@ -0,0 +1,26 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.5 on 2020-09-05 03:10
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('dati', '0002_answerrecord'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='answerrecord',
+            name='department',
+            field=models.CharField(default='豫园街道', max_length=128),
+            preserve_default=False,
+        ),
+        migrations.AlterField(
+            model_name='answerrecord',
+            name='mobile',
+            field=models.IntegerField(null=True),
+        ),
+    ]

dati/migrations/0004_auto_20200905_1412.py

@@ -0,0 +1,31 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.5 on 2020-09-05 06:12
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('dati', '0003_auto_20200905_1110'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Scores',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('user', models.CharField(max_length=128)),
+                ('mobile', models.IntegerField()),
+                ('department', models.CharField(max_length=128)),
+                ('score', models.DecimalField(decimal_places=2, max_digits=3)),
+                ('time', models.DateTimeField(auto_now=True)),
+            ],
+        ),
+        migrations.AlterField(
+            model_name='answerrecord',
+            name='mobile',
+            field=models.IntegerField(),
+        ),
+    ]

dati/migrations/0005_auto_20200905_1600.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.5 on 2020-09-05 08:00
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('dati', '0004_auto_20200905_1412'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='scores',
+            name='score',
+            field=models.FloatField(),
+        ),
+    ]

dati/migrations/0006_auto_20200909_1457.py

@@ -0,0 +1,27 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.5 on 2020-09-09 06:57
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.utils.timezone
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('dati', '0005_auto_20200905_1600'),
+    ]
+
+    operations = [
+        migrations.RenameField(
+            model_name='scores',
+            old_name='time',
+            new_name='start_time',
+        ),
+        migrations.AddField(
+            model_name='scores',
+            name='total_time',
+            field=models.IntegerField(),
+            preserve_default=False,
+        ),
+    ]

dati/migrations/0007_scores_address.py

@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.5 on 2020-09-09 08:54
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('dati', '0006_auto_20200909_1457'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='scores',
+            name='address',
+            field=models.CharField(default='TBD', max_length=255),
+            preserve_default=False,
+        ),
+    ]

dati/models.py

@@ -1,7 +1,8 @@
 from django.db import models
 
+
 # Create your models here.
-class Question (models.Model):
+class Question(models.Model):
     ID = models.AutoField(primary_key=True)
     q = models.CharField(max_length=128)
     a1 = models.CharField(max_length=128)
@@ -10,23 +11,53 @@ class Question (models.Model):
     a4 = models.CharField(max_length=128)
     answer = models.IntegerField()
 
+    @staticmethod
     def get_random_question():
-       return Question.objects.order_by('?')[:1]
+        return Question.objects.order_by('?')[:1]
 
     def search_id(self):
         return Question.objects.filter(ID=self.ID)
 
-class AnswerRecord (models.Model):
+
+class AnswerRecord(models.Model):
     user = models.CharField(max_length=128)
     mobile = models.IntegerField()
+    department = models.CharField(max_length=128)
     question = models.CharField(max_length=128)
     result = models.CharField(max_length=8)
     your_answer = models.CharField(max_length=128)
     correct_answer = models.CharField(max_length=128, null=True)
 
     def add_record(self):
-        AnswerRecord.objects.create(user=self.user, mobile=self.mobile, question=self.question, result=self.result,
+        AnswerRecord.objects.create(user=self.user, mobile=self.mobile, department=self.department,
+                                    question=self.question, result=self.result,
                                     your_answer=self.your_answer, correct_answer=self.correct_answer)
 
     def get_record(self):
-        return AnswerRecord.objects.filter(user=self.user, mobile=self.mobile)
+        return AnswerRecord.objects.filter(user=self.user, mobile=self.mobile)
+
+
+class Scores(models.Model):
+    user = models.CharField(max_length=128)
+    mobile = models.IntegerField()
+    department = models.CharField(max_length=128)
+    score = models.FloatField()
+    start_time = models.DateTimeField(auto_now=True)
+    total_time = models.IntegerField()
+    address = models.CharField(max_length=255)
+
+    def add_score(self):
+        Scores.objects.create(user=self.user, mobile=self.mobile, department=self.department, score=self.score,
+                              total_time=self.total_time, address=self.address)
+
+    @staticmethod
+    def find_score(mobile_number):
+        result = Scores.objects.filter(mobile=mobile_number)
+        if len(result) == 0:
+            return False
+        else:
+            return True
+
+    @staticmethod
+    def get_score_list():
+        return Scores.objects.all().order_by('total_time').order_by('-score')[0:10]

dati/templates/dati/bottom.html

@@ -1,5 +1,5 @@
 {% load staticfiles %}
-<div id="bottom" class="container" style="text-align:center">
-    <a href="/cq/dati">返回首页</a> &nbsp;
+<!-- <div id="bottom" class="container"style="text-align:center;margin-bottom: 1em;position:absolute; width:100%;color:white;">
     沪ICP备17040079号-3
-</div>
+</div> -->
+<div id="bottom" class="container" style="color: white; margin-top: 0px; position:relative; text-align: center;">沪ICP备17040079号-3</div>

dati/templates/dati/dati.html

@@ -4,51 +4,102 @@
 {% block script %}
 <script>
     function check_answer(){
-    correct_answer = {{question.answer}};
-    for(i=0;i<dati.answer.length;i++){
-        if (dati.answer[i].checked){
-            your_answer = i+1;
+        correct_answer = {{question.answer}};
+        for(i=0;i<dati.answer.length;i++){
+            if (dati.answer[i].checked){
+                your_answer = i+1;
+            }
         }
-    }
-    if (your_answer == correct_answer ){
-        alert("恭喜你答对了！");
-    }
-    else{
-        switch (correct_answer){
-            case 1:
-            alert("很遗憾，你答错了！"+"正确答案是："+"{{question.a1}}");
-            break;
-            case 2:
-            alert("很遗憾，你答错了！"+"正确答案是："+"{{question.a2}}");
-            break;
-            case 3:
-            alert("很遗憾，你答错了！"+"正确答案是："+"{{question.a3}}");
-            break;
-            case 4:
-            alert("很遗憾，你答错了！"+"正确答案是："+"{{question.a4}}");
-            break;
+        if (your_answer == correct_answer ){
+            alert("恭喜你答对了！");
         }
+        else{
+            switch (correct_answer){
+                case 1:
+                alert("很遗憾，你答错了！\n"+"正确答案是："+"{{question.a1}}");
+                break;
+                case 2:
+                alert("很遗憾，你答错了！\n"+"正确答案是："+"{{question.a2}}");
+                break;
+                case 3:
+                alert("很遗憾，你答错了！\n"+"正确答案是："+"{{question.a3}}");
+                break;
+                case 4:
+                alert("很遗憾，你答错了！\n"+"正确答案是："+"{{question.a4}}");
+                break;
+            }
+        }
+        // submit.disabled="true";
+        //window.location.reload();
     }
-    //window.location.reload();
-}
 </script>
 
 {% endblock %}
 
 {%block body %}
-<br><br><br><br><br><br><br><br><br><br><br><br>
-<div class="container">
-    <form id="dati" method="POST">
-        {% csrf_token %}
-        <h3>{{question.q}}</h3><br>
-        <input type="radio" name="answer" value=1>{{question.a1}}</input><br>
-        <input type="radio" name="answer" value=2>{{question.a2}}</input><br>
-        <input type="radio" name="answer" value=3>{{question.a3}}</input><br>
-        <input type="radio" name="answer" value=4>{{question.a4}}</input><br>
-        <br>
-        <input type="submit"  value="提交" onclick="check_answer()"><br><br>
-        <p style="text-align:right"><a href="/cq/dati">返回上一页</a></p>
+<div style="margin: 0%;">
+    <img src="https://echo3991-1251363834.cos.ap-shanghai.myqcloud.com/pujianghui/dati_a.jpg" style="width: 100%;">
+</div>
+<!-- 这一块尝试用Vue加载测试开始时间 -->
+<!-- <div id="timer" style="color:white; text-align:center">
+    <p>
+        {% verbatim %}
+        <p>已经用时{{remained_time}}秒</p>
+        {% endverbatim %}
+    </p>
+</div>
+<script>
+    // Vue.config.delimiters = ["[[", "]]"];
+    var vm = new Vue({
+        el:"#timer",
+        data:{
+            start_time:"{{start_time}}",
+            remained_time:0
+        },
+        created:function(){
+            this.count_down();
+        },
+        methods:{
+            count_down: function(){
+                setInterval(()=>{
+                    var s_time = new Date("{{start_time}}");
+                    var e_time = new Date();
+                    this.remained_time=parseInt((e_time-s_time)/1000);
+                    if (this.remained_time > 120){
+                        alert("答题时间结束");
+                    }
+                },1000);  
+            },
+        }
+    })
+</script> -->
+<div class="container" style="margin:0%;padding: 0%;background-color: #A0060A; color: white;height:auto;">
+    <div style="margin: 1em;">
+        <form id="dati" method="POST">
+            {% csrf_token %}
+            <h3>{{question.q}}</h3><br>
+            <div style="font-size: larger;"><input type="radio" name="answer" value=1 id="a1" onclick="check_answer_selected()"></input><label for="a1" onclick="check_answer_selected()">{{question.a1}}</label></div>
+            <div style="font-size: larger;"><input type="radio" name="answer" value=2 id="a2" onclick="check_answer_selected()"></input><label for="a2" onclick="check_answer_selected()">{{question.a2}}</label></div>
+            <div style="font-size: larger;"><input type="radio" name="answer" value=3 id="a3" onclick="check_answer_selected()"></input><label for="a3" onclick="check_answer_selected()">{{question.a3}}</label></div>
+            <div style="font-size: larger;"><input type="radio" name="answer" value=4 id="a4" onclick="check_answer_selected()"></input><label for="a4" onclick="check_answer_selected()">{{question.a4}}</label></div>
+            <div style="margin-top:2em;text-align: center;"><input type="submit" disabled=true id="submit" value="提交" onclick="check_answer()" class="btn btn-danger btn-lg" ></div>
+        </form>
+    </div>
+    
 </div>
+<!-- <div style="color: white; margin-top: -30px; position:relative; text-align: center;">沪ICP备17040079号-3</div> -->
 <!-- <br><a href="/cq/dati/history">查询我的答题记录</a> -->
-<br><br><br><br><br><br><br><br><br><br><br><br><br><br>
+
+
+<script>
+    function check_answer_selected(){
+        if (a1.checked || a2.checked || a3.checked ||a4.checked){
+            submit.disabled = false;
+        }else{
+            submit.disabled = true;
+        }
+        console.log("used"+{{question.answer}}*3.14+"seconds to click")
+    }
+
+</script>
 {% endblock %}

dati/templates/dati/directPage.html

@@ -9,7 +9,9 @@
 <body>
     {% if alertMsg != None %}
         <script type="text/javascript">
+            {% autoescape off %}
             alert ('{{alertMsg}}');
+            {% endautoescape %}
         </script>
     {% endif %}
     {% if dirLink %}

dati/templates/dati/index.html

@@ -1,4 +1,4 @@
-{% extends "dati/layout1.html" %}
+{% extends "dati/layout.html" %}
 {% load staticfiles %}
 
 {% block script %}
@@ -6,18 +6,27 @@
 {% endblock %}
 
 {%block body %}
-<div class="container">
-    <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>
-
-    <form name="login" method="post" class="form-inline"  align="center">
-        <table class="table table-hover">
-            {% csrf_token %}
-            {{form}}
-        </table>
-        <input type="submit" value="参与答题" class="btn btn-danger"/>
-    </form>
-    <br>
+<div style="margin: 0%;">
+    <img src="https://echo3991-1251363834.cos.ap-shanghai.myqcloud.com/pujianghui/dati_a.jpg" style="width: 100%;">
+</div>
+<div class="container" style="margin-bottom:0px;padding: 0%; background-color: #A0060A;">
+    <div style="margin-bottom: 1em;">
+      <form name="login" method="post" class="form-inline"  align="center">
+            <table class="table table-hover">
+                {% csrf_token %}
+                {{form}}
+            </table>
+            <input type="submit" value="参与答题" class="btn btn-danger btn-lg"/>
+        </form>
+    </div>
+    <div style="text-align: center;">
+        <a href="/cq/dati/ranking" style="color: white;" >排行榜</a>
+    </div>
 </div>
-<br><br><br><br><br><br><br><br><br><br><br><br><br><br>
+<div style="margin: 0%; margin-bottom: -1em; margin-top: auto; position: relative;">
+    <img src="https://echo3991-1251363834.cos.ap-shanghai.myqcloud.com/pujianghui/dati_b.jpg" style="width: 100%;">
+</div>
+<!-- <div style="color: white; margin-top: -30px; position:relative; text-align: center;">沪ICP备17040079号-3</div> -->
+
 {% endblock %}
 

dati/templates/dati/layout.html

@@ -9,9 +9,12 @@
         <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" />
         <script src="https://cdn.bootcss.com/jquery/3.2.1/jquery.min.js"></script>
         <script src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
+        <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
         {% block script %}{% endblock %}
     </head>
-    <body background="{% static 'dati/dati_2.jpg' %}" style="background-size:100%; background-repeat:no-repeat">
+    {% load static %}
+    <!-- <body background="https://echo3991-1251363834.cos.ap-shanghai.myqcloud.com/pujianghui/dati_2.jpg" style="background-size:100%; background-repeat:no-repeat;"   > -->
+    <body style="background-color: #A0060A; position: relative;">
         {% block body %}{% endblock %}
         {% include 'dati/bottom.html' %}
     </body>

dati/templates/dati/layout1.html

@@ -9,9 +9,12 @@
         <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" />
         <script src="https://cdn.bootcss.com/jquery/3.2.1/jquery.min.js"></script>
         <script src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
+        <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
         {% block script %}{% endblock %}
     </head>
-    <body background="{% static 'dati/dati_1.jpg' %}" style="background-size:100%; background-repeat:no-repeat">
+    {% load static %}
+    <!-- <body background="https://echo3991-1251363834.cos.ap-shanghai.myqcloud.com/pujianghui/dati_1.png" style="background-size:100%; background-repeat:no-repeat"> -->
+    <body>
         {% block body %}{% endblock %}
         {% include 'dati/bottom.html' %}
     </body>

dati/templates/dati/ranking.html

@@ -0,0 +1,30 @@
+{% extends "dati/layout.html" %}
+{% load staticfiles %}
+
+{% block script %}
+
+{% endblock %}
+
+{%block body %}
+<div style="margin: 0%;">
+    <img src="https://echo3991-1251363834.cos.ap-shanghai.myqcloud.com/pujianghui/dati_a.jpg" style="width: 100%;">
+</div>
+<div class="container" style="margin-top: 0%; margin-bottom: 4em ;color: white;background-color: #A0060A">
+    <table class="table">
+
+        <tr>
+            <th>姓名</th><th>得分</th><th>总用时（秒）</th>
+        </tr>
+        {% for item in ranking_list %}
+        <tr>
+            <td>{{item.user}}</td>
+            <td>{{item.score|floatformat:"0"}}</td>
+            <td>{{item.total_time}}</td>
+        </tr>
+        {% endfor %}
+    </table>
+    <div style="text-align: center;"><a href="/cq/dati/" style=" color: white;">返回</a></div>
+</div>
+
+<!-- <div style="color: white; margin-top: -30px; position:relative; text-align: center;">沪ICP备17040079号-3</div> -->
+{% endblock %}

dati/urls.py

@@ -1,8 +1,10 @@
 from django.conf.urls import url
-from dati.views import index, dati, history
+from dati.views import index, dati, history, ranking, ranking_json
 
 urlpatterns = [
     url(r'^$', index),
     url(r'^dati/$', dati),
     url(r'^history/$', history),
+    url(r'^ranking/$', ranking),
+    url(r'^ranking_json/$', ranking_json),
     ]

dati/views.py

@@ -1,7 +1,11 @@
 from django.shortcuts import render
-from django.http import HttpResponse, HttpResponseRedirect
+from django.http import HttpResponse, HttpResponseRedirect, JsonResponse
+from django.core import serializers
 from .forms import loginForm
-from .models import Question, AnswerRecord
+from .models import Question, AnswerRecord, Scores
+from datetime import datetime, timedelta
+import json
+
 
 # Create your views here.
 
@@ -13,16 +17,42 @@ def index(request):
         if lForm.is_valid():
             request.session['username'] = lForm.cleaned_data['username'].strip()
             request.session['mobile'] = lForm.cleaned_data['mobile']
-            return HttpResponseRedirect('/cq/dati/dati')
+            request.session['department'] = lForm.cleaned_data['department']
+            request.session['address'] = lForm.cleaned_data['address']
+            user_score = Scores()
+            if user_score.find_score(mobile_number=request.session['mobile']):
+                return render(request, 'dati/directPage.html', {'alertMsg': '您已经答过题了。', 'dirLink': '/cq/dati'})
+            else:
+                request.session['time'] = 0  # 答题次数
+                request.session['correct'] = 0
+                question_list = []
+                request.session['used_question_list'] = question_list
+                request.session['start_time'] = str(datetime.now())
+                return HttpResponseRedirect('/cq/dati/dati')
     else:
-        request.session['time']=0
-        request.session['correct']=0
         return render(request, 'dati/index.html', {'form': loginForm})
 
 
 def dati(request):
     # dati page
     quest = Question
+    if request.session.get('mobile') is None:
+        message = '请输入手机号码和姓名开始答题'
+        return render(request, 'dati/directPage.html', {'alertMsg': message, 'dirLink': '/cq/dati'})
+    start_time = datetime.strptime(request.session['start_time'][0:19], '%Y-%m-%d %H:%M:%S')
+    time_delta_since_last = (datetime.now()-start_time).total_seconds()
+    if time_delta_since_last > 120:
+        user_score = Scores()
+        user_score.user = request.session['username']
+        user_score.mobile = request.session['mobile']
+        user_score.department = request.session['department']
+        user_score.score = request.session['correct']
+        user_score.address = request.session['address']
+        user_score.total_time = 1000
+        user_score.add_score()
+        message = '你已经用完了2分钟答题时间。本次答题，你答对了' + str(request.session['correct']) + '题。'
+        del request.session['mobile']
+        return render(request, 'dati/directPage.html', {'alertMsg': message, 'dirLink': '/cq/dati'})
     if request.method == 'POST':
         request.session['time'] = request.session['time'] + 1
         quest.ID = request.session['question_id']
@@ -31,43 +61,62 @@ def dati(request):
         answerRecord = AnswerRecord
         answerRecord.user = request.session['username']
         answerRecord.mobile = request.session['mobile']
+        answerRecord.department = request.session['department']
         answerRecord.question = quest[0].q
         if int(your_answer) == quest[0].answer:
-            answerRecord.result='正确'
-            request.session['correct']=request.session['correct']+1
+            answerRecord.result = '正确'
+            request.session['correct'] = request.session['correct'] + 1
         else:
-            answerRecord.result='错误'
+            answerRecord.result = '错误'
         # 用户的答案
-        if your_answer=='1':
-            answerRecord.your_answer=quest[0].a1
-        elif your_answer=='2':
-            answerRecord.your_answer=quest[0].a2
-        elif your_answer=='3':
-            answerRecord.your_answer=quest[0].a3
-        elif your_answer=='4':
-            answerRecord.your_answer=quest[0].a4
+        if your_answer == '1':
+            answerRecord.your_answer = quest[0].a1
+        elif your_answer == '2':
+            answerRecord.your_answer = quest[0].a2
+        elif your_answer == '3':
+            answerRecord.your_answer = quest[0].a3
+        elif your_answer == '4':
+            answerRecord.your_answer = quest[0].a4
         # 记录正确答案
         if quest[0].answer == 1:
-            answerRecord.correct_answer=quest[0].a1
+            answerRecord.correct_answer = quest[0].a1
         elif quest[0].answer == 2:
-            answerRecord.correct_answer=quest[0].a2
+            answerRecord.correct_answer = quest[0].a2
         elif quest[0].answer == 3:
-            answerRecord.correct_answer=quest[0].a3
+            answerRecord.correct_answer = quest[0].a3
         elif quest[0].answer == 4:
-            answerRecord.correct_answer=quest[0].a4
+            answerRecord.correct_answer = quest[0].a4
         AnswerRecord.add_record(answerRecord)
-        if request.session['time']==10:
-            message = '本次答题，你答对了'+str(request.session['correct'])+'题，继续努力哟！'
+        if request.session['time'] >= 10:
+            user_score = Scores()
+            user_score.user = request.session['username']
+            user_score.mobile = request.session['mobile']
+            user_score.department = request.session['department']
+            user_score.score = request.session['correct']
+            user_score.address = request.session['address']
+            user_score.total_time = time_delta_since_last
+            user_score.add_score()
+            message = '答题结束本次答题，你答对了'+str(request.session['correct'])+'题。共用时'+str(round(user_score.total_time))+'秒。'
+            del request.session['mobile']
             return render(request, 'dati/directPage.html', {'alertMsg': message, 'dirLink': '/cq/dati'})
-
-    quest = Question.get_random_question()[0]
-    request.session['question_id'] = quest.ID
-    try:
-        user = request.session['username']
-        mobile = request.session['mobile']
-    except:
-        return HttpResponseRedirect('/cq/dati')
-    return render(request, 'dati/dati.html', {'question': quest})
+        else:
+            if request.session['correct'] == 5:
+                message = '再接再厉，奖品离你越来越近了哦！'
+                return render(request, 'dati/directPage.html', {'alertMsg': message, 'dirLink': '/cq/dati/dati'})
+            else:
+                return HttpResponseRedirect('/cq/dati/dati')
+    if request.method == 'GET':
+        quest = Question.get_random_question()[0]
+        request.session['question_id'] = quest.ID
+        used_question_list = request.session['used_question_list']
+        while True:
+            if quest.ID in used_question_list:
+                quest = Question.get_random_question()[0]
+                request.session['question_id'] = quest.ID
+            else:
+                used_question_list.append(quest.ID)
+                break
+        return render(request, 'dati/dati.html', {'question': quest, 'start_time': str(start_time)})
 
 
 def history(request):
@@ -75,4 +124,18 @@ def history(request):
     ansRecord.user = request.session['username']
     ansRecord.mobile = request.session['mobile']
     ansRecord = AnswerRecord.get_record(ansRecord)
-    return render(request, 'dati/history.html', {'history': ansRecord})
+    return render(request, 'dati/history.html', {'history': ansRecord})
+
+
+def ranking(request):
+    ranking_list = Scores.get_score_list()
+    for r in ranking_list:
+        if r.total_time == 1000:
+            r.total_time = 120
+    return render(request, 'dati/ranking.html', context={'ranking_list': ranking_list, 'title': '排行榜'})
+
+
+def ranking_json(request):
+    ranking_list = Scores.get_score_list()
+    ranking_list_json = json.dumps(list(ranking_list.values('user', 'mobile', 'department', 'score')))
+    return JsonResponse(ranking_list_json, safe=False)

manage.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+ #!/usr/bin/env python
 """
 Command-line utility for administrative tasks.
 """

venv/Lib/site-packages/_distutils_hack/__init__.py

@@ -0,0 +1,123 @@
+import sys
+import os
+import re
+import importlib
+import warnings
+
+
+is_pypy = '__pypy__' in sys.builtin_module_names
+
+
+def warn_distutils_present():
+    if 'distutils' not in sys.modules:
+        return
+    if is_pypy and sys.version_info < (3, 7):
+        # PyPy for 3.6 unconditionally imports distutils, so bypass the warning
+        # https://foss.heptapod.net/pypy/pypy/-/blob/be829135bc0d758997b3566062999ee8b23872b4/lib-python/3/site.py#L250
+        return
+    warnings.warn(
+        "Distutils was imported before Setuptools, but importing Setuptools "
+        "also replaces the `distutils` module in `sys.modules`. This may lead "
+        "to undesirable behaviors or errors. To avoid these issues, avoid "
+        "using distutils directly, ensure that setuptools is installed in the "
+        "traditional way (e.g. not an editable install), and/or make sure "
+        "that setuptools is always imported before distutils.")
+
+
+def clear_distutils():
+    if 'distutils' not in sys.modules:
+        return
+    warnings.warn("Setuptools is replacing distutils.")
+    mods = [name for name in sys.modules if re.match(r'distutils\b', name)]
+    for name in mods:
+        del sys.modules[name]
+
+
+def enabled():
+    """
+    Allow selection of distutils by environment variable.
+    """
+    which = os.environ.get('SETUPTOOLS_USE_DISTUTILS', 'stdlib')
+    return which == 'local'
+
+
+def ensure_local_distutils():
+    clear_distutils()
+    distutils = importlib.import_module('setuptools._distutils')
+    distutils.__name__ = 'distutils'
+    sys.modules['distutils'] = distutils
+
+    # sanity check that submodules load as expected
+    core = importlib.import_module('distutils.core')
+    assert '_distutils' in core.__file__, core.__file__
+
+
+def do_override():
+    """
+    Ensure that the local copy of distutils is preferred over stdlib.
+
+    See https://github.com/pypa/setuptools/issues/417#issuecomment-392298401
+    for more motivation.
+    """
+    if enabled():
+        warn_distutils_present()
+        ensure_local_distutils()
+
+
+class DistutilsMetaFinder:
+    def find_spec(self, fullname, path, target=None):
+        if path is not None:
+            return
+
+        method_name = 'spec_for_{fullname}'.format(**locals())
+        method = getattr(self, method_name, lambda: None)
+        return method()
+
+    def spec_for_distutils(self):
+        import importlib.abc
+        import importlib.util
+
+        class DistutilsLoader(importlib.abc.Loader):
+
+            def create_module(self, spec):
+                return importlib.import_module('setuptools._distutils')
+
+            def exec_module(self, module):
+                pass
+
+        return importlib.util.spec_from_loader('distutils', DistutilsLoader())
+
+    def spec_for_pip(self):
+        """
+        Ensure stdlib distutils when running under pip.
+        See pypa/pip#8761 for rationale.
+        """
+        if self.pip_imported_during_build():
+            return
+        clear_distutils()
+        self.spec_for_distutils = lambda: None
+
+    @staticmethod
+    def pip_imported_during_build():
+        """
+        Detect if pip is being imported in a build script. Ref #2355.
+        """
+        import traceback
+        return any(
+            frame.f_globals['__file__'].endswith('setup.py')
+            for frame, line in traceback.walk_stack(None)
+        )
+
+
+DISTUTILS_FINDER = DistutilsMetaFinder()
+
+
+def add_shim():
+    sys.meta_path.insert(0, DISTUTILS_FINDER)
+
+
+def remove_shim():
+    try:
+        sys.meta_path.remove(DISTUTILS_FINDER)
+    except ValueError:
+        pass

venv/Lib/site-packages/_distutils_hack/override.py

@@ -0,0 +1 @@
+__import__('_distutils_hack').do_override()

venv/Lib/site-packages/distutils-precedence.pth

@@ -0,0 +1 @@
+import os; var = 'SETUPTOOLS_USE_DISTUTILS'; enabled = os.environ.get(var, 'stdlib') == 'local'; enabled and __import__('_distutils_hack').add_shim(); 

venv/Lib/site-packages/djangorestframework-3.11.1.dist-info/INSTALLER

@@ -0,0 +1 @@
+pip

venv/Lib/site-packages/djangorestframework-3.11.1.dist-info/LICENSE.md

@@ -0,0 +1,29 @@
+# License
+
+Copyright © 2011-present, [Encode OSS Ltd](https://www.encode.io/).
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+* Neither the name of the copyright holder nor the names of its
+  contributors may be used to endorse or promote products derived from
+  this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

venv/Lib/site-packages/djangorestframework-3.11.1.dist-info/METADATA

@@ -0,0 +1,262 @@
+Metadata-Version: 2.1
+Name: djangorestframework
+Version: 3.11.1
+Summary: Web APIs for Django, made easy.
+Home-page: https://www.django-rest-framework.org/
+Author: Tom Christie
+Author-email: tom@tomchristie.com
+License: BSD
+Project-URL: Funding, https://fund.django-rest-framework.org/topics/funding/
+Project-URL: Source, https://github.com/encode/django-rest-framework
+Platform: UNKNOWN
+Classifier: Development Status :: 5 - Production/Stable
+Classifier: Environment :: Web Environment
+Classifier: Framework :: Django
+Classifier: Framework :: Django :: 1.11
+Classifier: Framework :: Django :: 2.0
+Classifier: Framework :: Django :: 2.1
+Classifier: Framework :: Django :: 2.2
+Classifier: Intended Audience :: Developers
+Classifier: License :: OSI Approved :: BSD License
+Classifier: Operating System :: OS Independent
+Classifier: Programming Language :: Python
+Classifier: Programming Language :: Python :: 3
+Classifier: Programming Language :: Python :: 3.5
+Classifier: Programming Language :: Python :: 3.6
+Classifier: Programming Language :: Python :: 3.7
+Classifier: Programming Language :: Python :: 3.8
+Classifier: Programming Language :: Python :: 3 :: Only
+Classifier: Topic :: Internet :: WWW/HTTP
+Requires-Python: >=3.5
+Description-Content-Type: text/markdown
+Requires-Dist: django (>=1.11)
+
+# [Django REST framework][docs]
+
+[![build-status-image]][travis]
+[![coverage-status-image]][codecov]
+[![pypi-version]][pypi]
+
+**Awesome web-browsable Web APIs.**
+
+Full documentation for the project is available at [https://www.django-rest-framework.org/][docs].
+
+---
+
+# Funding
+
+REST framework is a *collaboratively funded project*. If you use
+REST framework commercially we strongly encourage you to invest in its
+continued development by [signing up for a paid plan][funding].
+
+The initial aim is to provide a single full-time position on REST framework.
+*Every single sign-up makes a significant impact towards making that possible.*
+
+[![][sentry-img]][sentry-url]
+[![][stream-img]][stream-url]
+[![][rollbar-img]][rollbar-url]
+[![][cadre-img]][cadre-url]
+[![][kloudless-img]][kloudless-url]
+[![][esg-img]][esg-url]
+[![][lightson-img]][lightson-url]
+[![][retool-img]][retool-url]
+
+Many thanks to all our [wonderful sponsors][sponsors], and in particular to our premium backers, [Sentry][sentry-url], [Stream][stream-url], [Rollbar][rollbar-url], [Cadre][cadre-url], [Kloudless][kloudless-url], [ESG][esg-url], [Lights On Software][lightson-url], and [Retool][retool-url].
+
+---
+
+# Overview
+
+Django REST framework is a powerful and flexible toolkit for building Web APIs.
+
+Some reasons you might want to use REST framework:
+
+* The [Web browsable API][sandbox] is a huge usability win for your developers.
+* [Authentication policies][authentication] including optional packages for [OAuth1a][oauth1-section] and [OAuth2][oauth2-section].
+* [Serialization][serializers] that supports both [ORM][modelserializer-section] and [non-ORM][serializer-section] data sources.
+* Customizable all the way down - just use [regular function-based views][functionview-section] if you don't need the [more][generic-views] [powerful][viewsets] [features][routers].
+* [Extensive documentation][docs], and [great community support][group].
+
+There is a live example API for testing purposes, [available here][sandbox].
+
+**Below**: *Screenshot from the browsable API*
+
+![Screenshot][image]
+
+----
+
+# Requirements
+
+* Python (3.5, 3.6, 3.7, 3.8)
+* Django (1.11, 2.0, 2.1, 2.2, 3.0)
+
+We **highly recommend** and only officially support the latest patch release of
+each Python and Django series.
+
+# Installation
+
+Install using `pip`...
+
+    pip install djangorestframework
+
+Add `'rest_framework'` to your `INSTALLED_APPS` setting.
+
+    INSTALLED_APPS = [
+        ...
+        'rest_framework',
+    ]
+
+# Example
+
+Let's take a look at a quick example of using REST framework to build a simple model-backed API for accessing users and groups.
+
+Startup up a new project like so...
+
+    pip install django
+    pip install djangorestframework
+    django-admin startproject example .
+    ./manage.py migrate
+    ./manage.py createsuperuser
+
+
+Now edit the `example/urls.py` module in your project:
+
+```python
+from django.conf.urls import url, include
+from django.contrib.auth.models import User
+from rest_framework import serializers, viewsets, routers
+
+# Serializers define the API representation.
+class UserSerializer(serializers.HyperlinkedModelSerializer):
+    class Meta:
+        model = User
+        fields = ['url', 'username', 'email', 'is_staff']
+
+
+# ViewSets define the view behavior.
+class UserViewSet(viewsets.ModelViewSet):
+    queryset = User.objects.all()
+    serializer_class = UserSerializer
+
+
+# Routers provide a way of automatically determining the URL conf.
+router = routers.DefaultRouter()
+router.register(r'users', UserViewSet)
+
+
+# Wire up our API using automatic URL routing.
+# Additionally, we include login URLs for the browsable API.
+urlpatterns = [
+    url(r'^', include(router.urls)),
+    url(r'^api-auth/', include('rest_framework.urls', namespace='rest_framework'))
+]
+```
+
+We'd also like to configure a couple of settings for our API.
+
+Add the following to your `settings.py` module:
+
+```python
+INSTALLED_APPS = [
+    ...  # Make sure to include the default installed apps here.
+    'rest_framework',
+]
+
+REST_FRAMEWORK = {
+    # Use Django's standard `django.contrib.auth` permissions,
+    # or allow read-only access for unauthenticated users.
+    'DEFAULT_PERMISSION_CLASSES': [
+        'rest_framework.permissions.DjangoModelPermissionsOrAnonReadOnly'
+    ]
+}
+```
+
+That's it, we're done!
+
+    ./manage.py runserver
+
+You can now open the API in your browser at `http://127.0.0.1:8000/`, and view your new 'users' API. If you use the `Login` control in the top right corner you'll also be able to add, create and delete users from the system.
+
+You can also interact with the API using command line tools such as [`curl`](https://curl.haxx.se/). For example, to list the users endpoint:
+
+    $ curl -H 'Accept: application/json; indent=4' -u admin:password http://127.0.0.1:8000/users/
+    [
+        {
+            "url": "http://127.0.0.1:8000/users/1/",
+            "username": "admin",
+            "email": "admin@example.com",
+            "is_staff": true,
+        }
+    ]
+
+Or to create a new user:
+
+    $ curl -X POST -d username=new -d email=new@example.com -d is_staff=false -H 'Accept: application/json; indent=4' -u admin:password http://127.0.0.1:8000/users/
+    {
+        "url": "http://127.0.0.1:8000/users/2/",
+        "username": "new",
+        "email": "new@example.com",
+        "is_staff": false,
+    }
+
+# Documentation & Support
+
+Full documentation for the project is available at [https://www.django-rest-framework.org/][docs].
+
+For questions and support, use the [REST framework discussion group][group], or `#restframework` on freenode IRC.
+
+You may also want to [follow the author on Twitter][twitter].
+
+# Security
+
+Please see the [security policy][security-policy].
+
+[build-status-image]: https://secure.travis-ci.org/encode/django-rest-framework.svg?branch=master
+[travis]: https://travis-ci.org/encode/django-rest-framework?branch=master
+[coverage-status-image]: https://img.shields.io/codecov/c/github/encode/django-rest-framework/master.svg
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+[serializer-section]: https://www.django-rest-framework.org/api-guide/serializers/#serializers
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+[routers]: https://www.django-rest-framework.org/api-guide/routers/
+[serializers]: https://www.django-rest-framework.org/api-guide/serializers/
+[authentication]: https://www.django-rest-framework.org/api-guide/authentication/
+[image]: https://www.django-rest-framework.org/img/quickstart.png
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+Root-Is-Purelib: true
+Tag: py3-none-any
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venv/Lib/site-packages/djangorestframework-3.11.1.dist-info/top_level.txt

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venv/Lib/site-packages/pip-20.2.3.dist-info/INSTALLER

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venv/Lib/site-packages/pip-20.2.3.dist-info/LICENSE.txt

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+Copyright (c) 2008-2019 The pip developers (see AUTHORS.txt file)
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

venv/Lib/site-packages/pip-20.2.3.dist-info/METADATA

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+Metadata-Version: 2.1
+Name: pip
+Version: 20.2.3
+Summary: The PyPA recommended tool for installing Python packages.
+Home-page: https://pip.pypa.io/
+Author: The pip developers
+Author-email: distutils-sig@python.org
+License: MIT
+Project-URL: Documentation, https://pip.pypa.io
+Project-URL: Source, https://github.com/pypa/pip
+Project-URL: Changelog, https://pip.pypa.io/en/stable/news/
+Keywords: distutils easy_install egg setuptools wheel virtualenv
+Platform: UNKNOWN
+Classifier: Development Status :: 5 - Production/Stable
+Classifier: Intended Audience :: Developers
+Classifier: License :: OSI Approved :: MIT License
+Classifier: Topic :: Software Development :: Build Tools
+Classifier: Programming Language :: Python
+Classifier: Programming Language :: Python :: 2
+Classifier: Programming Language :: Python :: 2.7
+Classifier: Programming Language :: Python :: 3
+Classifier: Programming Language :: Python :: 3.5
+Classifier: Programming Language :: Python :: 3.6
+Classifier: Programming Language :: Python :: 3.7
+Classifier: Programming Language :: Python :: 3.8
+Classifier: Programming Language :: Python :: Implementation :: CPython
+Classifier: Programming Language :: Python :: Implementation :: PyPy
+Requires-Python: >=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*
+
+pip - The Python Package Installer
+==================================
+
+.. image:: https://img.shields.io/pypi/v/pip.svg
+   :target: https://pypi.org/project/pip/
+
+.. image:: https://readthedocs.org/projects/pip/badge/?version=latest
+   :target: https://pip.pypa.io/en/latest
+
+pip is the `package installer`_ for Python. You can use pip to install packages from the `Python Package Index`_ and other indexes.
+
+Please take a look at our documentation for how to install and use pip:
+
+* `Installation`_
+* `Usage`_
+
+We release updates regularly, with a new version every 3 months. Find more details in our documentation:
+
+* `Release notes`_
+* `Release process`_
+
+In 2020, we're working on improvements to the heart of pip. Please `learn more and take our survey`_ to help us do it right.
+
+If you find bugs, need help, or want to talk to the developers, please use our mailing lists or chat rooms:
+
+* `Issue tracking`_
+* `Discourse channel`_
+* `User IRC`_
+
+If you want to get involved head over to GitHub to get the source code, look at our development documentation and feel free to jump on the developer mailing lists and chat rooms:
+
+* `GitHub page`_
+* `Development documentation`_
+* `Development mailing list`_
+* `Development IRC`_
+
+Code of Conduct
+---------------
+
+Everyone interacting in the pip project's codebases, issue trackers, chat
+rooms, and mailing lists is expected to follow the `PyPA Code of Conduct`_.
+
+.. _package installer: https://packaging.python.org/guides/tool-recommendations/
+.. _Python Package Index: https://pypi.org
+.. _Installation: https://pip.pypa.io/en/stable/installing.html
+.. _Usage: https://pip.pypa.io/en/stable/
+.. _Release notes: https://pip.pypa.io/en/stable/news.html
+.. _Release process: https://pip.pypa.io/en/latest/development/release-process/
+.. _GitHub page: https://github.com/pypa/pip
+.. _Development documentation: https://pip.pypa.io/en/latest/development
+.. _learn more and take our survey: https://pyfound.blogspot.com/2020/03/new-pip-resolver-to-roll-out-this-year.html
+.. _Issue tracking: https://github.com/pypa/pip/issues
+.. _Discourse channel: https://discuss.python.org/c/packaging
+.. _Development mailing list: https://mail.python.org/mailman3/lists/distutils-sig.python.org/
+.. _User IRC: https://webchat.freenode.net/?channels=%23pypa
+.. _Development IRC: https://webchat.freenode.net/?channels=%23pypa-dev
+.. _PyPA Code of Conduct: https://www.pypa.io/en/latest/code-of-conduct/
+
+

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+Wheel-Version: 1.0
+Generator: bdist_wheel (0.35.1)
+Root-Is-Purelib: true
+Tag: py2-none-any
+Tag: py3-none-any
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venv/Lib/site-packages/pip-20.2.3.dist-info/entry_points.txt

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+[console_scripts]
+pip = pip._internal.cli.main:main
+pip3 = pip._internal.cli.main:main
+pip3.8 = pip._internal.cli.main:main
+

venv/Lib/site-packages/pip-20.2.3.dist-info/top_level.txt

@@ -0,0 +1 @@
+pip

venv/Lib/site-packages/pip/_internal/cli/__init__.py

@@ -0,0 +1,4 @@
+"""Subpackage containing all of pip's command line interface related code
+"""
+
+# This file intentionally does not import submodules

venv/Lib/site-packages/pip/_internal/cli/autocompletion.py

@@ -0,0 +1,164 @@
+"""Logic that powers autocompletion installed by ``pip completion``.
+"""
+
+import optparse
+import os
+import sys
+from itertools import chain
+
+from pip._internal.cli.main_parser import create_main_parser
+from pip._internal.commands import commands_dict, create_command
+from pip._internal.utils.misc import get_installed_distributions
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+
+if MYPY_CHECK_RUNNING:
+    from typing import Any, Iterable, List, Optional
+
+
+def autocomplete():
+    # type: () -> None
+    """Entry Point for completion of main and subcommand options.
+    """
+    # Don't complete if user hasn't sourced bash_completion file.
+    if 'PIP_AUTO_COMPLETE' not in os.environ:
+        return
+    cwords = os.environ['COMP_WORDS'].split()[1:]
+    cword = int(os.environ['COMP_CWORD'])
+    try:
+        current = cwords[cword - 1]
+    except IndexError:
+        current = ''
+
+    parser = create_main_parser()
+    subcommands = list(commands_dict)
+    options = []
+
+    # subcommand
+    subcommand_name = None  # type: Optional[str]
+    for word in cwords:
+        if word in subcommands:
+            subcommand_name = word
+            break
+    # subcommand options
+    if subcommand_name is not None:
+        # special case: 'help' subcommand has no options
+        if subcommand_name == 'help':
+            sys.exit(1)
+        # special case: list locally installed dists for show and uninstall
+        should_list_installed = (
+            subcommand_name in ['show', 'uninstall'] and
+            not current.startswith('-')
+        )
+        if should_list_installed:
+            installed = []
+            lc = current.lower()
+            for dist in get_installed_distributions(local_only=True):
+                if dist.key.startswith(lc) and dist.key not in cwords[1:]:
+                    installed.append(dist.key)
+            # if there are no dists installed, fall back to option completion
+            if installed:
+                for dist in installed:
+                    print(dist)
+                sys.exit(1)
+
+        subcommand = create_command(subcommand_name)
+
+        for opt in subcommand.parser.option_list_all:
+            if opt.help != optparse.SUPPRESS_HELP:
+                for opt_str in opt._long_opts + opt._short_opts:
+                    options.append((opt_str, opt.nargs))
+
+        # filter out previously specified options from available options
+        prev_opts = [x.split('=')[0] for x in cwords[1:cword - 1]]
+        options = [(x, v) for (x, v) in options if x not in prev_opts]
+        # filter options by current input
+        options = [(k, v) for k, v in options if k.startswith(current)]
+        # get completion type given cwords and available subcommand options
+        completion_type = get_path_completion_type(
+            cwords, cword, subcommand.parser.option_list_all,
+        )
+        # get completion files and directories if ``completion_type`` is
+        # ``<file>``, ``<dir>`` or ``<path>``
+        if completion_type:
+            paths = auto_complete_paths(current, completion_type)
+            options = [(path, 0) for path in paths]
+        for option in options:
+            opt_label = option[0]
+            # append '=' to options which require args
+            if option[1] and option[0][:2] == "--":
+                opt_label += '='
+            print(opt_label)
+    else:
+        # show main parser options only when necessary
+
+        opts = [i.option_list for i in parser.option_groups]
+        opts.append(parser.option_list)
+        flattened_opts = chain.from_iterable(opts)
+        if current.startswith('-'):
+            for opt in flattened_opts:
+                if opt.help != optparse.SUPPRESS_HELP:
+                    subcommands += opt._long_opts + opt._short_opts
+        else:
+            # get completion type given cwords and all available options
+            completion_type = get_path_completion_type(cwords, cword,
+                                                       flattened_opts)
+            if completion_type:
+                subcommands = list(auto_complete_paths(current,
+                                                       completion_type))
+
+        print(' '.join([x for x in subcommands if x.startswith(current)]))
+    sys.exit(1)
+
+
+def get_path_completion_type(cwords, cword, opts):
+    # type: (List[str], int, Iterable[Any]) -> Optional[str]
+    """Get the type of path completion (``file``, ``dir``, ``path`` or None)
+
+    :param cwords: same as the environmental variable ``COMP_WORDS``
+    :param cword: same as the environmental variable ``COMP_CWORD``
+    :param opts: The available options to check
+    :return: path completion type (``file``, ``dir``, ``path`` or None)
+    """
+    if cword < 2 or not cwords[cword - 2].startswith('-'):
+        return None
+    for opt in opts:
+        if opt.help == optparse.SUPPRESS_HELP:
+            continue
+        for o in str(opt).split('/'):
+            if cwords[cword - 2].split('=')[0] == o:
+                if not opt.metavar or any(
+                        x in ('path', 'file', 'dir')
+                        for x in opt.metavar.split('/')):
+                    return opt.metavar
+    return None
+
+
+def auto_complete_paths(current, completion_type):
+    # type: (str, str) -> Iterable[str]
+    """If ``completion_type`` is ``file`` or ``path``, list all regular files
+    and directories starting with ``current``; otherwise only list directories
+    starting with ``current``.
+
+    :param current: The word to be completed
+    :param completion_type: path completion type(`file`, `path` or `dir`)i
+    :return: A generator of regular files and/or directories
+    """
+    directory, filename = os.path.split(current)
+    current_path = os.path.abspath(directory)
+    # Don't complete paths if they can't be accessed
+    if not os.access(current_path, os.R_OK):
+        return
+    filename = os.path.normcase(filename)
+    # list all files that start with ``filename``
+    file_list = (x for x in os.listdir(current_path)
+                 if os.path.normcase(x).startswith(filename))
+    for f in file_list:
+        opt = os.path.join(current_path, f)
+        comp_file = os.path.normcase(os.path.join(directory, f))
+        # complete regular files when there is not ``<dir>`` after option
+        # complete directories when there is ``<file>``, ``<path>`` or
+        # ``<dir>``after option
+        if completion_type != 'dir' and os.path.isfile(opt):
+            yield comp_file
+        elif os.path.isdir(opt):
+            yield os.path.join(comp_file, '')

venv/Lib/site-packages/pip/_internal/cli/base_command.py

@@ -0,0 +1,265 @@
+"""Base Command class, and related routines"""
+
+from __future__ import absolute_import, print_function
+
+import logging
+import logging.config
+import optparse
+import os
+import platform
+import sys
+import traceback
+
+from pip._internal.cli import cmdoptions
+from pip._internal.cli.command_context import CommandContextMixIn
+from pip._internal.cli.parser import (
+    ConfigOptionParser,
+    UpdatingDefaultsHelpFormatter,
+)
+from pip._internal.cli.status_codes import (
+    ERROR,
+    PREVIOUS_BUILD_DIR_ERROR,
+    UNKNOWN_ERROR,
+    VIRTUALENV_NOT_FOUND,
+)
+from pip._internal.exceptions import (
+    BadCommand,
+    CommandError,
+    InstallationError,
+    NetworkConnectionError,
+    PreviousBuildDirError,
+    SubProcessError,
+    UninstallationError,
+)
+from pip._internal.utils.deprecation import deprecated
+from pip._internal.utils.filesystem import check_path_owner
+from pip._internal.utils.logging import BrokenStdoutLoggingError, setup_logging
+from pip._internal.utils.misc import get_prog, normalize_path
+from pip._internal.utils.temp_dir import (
+    global_tempdir_manager,
+    tempdir_registry,
+)
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+from pip._internal.utils.virtualenv import running_under_virtualenv
+
+if MYPY_CHECK_RUNNING:
+    from typing import List, Optional, Tuple, Any
+    from optparse import Values
+
+    from pip._internal.utils.temp_dir import (
+        TempDirectoryTypeRegistry as TempDirRegistry
+    )
+
+__all__ = ['Command']
+
+logger = logging.getLogger(__name__)
+
+
+class Command(CommandContextMixIn):
+    usage = None  # type: str
+    ignore_require_venv = False  # type: bool
+
+    def __init__(self, name, summary, isolated=False):
+        # type: (str, str, bool) -> None
+        super(Command, self).__init__()
+        parser_kw = {
+            'usage': self.usage,
+            'prog': '{} {}'.format(get_prog(), name),
+            'formatter': UpdatingDefaultsHelpFormatter(),
+            'add_help_option': False,
+            'name': name,
+            'description': self.__doc__,
+            'isolated': isolated,
+        }
+
+        self.name = name
+        self.summary = summary
+        self.parser = ConfigOptionParser(**parser_kw)
+
+        self.tempdir_registry = None  # type: Optional[TempDirRegistry]
+
+        # Commands should add options to this option group
+        optgroup_name = '{} Options'.format(self.name.capitalize())
+        self.cmd_opts = optparse.OptionGroup(self.parser, optgroup_name)
+
+        # Add the general options
+        gen_opts = cmdoptions.make_option_group(
+            cmdoptions.general_group,
+            self.parser,
+        )
+        self.parser.add_option_group(gen_opts)
+
+        self.add_options()
+
+    def add_options(self):
+        # type: () -> None
+        pass
+
+    def handle_pip_version_check(self, options):
+        # type: (Values) -> None
+        """
+        This is a no-op so that commands by default do not do the pip version
+        check.
+        """
+        # Make sure we do the pip version check if the index_group options
+        # are present.
+        assert not hasattr(options, 'no_index')
+
+    def run(self, options, args):
+        # type: (Values, List[Any]) -> int
+        raise NotImplementedError
+
+    def parse_args(self, args):
+        # type: (List[str]) -> Tuple[Any, Any]
+        # factored out for testability
+        return self.parser.parse_args(args)
+
+    def main(self, args):
+        # type: (List[str]) -> int
+        try:
+            with self.main_context():
+                return self._main(args)
+        finally:
+            logging.shutdown()
+
+    def _main(self, args):
+        # type: (List[str]) -> int
+        # We must initialize this before the tempdir manager, otherwise the
+        # configuration would not be accessible by the time we clean up the
+        # tempdir manager.
+        self.tempdir_registry = self.enter_context(tempdir_registry())
+        # Intentionally set as early as possible so globally-managed temporary
+        # directories are available to the rest of the code.
+        self.enter_context(global_tempdir_manager())
+
+        options, args = self.parse_args(args)
+
+        # Set verbosity so that it can be used elsewhere.
+        self.verbosity = options.verbose - options.quiet
+
+        level_number = setup_logging(
+            verbosity=self.verbosity,
+            no_color=options.no_color,
+            user_log_file=options.log,
+        )
+
+        if (
+            sys.version_info[:2] == (2, 7) and
+            not options.no_python_version_warning
+        ):
+            message = (
+                "pip 21.0 will drop support for Python 2.7 in January 2021. "
+                "More details about Python 2 support in pip can be found at "
+                "https://pip.pypa.io/en/latest/development/release-process/#python-2-support"  # noqa
+            )
+            if platform.python_implementation() == "CPython":
+                message = (
+                    "Python 2.7 reached the end of its life on January "
+                    "1st, 2020. Please upgrade your Python as Python 2.7 "
+                    "is no longer maintained. "
+                ) + message
+            deprecated(message, replacement=None, gone_in="21.0")
+
+        if (
+            sys.version_info[:2] == (3, 5) and
+            not options.no_python_version_warning
+        ):
+            message = (
+                "Python 3.5 reached the end of its life on September "
+                "13th, 2020. Please upgrade your Python as Python 3.5 "
+                "is no longer maintained. pip 21.0 will drop support "
+                "for Python 3.5 in January 2021."
+            )
+            deprecated(message, replacement=None, gone_in="21.0")
+
+        # TODO: Try to get these passing down from the command?
+        #       without resorting to os.environ to hold these.
+        #       This also affects isolated builds and it should.
+
+        if options.no_input:
+            os.environ['PIP_NO_INPUT'] = '1'
+
+        if options.exists_action:
+            os.environ['PIP_EXISTS_ACTION'] = ' '.join(options.exists_action)
+
+        if options.require_venv and not self.ignore_require_venv:
+            # If a venv is required check if it can really be found
+            if not running_under_virtualenv():
+                logger.critical(
+                    'Could not find an activated virtualenv (required).'
+                )
+                sys.exit(VIRTUALENV_NOT_FOUND)
+
+        if options.cache_dir:
+            options.cache_dir = normalize_path(options.cache_dir)
+            if not check_path_owner(options.cache_dir):
+                logger.warning(
+                    "The directory '%s' or its parent directory is not owned "
+                    "or is not writable by the current user. The cache "
+                    "has been disabled. Check the permissions and owner of "
+                    "that directory. If executing pip with sudo, you may want "
+                    "sudo's -H flag.",
+                    options.cache_dir,
+                )
+                options.cache_dir = None
+
+        if getattr(options, "build_dir", None):
+            deprecated(
+                reason=(
+                    "The -b/--build/--build-dir/--build-directory "
+                    "option is deprecated."
+                ),
+                replacement=(
+                    "use the TMPDIR/TEMP/TMP environment variable, "
+                    "possibly combined with --no-clean"
+                ),
+                gone_in="20.3",
+                issue=8333,
+            )
+
+        if 'resolver' in options.unstable_features:
+            logger.critical(
+                "--unstable-feature=resolver is no longer supported, and "
+                "has been replaced with --use-feature=2020-resolver instead."
+            )
+            sys.exit(ERROR)
+
+        try:
+            status = self.run(options, args)
+            assert isinstance(status, int)
+            return status
+        except PreviousBuildDirError as exc:
+            logger.critical(str(exc))
+            logger.debug('Exception information:', exc_info=True)
+
+            return PREVIOUS_BUILD_DIR_ERROR
+        except (InstallationError, UninstallationError, BadCommand,
+                SubProcessError, NetworkConnectionError) as exc:
+            logger.critical(str(exc))
+            logger.debug('Exception information:', exc_info=True)
+
+            return ERROR
+        except CommandError as exc:
+            logger.critical('%s', exc)
+            logger.debug('Exception information:', exc_info=True)
+
+            return ERROR
+        except BrokenStdoutLoggingError:
+            # Bypass our logger and write any remaining messages to stderr
+            # because stdout no longer works.
+            print('ERROR: Pipe to stdout was broken', file=sys.stderr)
+            if level_number <= logging.DEBUG:
+                traceback.print_exc(file=sys.stderr)
+
+            return ERROR
+        except KeyboardInterrupt:
+            logger.critical('Operation cancelled by user')
+            logger.debug('Exception information:', exc_info=True)
+
+            return ERROR
+        except BaseException:
+            logger.critical('Exception:', exc_info=True)
+
+            return UNKNOWN_ERROR
+        finally:
+            self.handle_pip_version_check(options)

venv/Lib/site-packages/pip/_internal/cli/cmdoptions.py

@@ -0,0 +1,975 @@
+"""
+shared options and groups
+
+The principle here is to define options once, but *not* instantiate them
+globally. One reason being that options with action='append' can carry state
+between parses. pip parses general options twice internally, and shouldn't
+pass on state. To be consistent, all options will follow this design.
+"""
+
+# The following comment should be removed at some point in the future.
+# mypy: strict-optional=False
+
+from __future__ import absolute_import
+
+import os
+import textwrap
+import warnings
+from distutils.util import strtobool
+from functools import partial
+from optparse import SUPPRESS_HELP, Option, OptionGroup
+from textwrap import dedent
+
+from pip._internal.cli.progress_bars import BAR_TYPES
+from pip._internal.exceptions import CommandError
+from pip._internal.locations import USER_CACHE_DIR, get_src_prefix
+from pip._internal.models.format_control import FormatControl
+from pip._internal.models.index import PyPI
+from pip._internal.models.target_python import TargetPython
+from pip._internal.utils.hashes import STRONG_HASHES
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+
+if MYPY_CHECK_RUNNING:
+    from typing import Any, Callable, Dict, Optional, Tuple
+    from optparse import OptionParser, Values
+    from pip._internal.cli.parser import ConfigOptionParser
+
+
+def raise_option_error(parser, option, msg):
+    # type: (OptionParser, Option, str) -> None
+    """
+    Raise an option parsing error using parser.error().
+
+    Args:
+      parser: an OptionParser instance.
+      option: an Option instance.
+      msg: the error text.
+    """
+    msg = '{} error: {}'.format(option, msg)
+    msg = textwrap.fill(' '.join(msg.split()))
+    parser.error(msg)
+
+
+def make_option_group(group, parser):
+    # type: (Dict[str, Any], ConfigOptionParser) -> OptionGroup
+    """
+    Return an OptionGroup object
+    group  -- assumed to be dict with 'name' and 'options' keys
+    parser -- an optparse Parser
+    """
+    option_group = OptionGroup(parser, group['name'])
+    for option in group['options']:
+        option_group.add_option(option())
+    return option_group
+
+
+def check_install_build_global(options, check_options=None):
+    # type: (Values, Optional[Values]) -> None
+    """Disable wheels if per-setup.py call options are set.
+
+    :param options: The OptionParser options to update.
+    :param check_options: The options to check, if not supplied defaults to
+        options.
+    """
+    if check_options is None:
+        check_options = options
+
+    def getname(n):
+        # type: (str) -> Optional[Any]
+        return getattr(check_options, n, None)
+    names = ["build_options", "global_options", "install_options"]
+    if any(map(getname, names)):
+        control = options.format_control
+        control.disallow_binaries()
+        warnings.warn(
+            'Disabling all use of wheels due to the use of --build-option '
+            '/ --global-option / --install-option.', stacklevel=2,
+        )
+
+
+def check_dist_restriction(options, check_target=False):
+    # type: (Values, bool) -> None
+    """Function for determining if custom platform options are allowed.
+
+    :param options: The OptionParser options.
+    :param check_target: Whether or not to check if --target is being used.
+    """
+    dist_restriction_set = any([
+        options.python_version,
+        options.platform,
+        options.abi,
+        options.implementation,
+    ])
+
+    binary_only = FormatControl(set(), {':all:'})
+    sdist_dependencies_allowed = (
+        options.format_control != binary_only and
+        not options.ignore_dependencies
+    )
+
+    # Installations or downloads using dist restrictions must not combine
+    # source distributions and dist-specific wheels, as they are not
+    # guaranteed to be locally compatible.
+    if dist_restriction_set and sdist_dependencies_allowed:
+        raise CommandError(
+            "When restricting platform and interpreter constraints using "
+            "--python-version, --platform, --abi, or --implementation, "
+            "either --no-deps must be set, or --only-binary=:all: must be "
+            "set and --no-binary must not be set (or must be set to "
+            ":none:)."
+        )
+
+    if check_target:
+        if dist_restriction_set and not options.target_dir:
+            raise CommandError(
+                "Can not use any platform or abi specific options unless "
+                "installing via '--target'"
+            )
+
+
+def _path_option_check(option, opt, value):
+    # type: (Option, str, str) -> str
+    return os.path.expanduser(value)
+
+
+class PipOption(Option):
+    TYPES = Option.TYPES + ("path",)
+    TYPE_CHECKER = Option.TYPE_CHECKER.copy()
+    TYPE_CHECKER["path"] = _path_option_check
+
+
+###########
+# options #
+###########
+
+help_ = partial(
+    Option,
+    '-h', '--help',
+    dest='help',
+    action='help',
+    help='Show help.',
+)  # type: Callable[..., Option]
+
+isolated_mode = partial(
+    Option,
+    "--isolated",
+    dest="isolated_mode",
+    action="store_true",
+    default=False,
+    help=(
+        "Run pip in an isolated mode, ignoring environment variables and user "
+        "configuration."
+    ),
+)  # type: Callable[..., Option]
+
+require_virtualenv = partial(
+    Option,
+    # Run only if inside a virtualenv, bail if not.
+    '--require-virtualenv', '--require-venv',
+    dest='require_venv',
+    action='store_true',
+    default=False,
+    help=SUPPRESS_HELP
+)  # type: Callable[..., Option]
+
+verbose = partial(
+    Option,
+    '-v', '--verbose',
+    dest='verbose',
+    action='count',
+    default=0,
+    help='Give more output. Option is additive, and can be used up to 3 times.'
+)  # type: Callable[..., Option]
+
+no_color = partial(
+    Option,
+    '--no-color',
+    dest='no_color',
+    action='store_true',
+    default=False,
+    help="Suppress colored output",
+)  # type: Callable[..., Option]
+
+version = partial(
+    Option,
+    '-V', '--version',
+    dest='version',
+    action='store_true',
+    help='Show version and exit.',
+)  # type: Callable[..., Option]
+
+quiet = partial(
+    Option,
+    '-q', '--quiet',
+    dest='quiet',
+    action='count',
+    default=0,
+    help=(
+        'Give less output. Option is additive, and can be used up to 3'
+        ' times (corresponding to WARNING, ERROR, and CRITICAL logging'
+        ' levels).'
+    ),
+)  # type: Callable[..., Option]
+
+progress_bar = partial(
+    Option,
+    '--progress-bar',
+    dest='progress_bar',
+    type='choice',
+    choices=list(BAR_TYPES.keys()),
+    default='on',
+    help=(
+        'Specify type of progress to be displayed [' +
+        '|'.join(BAR_TYPES.keys()) + '] (default: %default)'
+    ),
+)  # type: Callable[..., Option]
+
+log = partial(
+    PipOption,
+    "--log", "--log-file", "--local-log",
+    dest="log",
+    metavar="path",
+    type="path",
+    help="Path to a verbose appending log."
+)  # type: Callable[..., Option]
+
+no_input = partial(
+    Option,
+    # Don't ask for input
+    '--no-input',
+    dest='no_input',
+    action='store_true',
+    default=False,
+    help="Disable prompting for input."
+)  # type: Callable[..., Option]
+
+proxy = partial(
+    Option,
+    '--proxy',
+    dest='proxy',
+    type='str',
+    default='',
+    help="Specify a proxy in the form [user:passwd@]proxy.server:port."
+)  # type: Callable[..., Option]
+
+retries = partial(
+    Option,
+    '--retries',
+    dest='retries',
+    type='int',
+    default=5,
+    help="Maximum number of retries each connection should attempt "
+         "(default %default times).",
+)  # type: Callable[..., Option]
+
+timeout = partial(
+    Option,
+    '--timeout', '--default-timeout',
+    metavar='sec',
+    dest='timeout',
+    type='float',
+    default=15,
+    help='Set the socket timeout (default %default seconds).',
+)  # type: Callable[..., Option]
+
+
+def exists_action():
+    # type: () -> Option
+    return Option(
+        # Option when path already exist
+        '--exists-action',
+        dest='exists_action',
+        type='choice',
+        choices=['s', 'i', 'w', 'b', 'a'],
+        default=[],
+        action='append',
+        metavar='action',
+        help="Default action when a path already exists: "
+             "(s)witch, (i)gnore, (w)ipe, (b)ackup, (a)bort.",
+    )
+
+
+cert = partial(
+    PipOption,
+    '--cert',
+    dest='cert',
+    type='path',
+    metavar='path',
+    help="Path to alternate CA bundle.",
+)  # type: Callable[..., Option]
+
+client_cert = partial(
+    PipOption,
+    '--client-cert',
+    dest='client_cert',
+    type='path',
+    default=None,
+    metavar='path',
+    help="Path to SSL client certificate, a single file containing the "
+         "private key and the certificate in PEM format.",
+)  # type: Callable[..., Option]
+
+index_url = partial(
+    Option,
+    '-i', '--index-url', '--pypi-url',
+    dest='index_url',
+    metavar='URL',
+    default=PyPI.simple_url,
+    help="Base URL of the Python Package Index (default %default). "
+         "This should point to a repository compliant with PEP 503 "
+         "(the simple repository API) or a local directory laid out "
+         "in the same format.",
+)  # type: Callable[..., Option]
+
+
+def extra_index_url():
+    # type: () -> Option
+    return Option(
+        '--extra-index-url',
+        dest='extra_index_urls',
+        metavar='URL',
+        action='append',
+        default=[],
+        help="Extra URLs of package indexes to use in addition to "
+             "--index-url. Should follow the same rules as "
+             "--index-url.",
+    )
+
+
+no_index = partial(
+    Option,
+    '--no-index',
+    dest='no_index',
+    action='store_true',
+    default=False,
+    help='Ignore package index (only looking at --find-links URLs instead).',
+)  # type: Callable[..., Option]
+
+
+def find_links():
+    # type: () -> Option
+    return Option(
+        '-f', '--find-links',
+        dest='find_links',
+        action='append',
+        default=[],
+        metavar='url',
+        help="If a URL or path to an html file, then parse for links to "
+             "archives such as sdist (.tar.gz) or wheel (.whl) files. "
+             "If a local path or file:// URL that's a directory,  "
+             "then look for archives in the directory listing. "
+             "Links to VCS project URLs are not supported.",
+    )
+
+
+def trusted_host():
+    # type: () -> Option
+    return Option(
+        "--trusted-host",
+        dest="trusted_hosts",
+        action="append",
+        metavar="HOSTNAME",
+        default=[],
+        help="Mark this host or host:port pair as trusted, even though it "
+             "does not have valid or any HTTPS.",
+    )
+
+
+def constraints():
+    # type: () -> Option
+    return Option(
+        '-c', '--constraint',
+        dest='constraints',
+        action='append',
+        default=[],
+        metavar='file',
+        help='Constrain versions using the given constraints file. '
+        'This option can be used multiple times.'
+    )
+
+
+def requirements():
+    # type: () -> Option
+    return Option(
+        '-r', '--requirement',
+        dest='requirements',
+        action='append',
+        default=[],
+        metavar='file',
+        help='Install from the given requirements file. '
+        'This option can be used multiple times.'
+    )
+
+
+def editable():
+    # type: () -> Option
+    return Option(
+        '-e', '--editable',
+        dest='editables',
+        action='append',
+        default=[],
+        metavar='path/url',
+        help=('Install a project in editable mode (i.e. setuptools '
+              '"develop mode") from a local project path or a VCS url.'),
+    )
+
+
+def _handle_src(option, opt_str, value, parser):
+    # type: (Option, str, str, OptionParser) -> None
+    value = os.path.abspath(value)
+    setattr(parser.values, option.dest, value)
+
+
+src = partial(
+    PipOption,
+    '--src', '--source', '--source-dir', '--source-directory',
+    dest='src_dir',
+    type='path',
+    metavar='dir',
+    default=get_src_prefix(),
+    action='callback',
+    callback=_handle_src,
+    help='Directory to check out editable projects into. '
+    'The default in a virtualenv is "<venv path>/src". '
+    'The default for global installs is "<current dir>/src".'
+)  # type: Callable[..., Option]
+
+
+def _get_format_control(values, option):
+    # type: (Values, Option) -> Any
+    """Get a format_control object."""
+    return getattr(values, option.dest)
+
+
+def _handle_no_binary(option, opt_str, value, parser):
+    # type: (Option, str, str, OptionParser) -> None
+    existing = _get_format_control(parser.values, option)
+    FormatControl.handle_mutual_excludes(
+        value, existing.no_binary, existing.only_binary,
+    )
+
+
+def _handle_only_binary(option, opt_str, value, parser):
+    # type: (Option, str, str, OptionParser) -> None
+    existing = _get_format_control(parser.values, option)
+    FormatControl.handle_mutual_excludes(
+        value, existing.only_binary, existing.no_binary,
+    )
+
+
+def no_binary():
+    # type: () -> Option
+    format_control = FormatControl(set(), set())
+    return Option(
+        "--no-binary", dest="format_control", action="callback",
+        callback=_handle_no_binary, type="str",
+        default=format_control,
+        help='Do not use binary packages. Can be supplied multiple times, and '
+             'each time adds to the existing value. Accepts either ":all:" to '
+             'disable all binary packages, ":none:" to empty the set (notice '
+             'the colons), or one or more package names with commas between '
+             'them (no colons). Note that some packages are tricky to compile '
+             'and may fail to install when this option is used on them.',
+    )
+
+
+def only_binary():
+    # type: () -> Option
+    format_control = FormatControl(set(), set())
+    return Option(
+        "--only-binary", dest="format_control", action="callback",
+        callback=_handle_only_binary, type="str",
+        default=format_control,
+        help='Do not use source packages. Can be supplied multiple times, and '
+             'each time adds to the existing value. Accepts either ":all:" to '
+             'disable all source packages, ":none:" to empty the set, or one '
+             'or more package names with commas between them. Packages '
+             'without binary distributions will fail to install when this '
+             'option is used on them.',
+    )
+
+
+platform = partial(
+    Option,
+    '--platform',
+    dest='platform',
+    metavar='platform',
+    default=None,
+    help=("Only use wheels compatible with <platform>. "
+          "Defaults to the platform of the running system."),
+)  # type: Callable[..., Option]
+
+
+# This was made a separate function for unit-testing purposes.
+def _convert_python_version(value):
+    # type: (str) -> Tuple[Tuple[int, ...], Optional[str]]
+    """
+    Convert a version string like "3", "37", or "3.7.3" into a tuple of ints.
+
+    :return: A 2-tuple (version_info, error_msg), where `error_msg` is
+        non-None if and only if there was a parsing error.
+    """
+    if not value:
+        # The empty string is the same as not providing a value.
+        return (None, None)
+
+    parts = value.split('.')
+    if len(parts) > 3:
+        return ((), 'at most three version parts are allowed')
+
+    if len(parts) == 1:
+        # Then we are in the case of "3" or "37".
+        value = parts[0]
+        if len(value) > 1:
+            parts = [value[0], value[1:]]
+
+    try:
+        version_info = tuple(int(part) for part in parts)
+    except ValueError:
+        return ((), 'each version part must be an integer')
+
+    return (version_info, None)
+
+
+def _handle_python_version(option, opt_str, value, parser):
+    # type: (Option, str, str, OptionParser) -> None
+    """
+    Handle a provided --python-version value.
+    """
+    version_info, error_msg = _convert_python_version(value)
+    if error_msg is not None:
+        msg = (
+            'invalid --python-version value: {!r}: {}'.format(
+                value, error_msg,
+            )
+        )
+        raise_option_error(parser, option=option, msg=msg)
+
+    parser.values.python_version = version_info
+
+
+python_version = partial(
+    Option,
+    '--python-version',
+    dest='python_version',
+    metavar='python_version',
+    action='callback',
+    callback=_handle_python_version, type='str',
+    default=None,
+    help=dedent("""\
+    The Python interpreter version to use for wheel and "Requires-Python"
+    compatibility checks. Defaults to a version derived from the running
+    interpreter. The version can be specified using up to three dot-separated
+    integers (e.g. "3" for 3.0.0, "3.7" for 3.7.0, or "3.7.3"). A major-minor
+    version can also be given as a string without dots (e.g. "37" for 3.7.0).
+    """),
+)  # type: Callable[..., Option]
+
+
+implementation = partial(
+    Option,
+    '--implementation',
+    dest='implementation',
+    metavar='implementation',
+    default=None,
+    help=("Only use wheels compatible with Python "
+          "implementation <implementation>, e.g. 'pp', 'jy', 'cp', "
+          " or 'ip'. If not specified, then the current "
+          "interpreter implementation is used.  Use 'py' to force "
+          "implementation-agnostic wheels."),
+)  # type: Callable[..., Option]
+
+
+abi = partial(
+    Option,
+    '--abi',
+    dest='abi',
+    metavar='abi',
+    default=None,
+    help=("Only use wheels compatible with Python "
+          "abi <abi>, e.g. 'pypy_41'.  If not specified, then the "
+          "current interpreter abi tag is used.  Generally "
+          "you will need to specify --implementation, "
+          "--platform, and --python-version when using "
+          "this option."),
+)  # type: Callable[..., Option]
+
+
+def add_target_python_options(cmd_opts):
+    # type: (OptionGroup) -> None
+    cmd_opts.add_option(platform())
+    cmd_opts.add_option(python_version())
+    cmd_opts.add_option(implementation())
+    cmd_opts.add_option(abi())
+
+
+def make_target_python(options):
+    # type: (Values) -> TargetPython
+    target_python = TargetPython(
+        platform=options.platform,
+        py_version_info=options.python_version,
+        abi=options.abi,
+        implementation=options.implementation,
+    )
+
+    return target_python
+
+
+def prefer_binary():
+    # type: () -> Option
+    return Option(
+        "--prefer-binary",
+        dest="prefer_binary",
+        action="store_true",
+        default=False,
+        help="Prefer older binary packages over newer source packages."
+    )
+
+
+cache_dir = partial(
+    PipOption,
+    "--cache-dir",
+    dest="cache_dir",
+    default=USER_CACHE_DIR,
+    metavar="dir",
+    type='path',
+    help="Store the cache data in <dir>."
+)  # type: Callable[..., Option]
+
+
+def _handle_no_cache_dir(option, opt, value, parser):
+    # type: (Option, str, str, OptionParser) -> None
+    """
+    Process a value provided for the --no-cache-dir option.
+
+    This is an optparse.Option callback for the --no-cache-dir option.
+    """
+    # The value argument will be None if --no-cache-dir is passed via the
+    # command-line, since the option doesn't accept arguments.  However,
+    # the value can be non-None if the option is triggered e.g. by an
+    # environment variable, like PIP_NO_CACHE_DIR=true.
+    if value is not None:
+        # Then parse the string value to get argument error-checking.
+        try:
+            strtobool(value)
+        except ValueError as exc:
+            raise_option_error(parser, option=option, msg=str(exc))
+
+    # Originally, setting PIP_NO_CACHE_DIR to a value that strtobool()
+    # converted to 0 (like "false" or "no") caused cache_dir to be disabled
+    # rather than enabled (logic would say the latter).  Thus, we disable
+    # the cache directory not just on values that parse to True, but (for
+    # backwards compatibility reasons) also on values that parse to False.
+    # In other words, always set it to False if the option is provided in
+    # some (valid) form.
+    parser.values.cache_dir = False
+
+
+no_cache = partial(
+    Option,
+    "--no-cache-dir",
+    dest="cache_dir",
+    action="callback",
+    callback=_handle_no_cache_dir,
+    help="Disable the cache.",
+)  # type: Callable[..., Option]
+
+no_deps = partial(
+    Option,
+    '--no-deps', '--no-dependencies',
+    dest='ignore_dependencies',
+    action='store_true',
+    default=False,
+    help="Don't install package dependencies.",
+)  # type: Callable[..., Option]
+
+
+def _handle_build_dir(option, opt, value, parser):
+    # type: (Option, str, str, OptionParser) -> None
+    if value:
+        value = os.path.abspath(value)
+    setattr(parser.values, option.dest, value)
+
+
+build_dir = partial(
+    PipOption,
+    '-b', '--build', '--build-dir', '--build-directory',
+    dest='build_dir',
+    type='path',
+    metavar='dir',
+    action='callback',
+    callback=_handle_build_dir,
+    help='(DEPRECATED) '
+         'Directory to unpack packages into and build in. Note that '
+         'an initial build still takes place in a temporary directory. '
+         'The location of temporary directories can be controlled by setting '
+         'the TMPDIR environment variable (TEMP on Windows) appropriately. '
+         'When passed, build directories are not cleaned in case of failures.'
+)  # type: Callable[..., Option]
+
+ignore_requires_python = partial(
+    Option,
+    '--ignore-requires-python',
+    dest='ignore_requires_python',
+    action='store_true',
+    help='Ignore the Requires-Python information.'
+)  # type: Callable[..., Option]
+
+no_build_isolation = partial(
+    Option,
+    '--no-build-isolation',
+    dest='build_isolation',
+    action='store_false',
+    default=True,
+    help='Disable isolation when building a modern source distribution. '
+         'Build dependencies specified by PEP 518 must be already installed '
+         'if this option is used.'
+)  # type: Callable[..., Option]
+
+
+def _handle_no_use_pep517(option, opt, value, parser):
+    # type: (Option, str, str, OptionParser) -> None
+    """
+    Process a value provided for the --no-use-pep517 option.
+
+    This is an optparse.Option callback for the no_use_pep517 option.
+    """
+    # Since --no-use-pep517 doesn't accept arguments, the value argument
+    # will be None if --no-use-pep517 is passed via the command-line.
+    # However, the value can be non-None if the option is triggered e.g.
+    # by an environment variable, for example "PIP_NO_USE_PEP517=true".
+    if value is not None:
+        msg = """A value was passed for --no-use-pep517,
+        probably using either the PIP_NO_USE_PEP517 environment variable
+        or the "no-use-pep517" config file option. Use an appropriate value
+        of the PIP_USE_PEP517 environment variable or the "use-pep517"
+        config file option instead.
+        """
+        raise_option_error(parser, option=option, msg=msg)
+
+    # Otherwise, --no-use-pep517 was passed via the command-line.
+    parser.values.use_pep517 = False
+
+
+use_pep517 = partial(
+    Option,
+    '--use-pep517',
+    dest='use_pep517',
+    action='store_true',
+    default=None,
+    help='Use PEP 517 for building source distributions '
+         '(use --no-use-pep517 to force legacy behaviour).'
+)  # type: Any
+
+no_use_pep517 = partial(
+    Option,
+    '--no-use-pep517',
+    dest='use_pep517',
+    action='callback',
+    callback=_handle_no_use_pep517,
+    default=None,
+    help=SUPPRESS_HELP
+)  # type: Any
+
+install_options = partial(
+    Option,
+    '--install-option',
+    dest='install_options',
+    action='append',
+    metavar='options',
+    help="Extra arguments to be supplied to the setup.py install "
+         "command (use like --install-option=\"--install-scripts=/usr/local/"
+         "bin\"). Use multiple --install-option options to pass multiple "
+         "options to setup.py install. If you are using an option with a "
+         "directory path, be sure to use absolute path.",
+)  # type: Callable[..., Option]
+
+global_options = partial(
+    Option,
+    '--global-option',
+    dest='global_options',
+    action='append',
+    metavar='options',
+    help="Extra global options to be supplied to the setup.py "
+         "call before the install command.",
+)  # type: Callable[..., Option]
+
+no_clean = partial(
+    Option,
+    '--no-clean',
+    action='store_true',
+    default=False,
+    help="Don't clean up build directories."
+)  # type: Callable[..., Option]
+
+pre = partial(
+    Option,
+    '--pre',
+    action='store_true',
+    default=False,
+    help="Include pre-release and development versions. By default, "
+         "pip only finds stable versions.",
+)  # type: Callable[..., Option]
+
+disable_pip_version_check = partial(
+    Option,
+    "--disable-pip-version-check",
+    dest="disable_pip_version_check",
+    action="store_true",
+    default=False,
+    help="Don't periodically check PyPI to determine whether a new version "
+         "of pip is available for download. Implied with --no-index.",
+)  # type: Callable[..., Option]
+
+
+def _handle_merge_hash(option, opt_str, value, parser):
+    # type: (Option, str, str, OptionParser) -> None
+    """Given a value spelled "algo:digest", append the digest to a list
+    pointed to in a dict by the algo name."""
+    if not parser.values.hashes:
+        parser.values.hashes = {}
+    try:
+        algo, digest = value.split(':', 1)
+    except ValueError:
+        parser.error('Arguments to {} must be a hash name '  # noqa
+                     'followed by a value, like --hash=sha256:'
+                     'abcde...'.format(opt_str))
+    if algo not in STRONG_HASHES:
+        parser.error('Allowed hash algorithms for {} are {}.'.format(  # noqa
+                     opt_str, ', '.join(STRONG_HASHES)))
+    parser.values.hashes.setdefault(algo, []).append(digest)
+
+
+hash = partial(
+    Option,
+    '--hash',
+    # Hash values eventually end up in InstallRequirement.hashes due to
+    # __dict__ copying in process_line().
+    dest='hashes',
+    action='callback',
+    callback=_handle_merge_hash,
+    type='string',
+    help="Verify that the package's archive matches this "
+         'hash before installing. Example: --hash=sha256:abcdef...',
+)  # type: Callable[..., Option]
+
+
+require_hashes = partial(
+    Option,
+    '--require-hashes',
+    dest='require_hashes',
+    action='store_true',
+    default=False,
+    help='Require a hash to check each requirement against, for '
+         'repeatable installs. This option is implied when any package in a '
+         'requirements file has a --hash option.',
+)  # type: Callable[..., Option]
+
+
+list_path = partial(
+    PipOption,
+    '--path',
+    dest='path',
+    type='path',
+    action='append',
+    help='Restrict to the specified installation path for listing '
+         'packages (can be used multiple times).'
+)  # type: Callable[..., Option]
+
+
+def check_list_path_option(options):
+    # type: (Values) -> None
+    if options.path and (options.user or options.local):
+        raise CommandError(
+            "Cannot combine '--path' with '--user' or '--local'"
+        )
+
+
+no_python_version_warning = partial(
+    Option,
+    '--no-python-version-warning',
+    dest='no_python_version_warning',
+    action='store_true',
+    default=False,
+    help='Silence deprecation warnings for upcoming unsupported Pythons.',
+)  # type: Callable[..., Option]
+
+
+unstable_feature = partial(
+    Option,
+    '--unstable-feature',
+    dest='unstable_features',
+    metavar='feature',
+    action='append',
+    default=[],
+    choices=['resolver'],
+    help=SUPPRESS_HELP,  # TODO: drop this in pip 20.3
+)  # type: Callable[..., Option]
+
+use_new_feature = partial(
+    Option,
+    '--use-feature',
+    dest='features_enabled',
+    metavar='feature',
+    action='append',
+    default=[],
+    choices=['2020-resolver', 'fast-deps'],
+    help='Enable new functionality, that may be backward incompatible.',
+)  # type: Callable[..., Option]
+
+use_deprecated_feature = partial(
+    Option,
+    '--use-deprecated',
+    dest='deprecated_features_enabled',
+    metavar='feature',
+    action='append',
+    default=[],
+    choices=[],
+    help=(
+        'Enable deprecated functionality, that will be removed in the future.'
+    ),
+)  # type: Callable[..., Option]
+
+
+##########
+# groups #
+##########
+
+general_group = {
+    'name': 'General Options',
+    'options': [
+        help_,
+        isolated_mode,
+        require_virtualenv,
+        verbose,
+        version,
+        quiet,
+        log,
+        no_input,
+        proxy,
+        retries,
+        timeout,
+        exists_action,
+        trusted_host,
+        cert,
+        client_cert,
+        cache_dir,
+        no_cache,
+        disable_pip_version_check,
+        no_color,
+        no_python_version_warning,
+        unstable_feature,
+        use_new_feature,
+        use_deprecated_feature,
+    ]
+}  # type: Dict[str, Any]
+
+index_group = {
+    'name': 'Package Index Options',
+    'options': [
+        index_url,
+        extra_index_url,
+        no_index,
+        find_links,
+    ]
+}  # type: Dict[str, Any]

venv/Lib/site-packages/pip/_internal/cli/command_context.py

@@ -0,0 +1,36 @@
+from contextlib import contextmanager
+
+from pip._vendor.contextlib2 import ExitStack
+
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+
+if MYPY_CHECK_RUNNING:
+    from typing import Iterator, ContextManager, TypeVar
+
+    _T = TypeVar('_T', covariant=True)
+
+
+class CommandContextMixIn(object):
+    def __init__(self):
+        # type: () -> None
+        super(CommandContextMixIn, self).__init__()
+        self._in_main_context = False
+        self._main_context = ExitStack()
+
+    @contextmanager
+    def main_context(self):
+        # type: () -> Iterator[None]
+        assert not self._in_main_context
+
+        self._in_main_context = True
+        try:
+            with self._main_context:
+                yield
+        finally:
+            self._in_main_context = False
+
+    def enter_context(self, context_provider):
+        # type: (ContextManager[_T]) -> _T
+        assert self._in_main_context
+
+        return self._main_context.enter_context(context_provider)

venv/Lib/site-packages/pip/_internal/cli/main.py

@@ -0,0 +1,75 @@
+"""Primary application entrypoint.
+"""
+from __future__ import absolute_import
+
+import locale
+import logging
+import os
+import sys
+
+from pip._internal.cli.autocompletion import autocomplete
+from pip._internal.cli.main_parser import parse_command
+from pip._internal.commands import create_command
+from pip._internal.exceptions import PipError
+from pip._internal.utils import deprecation
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+
+if MYPY_CHECK_RUNNING:
+    from typing import List, Optional
+
+logger = logging.getLogger(__name__)
+
+
+# Do not import and use main() directly! Using it directly is actively
+# discouraged by pip's maintainers. The name, location and behavior of
+# this function is subject to change, so calling it directly is not
+# portable across different pip versions.
+
+# In addition, running pip in-process is unsupported and unsafe. This is
+# elaborated in detail at
+# https://pip.pypa.io/en/stable/user_guide/#using-pip-from-your-program.
+# That document also provides suggestions that should work for nearly
+# all users that are considering importing and using main() directly.
+
+# However, we know that certain users will still want to invoke pip
+# in-process. If you understand and accept the implications of using pip
+# in an unsupported manner, the best approach is to use runpy to avoid
+# depending on the exact location of this entry point.
+
+# The following example shows how to use runpy to invoke pip in that
+# case:
+#
+#     sys.argv = ["pip", your, args, here]
+#     runpy.run_module("pip", run_name="__main__")
+#
+# Note that this will exit the process after running, unlike a direct
+# call to main. As it is not safe to do any processing after calling
+# main, this should not be an issue in practice.
+
+def main(args=None):
+    # type: (Optional[List[str]]) -> int
+    if args is None:
+        args = sys.argv[1:]
+
+    # Configure our deprecation warnings to be sent through loggers
+    deprecation.install_warning_logger()
+
+    autocomplete()
+
+    try:
+        cmd_name, cmd_args = parse_command(args)
+    except PipError as exc:
+        sys.stderr.write("ERROR: {}".format(exc))
+        sys.stderr.write(os.linesep)
+        sys.exit(1)
+
+    # Needed for locale.getpreferredencoding(False) to work
+    # in pip._internal.utils.encoding.auto_decode
+    try:
+        locale.setlocale(locale.LC_ALL, '')
+    except locale.Error as e:
+        # setlocale can apparently crash if locale are uninitialized
+        logger.debug("Ignoring error %s when setting locale", e)
+    command = create_command(cmd_name, isolated=("--isolated" in cmd_args))
+
+    return command.main(cmd_args)

venv/Lib/site-packages/pip/_internal/cli/main_parser.py

@@ -0,0 +1,99 @@
+"""A single place for constructing and exposing the main parser
+"""
+
+import os
+import sys
+
+from pip._internal.cli import cmdoptions
+from pip._internal.cli.parser import (
+    ConfigOptionParser,
+    UpdatingDefaultsHelpFormatter,
+)
+from pip._internal.commands import commands_dict, get_similar_commands
+from pip._internal.exceptions import CommandError
+from pip._internal.utils.misc import get_pip_version, get_prog
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+
+if MYPY_CHECK_RUNNING:
+    from typing import Tuple, List
+
+
+__all__ = ["create_main_parser", "parse_command"]
+
+
+def create_main_parser():
+    # type: () -> ConfigOptionParser
+    """Creates and returns the main parser for pip's CLI
+    """
+
+    parser_kw = {
+        'usage': '\n%prog <command> [options]',
+        'add_help_option': False,
+        'formatter': UpdatingDefaultsHelpFormatter(),
+        'name': 'global',
+        'prog': get_prog(),
+    }
+
+    parser = ConfigOptionParser(**parser_kw)
+    parser.disable_interspersed_args()
+
+    parser.version = get_pip_version()
+
+    # add the general options
+    gen_opts = cmdoptions.make_option_group(cmdoptions.general_group, parser)
+    parser.add_option_group(gen_opts)
+
+    # so the help formatter knows
+    parser.main = True  # type: ignore
+
+    # create command listing for description
+    description = [''] + [
+        '{name:27} {command_info.summary}'.format(**locals())
+        for name, command_info in commands_dict.items()
+    ]
+    parser.description = '\n'.join(description)
+
+    return parser
+
+
+def parse_command(args):
+    # type: (List[str]) -> Tuple[str, List[str]]
+    parser = create_main_parser()
+
+    # Note: parser calls disable_interspersed_args(), so the result of this
+    # call is to split the initial args into the general options before the
+    # subcommand and everything else.
+    # For example:
+    #  args: ['--timeout=5', 'install', '--user', 'INITools']
+    #  general_options: ['--timeout==5']
+    #  args_else: ['install', '--user', 'INITools']
+    general_options, args_else = parser.parse_args(args)
+
+    # --version
+    if general_options.version:
+        sys.stdout.write(parser.version)  # type: ignore
+        sys.stdout.write(os.linesep)
+        sys.exit()
+
+    # pip || pip help -> print_help()
+    if not args_else or (args_else[0] == 'help' and len(args_else) == 1):
+        parser.print_help()
+        sys.exit()
+
+    # the subcommand name
+    cmd_name = args_else[0]
+
+    if cmd_name not in commands_dict:
+        guess = get_similar_commands(cmd_name)
+
+        msg = ['unknown command "{}"'.format(cmd_name)]
+        if guess:
+            msg.append('maybe you meant "{}"'.format(guess))
+
+        raise CommandError(' - '.join(msg))
+
+    # all the args without the subcommand
+    cmd_args = args[:]
+    cmd_args.remove(cmd_name)
+
+    return cmd_name, cmd_args

venv/Lib/site-packages/pip/_internal/cli/parser.py

@@ -0,0 +1,266 @@
+"""Base option parser setup"""
+
+# The following comment should be removed at some point in the future.
+# mypy: disallow-untyped-defs=False
+
+from __future__ import absolute_import
+
+import logging
+import optparse
+import sys
+import textwrap
+from distutils.util import strtobool
+
+from pip._vendor.six import string_types
+
+from pip._internal.cli.status_codes import UNKNOWN_ERROR
+from pip._internal.configuration import Configuration, ConfigurationError
+from pip._internal.utils.compat import get_terminal_size
+
+logger = logging.getLogger(__name__)
+
+
+class PrettyHelpFormatter(optparse.IndentedHelpFormatter):
+    """A prettier/less verbose help formatter for optparse."""
+
+    def __init__(self, *args, **kwargs):
+        # help position must be aligned with __init__.parseopts.description
+        kwargs['max_help_position'] = 30
+        kwargs['indent_increment'] = 1
+        kwargs['width'] = get_terminal_size()[0] - 2
+        optparse.IndentedHelpFormatter.__init__(self, *args, **kwargs)
+
+    def format_option_strings(self, option):
+        return self._format_option_strings(option)
+
+    def _format_option_strings(self, option, mvarfmt=' <{}>', optsep=', '):
+        """
+        Return a comma-separated list of option strings and metavars.
+
+        :param option:  tuple of (short opt, long opt), e.g: ('-f', '--format')
+        :param mvarfmt: metavar format string
+        :param optsep:  separator
+        """
+        opts = []
+
+        if option._short_opts:
+            opts.append(option._short_opts[0])
+        if option._long_opts:
+            opts.append(option._long_opts[0])
+        if len(opts) > 1:
+            opts.insert(1, optsep)
+
+        if option.takes_value():
+            metavar = option.metavar or option.dest.lower()
+            opts.append(mvarfmt.format(metavar.lower()))
+
+        return ''.join(opts)
+
+    def format_heading(self, heading):
+        if heading == 'Options':
+            return ''
+        return heading + ':\n'
+
+    def format_usage(self, usage):
+        """
+        Ensure there is only one newline between usage and the first heading
+        if there is no description.
+        """
+        msg = '\nUsage: {}\n'.format(
+            self.indent_lines(textwrap.dedent(usage), "  "))
+        return msg
+
+    def format_description(self, description):
+        # leave full control over description to us
+        if description:
+            if hasattr(self.parser, 'main'):
+                label = 'Commands'
+            else:
+                label = 'Description'
+            # some doc strings have initial newlines, some don't
+            description = description.lstrip('\n')
+            # some doc strings have final newlines and spaces, some don't
+            description = description.rstrip()
+            # dedent, then reindent
+            description = self.indent_lines(textwrap.dedent(description), "  ")
+            description = '{}:\n{}\n'.format(label, description)
+            return description
+        else:
+            return ''
+
+    def format_epilog(self, epilog):
+        # leave full control over epilog to us
+        if epilog:
+            return epilog
+        else:
+            return ''
+
+    def indent_lines(self, text, indent):
+        new_lines = [indent + line for line in text.split('\n')]
+        return "\n".join(new_lines)
+
+
+class UpdatingDefaultsHelpFormatter(PrettyHelpFormatter):
+    """Custom help formatter for use in ConfigOptionParser.
+
+    This is updates the defaults before expanding them, allowing
+    them to show up correctly in the help listing.
+    """
+
+    def expand_default(self, option):
+        if self.parser is not None:
+            self.parser._update_defaults(self.parser.defaults)
+        return optparse.IndentedHelpFormatter.expand_default(self, option)
+
+
+class CustomOptionParser(optparse.OptionParser):
+
+    def insert_option_group(self, idx, *args, **kwargs):
+        """Insert an OptionGroup at a given position."""
+        group = self.add_option_group(*args, **kwargs)
+
+        self.option_groups.pop()
+        self.option_groups.insert(idx, group)
+
+        return group
+
+    @property
+    def option_list_all(self):
+        """Get a list of all options, including those in option groups."""
+        res = self.option_list[:]
+        for i in self.option_groups:
+            res.extend(i.option_list)
+
+        return res
+
+
+class ConfigOptionParser(CustomOptionParser):
+    """Custom option parser which updates its defaults by checking the
+    configuration files and environmental variables"""
+
+    def __init__(self, *args, **kwargs):
+        self.name = kwargs.pop('name')
+
+        isolated = kwargs.pop("isolated", False)
+        self.config = Configuration(isolated)
+
+        assert self.name
+        optparse.OptionParser.__init__(self, *args, **kwargs)
+
+    def check_default(self, option, key, val):
+        try:
+            return option.check_value(key, val)
+        except optparse.OptionValueError as exc:
+            print("An error occurred during configuration: {}".format(exc))
+            sys.exit(3)
+
+    def _get_ordered_configuration_items(self):
+        # Configuration gives keys in an unordered manner. Order them.
+        override_order = ["global", self.name, ":env:"]
+
+        # Pool the options into different groups
+        section_items = {name: [] for name in override_order}
+        for section_key, val in self.config.items():
+            # ignore empty values
+            if not val:
+                logger.debug(
+                    "Ignoring configuration key '%s' as it's value is empty.",
+                    section_key
+                )
+                continue
+
+            section, key = section_key.split(".", 1)
+            if section in override_order:
+                section_items[section].append((key, val))
+
+        # Yield each group in their override order
+        for section in override_order:
+            for key, val in section_items[section]:
+                yield key, val
+
+    def _update_defaults(self, defaults):
+        """Updates the given defaults with values from the config files and
+        the environ. Does a little special handling for certain types of
+        options (lists)."""
+
+        # Accumulate complex default state.
+        self.values = optparse.Values(self.defaults)
+        late_eval = set()
+        # Then set the options with those values
+        for key, val in self._get_ordered_configuration_items():
+            # '--' because configuration supports only long names
+            option = self.get_option('--' + key)
+
+            # Ignore options not present in this parser. E.g. non-globals put
+            # in [global] by users that want them to apply to all applicable
+            # commands.
+            if option is None:
+                continue
+
+            if option.action in ('store_true', 'store_false', 'count'):
+                try:
+                    val = strtobool(val)
+                except ValueError:
+                    error_msg = invalid_config_error_message(
+                        option.action, key, val
+                    )
+                    self.error(error_msg)
+
+            elif option.action == 'append':
+                val = val.split()
+                val = [self.check_default(option, key, v) for v in val]
+            elif option.action == 'callback':
+                late_eval.add(option.dest)
+                opt_str = option.get_opt_string()
+                val = option.convert_value(opt_str, val)
+                # From take_action
+                args = option.callback_args or ()
+                kwargs = option.callback_kwargs or {}
+                option.callback(option, opt_str, val, self, *args, **kwargs)
+            else:
+                val = self.check_default(option, key, val)
+
+            defaults[option.dest] = val
+
+        for key in late_eval:
+            defaults[key] = getattr(self.values, key)
+        self.values = None
+        return defaults
+
+    def get_default_values(self):
+        """Overriding to make updating the defaults after instantiation of
+        the option parser possible, _update_defaults() does the dirty work."""
+        if not self.process_default_values:
+            # Old, pre-Optik 1.5 behaviour.
+            return optparse.Values(self.defaults)
+
+        # Load the configuration, or error out in case of an error
+        try:
+            self.config.load()
+        except ConfigurationError as err:
+            self.exit(UNKNOWN_ERROR, str(err))
+
+        defaults = self._update_defaults(self.defaults.copy())  # ours
+        for option in self._get_all_options():
+            default = defaults.get(option.dest)
+            if isinstance(default, string_types):
+                opt_str = option.get_opt_string()
+                defaults[option.dest] = option.check_value(opt_str, default)
+        return optparse.Values(defaults)
+
+    def error(self, msg):
+        self.print_usage(sys.stderr)
+        self.exit(UNKNOWN_ERROR, "{}\n".format(msg))
+
+
+def invalid_config_error_message(action, key, val):
+    """Returns a better error message when invalid configuration option
+    is provided."""
+    if action in ('store_true', 'store_false'):
+        return ("{0} is not a valid value for {1} option, "
+                "please specify a boolean value like yes/no, "
+                "true/false or 1/0 instead.").format(val, key)
+
+    return ("{0} is not a valid value for {1} option, "
+            "please specify a numerical value like 1/0 "
+            "instead.").format(val, key)

venv/Lib/site-packages/pip/_internal/cli/progress_bars.py

@@ -0,0 +1,280 @@
+from __future__ import division
+
+import itertools
+import sys
+from signal import SIGINT, default_int_handler, signal
+
+from pip._vendor import six
+from pip._vendor.progress.bar import Bar, FillingCirclesBar, IncrementalBar
+from pip._vendor.progress.spinner import Spinner
+
+from pip._internal.utils.compat import WINDOWS
+from pip._internal.utils.logging import get_indentation
+from pip._internal.utils.misc import format_size
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+
+if MYPY_CHECK_RUNNING:
+    from typing import Any, Dict, List
+
+try:
+    from pip._vendor import colorama
+# Lots of different errors can come from this, including SystemError and
+# ImportError.
+except Exception:
+    colorama = None
+
+
+def _select_progress_class(preferred, fallback):
+    # type: (Bar, Bar) -> Bar
+    encoding = getattr(preferred.file, "encoding", None)
+
+    # If we don't know what encoding this file is in, then we'll just assume
+    # that it doesn't support unicode and use the ASCII bar.
+    if not encoding:
+        return fallback
+
+    # Collect all of the possible characters we want to use with the preferred
+    # bar.
+    characters = [
+        getattr(preferred, "empty_fill", six.text_type()),
+        getattr(preferred, "fill", six.text_type()),
+    ]
+    characters += list(getattr(preferred, "phases", []))
+
+    # Try to decode the characters we're using for the bar using the encoding
+    # of the given file, if this works then we'll assume that we can use the
+    # fancier bar and if not we'll fall back to the plaintext bar.
+    try:
+        six.text_type().join(characters).encode(encoding)
+    except UnicodeEncodeError:
+        return fallback
+    else:
+        return preferred
+
+
+_BaseBar = _select_progress_class(IncrementalBar, Bar)  # type: Any
+
+
+class InterruptibleMixin(object):
+    """
+    Helper to ensure that self.finish() gets called on keyboard interrupt.
+
+    This allows downloads to be interrupted without leaving temporary state
+    (like hidden cursors) behind.
+
+    This class is similar to the progress library's existing SigIntMixin
+    helper, but as of version 1.2, that helper has the following problems:
+
+    1. It calls sys.exit().
+    2. It discards the existing SIGINT handler completely.
+    3. It leaves its own handler in place even after an uninterrupted finish,
+       which will have unexpected delayed effects if the user triggers an
+       unrelated keyboard interrupt some time after a progress-displaying
+       download has already completed, for example.
+    """
+
+    def __init__(self, *args, **kwargs):
+        # type: (List[Any], Dict[Any, Any]) -> None
+        """
+        Save the original SIGINT handler for later.
+        """
+        # https://github.com/python/mypy/issues/5887
+        super(InterruptibleMixin, self).__init__(  # type: ignore
+            *args,
+            **kwargs
+        )
+
+        self.original_handler = signal(SIGINT, self.handle_sigint)
+
+        # If signal() returns None, the previous handler was not installed from
+        # Python, and we cannot restore it. This probably should not happen,
+        # but if it does, we must restore something sensible instead, at least.
+        # The least bad option should be Python's default SIGINT handler, which
+        # just raises KeyboardInterrupt.
+        if self.original_handler is None:
+            self.original_handler = default_int_handler
+
+    def finish(self):
+        # type: () -> None
+        """
+        Restore the original SIGINT handler after finishing.
+
+        This should happen regardless of whether the progress display finishes
+        normally, or gets interrupted.
+        """
+        super(InterruptibleMixin, self).finish()  # type: ignore
+        signal(SIGINT, self.original_handler)
+
+    def handle_sigint(self, signum, frame):  # type: ignore
+        """
+        Call self.finish() before delegating to the original SIGINT handler.
+
+        This handler should only be in place while the progress display is
+        active.
+        """
+        self.finish()
+        self.original_handler(signum, frame)
+
+
+class SilentBar(Bar):
+
+    def update(self):
+        # type: () -> None
+        pass
+
+
+class BlueEmojiBar(IncrementalBar):
+
+    suffix = "%(percent)d%%"
+    bar_prefix = " "
+    bar_suffix = " "
+    phases = (u"\U0001F539", u"\U0001F537", u"\U0001F535")  # type: Any
+
+
+class DownloadProgressMixin(object):
+
+    def __init__(self, *args, **kwargs):
+        # type: (List[Any], Dict[Any, Any]) -> None
+        # https://github.com/python/mypy/issues/5887
+        super(DownloadProgressMixin, self).__init__(  # type: ignore
+            *args,
+            **kwargs
+        )
+        self.message = (" " * (
+            get_indentation() + 2
+        )) + self.message  # type: str
+
+    @property
+    def downloaded(self):
+        # type: () -> str
+        return format_size(self.index)  # type: ignore
+
+    @property
+    def download_speed(self):
+        # type: () -> str
+        # Avoid zero division errors...
+        if self.avg == 0.0:  # type: ignore
+            return "..."
+        return format_size(1 / self.avg) + "/s"  # type: ignore
+
+    @property
+    def pretty_eta(self):
+        # type: () -> str
+        if self.eta:  # type: ignore
+            return "eta {}".format(self.eta_td)  # type: ignore
+        return ""
+
+    def iter(self, it):  # type: ignore
+        for x in it:
+            yield x
+            # B305 is incorrectly raised here
+            # https://github.com/PyCQA/flake8-bugbear/issues/59
+            self.next(len(x))  # noqa: B305
+        self.finish()
+
+
+class WindowsMixin(object):
+
+    def __init__(self, *args, **kwargs):
+        # type: (List[Any], Dict[Any, Any]) -> None
+        # The Windows terminal does not support the hide/show cursor ANSI codes
+        # even with colorama. So we'll ensure that hide_cursor is False on
+        # Windows.
+        # This call needs to go before the super() call, so that hide_cursor
+        # is set in time. The base progress bar class writes the "hide cursor"
+        # code to the terminal in its init, so if we don't set this soon
+        # enough, we get a "hide" with no corresponding "show"...
+        if WINDOWS and self.hide_cursor:  # type: ignore
+            self.hide_cursor = False
+
+        # https://github.com/python/mypy/issues/5887
+        super(WindowsMixin, self).__init__(*args, **kwargs)  # type: ignore
+
+        # Check if we are running on Windows and we have the colorama module,
+        # if we do then wrap our file with it.
+        if WINDOWS and colorama:
+            self.file = colorama.AnsiToWin32(self.file)  # type: ignore
+            # The progress code expects to be able to call self.file.isatty()
+            # but the colorama.AnsiToWin32() object doesn't have that, so we'll
+            # add it.
+            self.file.isatty = lambda: self.file.wrapped.isatty()
+            # The progress code expects to be able to call self.file.flush()
+            # but the colorama.AnsiToWin32() object doesn't have that, so we'll
+            # add it.
+            self.file.flush = lambda: self.file.wrapped.flush()
+
+
+class BaseDownloadProgressBar(WindowsMixin, InterruptibleMixin,
+                              DownloadProgressMixin):
+
+    file = sys.stdout
+    message = "%(percent)d%%"
+    suffix = "%(downloaded)s %(download_speed)s %(pretty_eta)s"
+
+
+class DefaultDownloadProgressBar(BaseDownloadProgressBar,
+                                 _BaseBar):
+    pass
+
+
+class DownloadSilentBar(BaseDownloadProgressBar, SilentBar):
+    pass
+
+
+class DownloadBar(BaseDownloadProgressBar,
+                  Bar):
+    pass
+
+
+class DownloadFillingCirclesBar(BaseDownloadProgressBar,
+                                FillingCirclesBar):
+    pass
+
+
+class DownloadBlueEmojiProgressBar(BaseDownloadProgressBar,
+                                   BlueEmojiBar):
+    pass
+
+
+class DownloadProgressSpinner(WindowsMixin, InterruptibleMixin,
+                              DownloadProgressMixin, Spinner):
+
+    file = sys.stdout
+    suffix = "%(downloaded)s %(download_speed)s"
+
+    def next_phase(self):
+        # type: () -> str
+        if not hasattr(self, "_phaser"):
+            self._phaser = itertools.cycle(self.phases)
+        return next(self._phaser)
+
+    def update(self):
+        # type: () -> None
+        message = self.message % self
+        phase = self.next_phase()
+        suffix = self.suffix % self
+        line = ''.join([
+            message,
+            " " if message else "",
+            phase,
+            " " if suffix else "",
+            suffix,
+        ])
+
+        self.writeln(line)
+
+
+BAR_TYPES = {
+    "off": (DownloadSilentBar, DownloadSilentBar),
+    "on": (DefaultDownloadProgressBar, DownloadProgressSpinner),
+    "ascii": (DownloadBar, DownloadProgressSpinner),
+    "pretty": (DownloadFillingCirclesBar, DownloadProgressSpinner),
+    "emoji": (DownloadBlueEmojiProgressBar, DownloadProgressSpinner)
+}
+
+
+def DownloadProgressProvider(progress_bar, max=None):  # type: ignore
+    if max is None or max == 0:
+        return BAR_TYPES[progress_bar][1]().iter
+    else:
+        return BAR_TYPES[progress_bar][0](max=max).iter

venv/Lib/site-packages/pip/_internal/cli/req_command.py

@@ -0,0 +1,402 @@
+"""Contains the Command base classes that depend on PipSession.
+
+The classes in this module are in a separate module so the commands not
+needing download / PackageFinder capability don't unnecessarily import the
+PackageFinder machinery and all its vendored dependencies, etc.
+"""
+
+import logging
+import os
+from functools import partial
+
+from pip._internal.cli import cmdoptions
+from pip._internal.cli.base_command import Command
+from pip._internal.cli.command_context import CommandContextMixIn
+from pip._internal.exceptions import CommandError, PreviousBuildDirError
+from pip._internal.index.collector import LinkCollector
+from pip._internal.index.package_finder import PackageFinder
+from pip._internal.models.selection_prefs import SelectionPreferences
+from pip._internal.network.download import Downloader
+from pip._internal.network.session import PipSession
+from pip._internal.operations.prepare import RequirementPreparer
+from pip._internal.req.constructors import (
+    install_req_from_editable,
+    install_req_from_line,
+    install_req_from_parsed_requirement,
+    install_req_from_req_string,
+)
+from pip._internal.req.req_file import parse_requirements
+from pip._internal.self_outdated_check import pip_self_version_check
+from pip._internal.utils.temp_dir import tempdir_kinds
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+
+if MYPY_CHECK_RUNNING:
+    from optparse import Values
+    from typing import Any, List, Optional, Tuple
+
+    from pip._internal.cache import WheelCache
+    from pip._internal.models.target_python import TargetPython
+    from pip._internal.req.req_install import InstallRequirement
+    from pip._internal.req.req_tracker import RequirementTracker
+    from pip._internal.resolution.base import BaseResolver
+    from pip._internal.utils.temp_dir import (
+        TempDirectory,
+        TempDirectoryTypeRegistry,
+    )
+
+
+logger = logging.getLogger(__name__)
+
+
+class SessionCommandMixin(CommandContextMixIn):
+
+    """
+    A class mixin for command classes needing _build_session().
+    """
+    def __init__(self):
+        # type: () -> None
+        super(SessionCommandMixin, self).__init__()
+        self._session = None  # Optional[PipSession]
+
+    @classmethod
+    def _get_index_urls(cls, options):
+        # type: (Values) -> Optional[List[str]]
+        """Return a list of index urls from user-provided options."""
+        index_urls = []
+        if not getattr(options, "no_index", False):
+            url = getattr(options, "index_url", None)
+            if url:
+                index_urls.append(url)
+        urls = getattr(options, "extra_index_urls", None)
+        if urls:
+            index_urls.extend(urls)
+        # Return None rather than an empty list
+        return index_urls or None
+
+    def get_default_session(self, options):
+        # type: (Values) -> PipSession
+        """Get a default-managed session."""
+        if self._session is None:
+            self._session = self.enter_context(self._build_session(options))
+            # there's no type annotation on requests.Session, so it's
+            # automatically ContextManager[Any] and self._session becomes Any,
+            # then https://github.com/python/mypy/issues/7696 kicks in
+            assert self._session is not None
+        return self._session
+
+    def _build_session(self, options, retries=None, timeout=None):
+        # type: (Values, Optional[int], Optional[int]) -> PipSession
+        assert not options.cache_dir or os.path.isabs(options.cache_dir)
+        session = PipSession(
+            cache=(
+                os.path.join(options.cache_dir, "http")
+                if options.cache_dir else None
+            ),
+            retries=retries if retries is not None else options.retries,
+            trusted_hosts=options.trusted_hosts,
+            index_urls=self._get_index_urls(options),
+        )
+
+        # Handle custom ca-bundles from the user
+        if options.cert:
+            session.verify = options.cert
+
+        # Handle SSL client certificate
+        if options.client_cert:
+            session.cert = options.client_cert
+
+        # Handle timeouts
+        if options.timeout or timeout:
+            session.timeout = (
+                timeout if timeout is not None else options.timeout
+            )
+
+        # Handle configured proxies
+        if options.proxy:
+            session.proxies = {
+                "http": options.proxy,
+                "https": options.proxy,
+            }
+
+        # Determine if we can prompt the user for authentication or not
+        session.auth.prompting = not options.no_input
+
+        return session
+
+
+class IndexGroupCommand(Command, SessionCommandMixin):
+
+    """
+    Abstract base class for commands with the index_group options.
+
+    This also corresponds to the commands that permit the pip version check.
+    """
+
+    def handle_pip_version_check(self, options):
+        # type: (Values) -> None
+        """
+        Do the pip version check if not disabled.
+
+        This overrides the default behavior of not doing the check.
+        """
+        # Make sure the index_group options are present.
+        assert hasattr(options, 'no_index')
+
+        if options.disable_pip_version_check or options.no_index:
+            return
+
+        # Otherwise, check if we're using the latest version of pip available.
+        session = self._build_session(
+            options,
+            retries=0,
+            timeout=min(5, options.timeout)
+        )
+        with session:
+            pip_self_version_check(session, options)
+
+
+KEEPABLE_TEMPDIR_TYPES = [
+    tempdir_kinds.BUILD_ENV,
+    tempdir_kinds.EPHEM_WHEEL_CACHE,
+    tempdir_kinds.REQ_BUILD,
+]
+
+
+def with_cleanup(func):
+    # type: (Any) -> Any
+    """Decorator for common logic related to managing temporary
+    directories.
+    """
+    def configure_tempdir_registry(registry):
+        # type: (TempDirectoryTypeRegistry) -> None
+        for t in KEEPABLE_TEMPDIR_TYPES:
+            registry.set_delete(t, False)
+
+    def wrapper(self, options, args):
+        # type: (RequirementCommand, Values, List[Any]) -> Optional[int]
+        assert self.tempdir_registry is not None
+        if options.no_clean:
+            configure_tempdir_registry(self.tempdir_registry)
+
+        try:
+            return func(self, options, args)
+        except PreviousBuildDirError:
+            # This kind of conflict can occur when the user passes an explicit
+            # build directory with a pre-existing folder. In that case we do
+            # not want to accidentally remove it.
+            configure_tempdir_registry(self.tempdir_registry)
+            raise
+
+    return wrapper
+
+
+class RequirementCommand(IndexGroupCommand):
+
+    def __init__(self, *args, **kw):
+        # type: (Any, Any) -> None
+        super(RequirementCommand, self).__init__(*args, **kw)
+
+        self.cmd_opts.add_option(cmdoptions.no_clean())
+
+    @staticmethod
+    def make_requirement_preparer(
+        temp_build_dir,           # type: TempDirectory
+        options,                  # type: Values
+        req_tracker,              # type: RequirementTracker
+        session,                  # type: PipSession
+        finder,                   # type: PackageFinder
+        use_user_site,            # type: bool
+        download_dir=None,        # type: str
+        wheel_download_dir=None,  # type: str
+    ):
+        # type: (...) -> RequirementPreparer
+        """
+        Create a RequirementPreparer instance for the given parameters.
+        """
+        downloader = Downloader(session, progress_bar=options.progress_bar)
+
+        temp_build_dir_path = temp_build_dir.path
+        assert temp_build_dir_path is not None
+
+        return RequirementPreparer(
+            build_dir=temp_build_dir_path,
+            src_dir=options.src_dir,
+            download_dir=download_dir,
+            wheel_download_dir=wheel_download_dir,
+            build_isolation=options.build_isolation,
+            req_tracker=req_tracker,
+            downloader=downloader,
+            finder=finder,
+            require_hashes=options.require_hashes,
+            use_user_site=use_user_site,
+        )
+
+    @staticmethod
+    def make_resolver(
+        preparer,                            # type: RequirementPreparer
+        finder,                              # type: PackageFinder
+        options,                             # type: Values
+        wheel_cache=None,                    # type: Optional[WheelCache]
+        use_user_site=False,                 # type: bool
+        ignore_installed=True,               # type: bool
+        ignore_requires_python=False,        # type: bool
+        force_reinstall=False,               # type: bool
+        upgrade_strategy="to-satisfy-only",  # type: str
+        use_pep517=None,                     # type: Optional[bool]
+        py_version_info=None            # type: Optional[Tuple[int, ...]]
+    ):
+        # type: (...) -> BaseResolver
+        """
+        Create a Resolver instance for the given parameters.
+        """
+        make_install_req = partial(
+            install_req_from_req_string,
+            isolated=options.isolated_mode,
+            use_pep517=use_pep517,
+        )
+        # The long import name and duplicated invocation is needed to convince
+        # Mypy into correctly typechecking. Otherwise it would complain the
+        # "Resolver" class being redefined.
+        if '2020-resolver' in options.features_enabled:
+            import pip._internal.resolution.resolvelib.resolver
+            return pip._internal.resolution.resolvelib.resolver.Resolver(
+                preparer=preparer,
+                finder=finder,
+                wheel_cache=wheel_cache,
+                make_install_req=make_install_req,
+                use_user_site=use_user_site,
+                ignore_dependencies=options.ignore_dependencies,
+                ignore_installed=ignore_installed,
+                ignore_requires_python=ignore_requires_python,
+                force_reinstall=force_reinstall,
+                upgrade_strategy=upgrade_strategy,
+                py_version_info=py_version_info,
+                lazy_wheel='fast-deps' in options.features_enabled,
+            )
+        import pip._internal.resolution.legacy.resolver
+        return pip._internal.resolution.legacy.resolver.Resolver(
+            preparer=preparer,
+            finder=finder,
+            wheel_cache=wheel_cache,
+            make_install_req=make_install_req,
+            use_user_site=use_user_site,
+            ignore_dependencies=options.ignore_dependencies,
+            ignore_installed=ignore_installed,
+            ignore_requires_python=ignore_requires_python,
+            force_reinstall=force_reinstall,
+            upgrade_strategy=upgrade_strategy,
+            py_version_info=py_version_info,
+        )
+
+    def get_requirements(
+        self,
+        args,             # type: List[str]
+        options,          # type: Values
+        finder,           # type: PackageFinder
+        session,          # type: PipSession
+    ):
+        # type: (...) -> List[InstallRequirement]
+        """
+        Parse command-line arguments into the corresponding requirements.
+        """
+        requirements = []  # type: List[InstallRequirement]
+        for filename in options.constraints:
+            for parsed_req in parse_requirements(
+                    filename,
+                    constraint=True, finder=finder, options=options,
+                    session=session):
+                req_to_add = install_req_from_parsed_requirement(
+                    parsed_req,
+                    isolated=options.isolated_mode,
+                    user_supplied=False,
+                )
+                requirements.append(req_to_add)
+
+        for req in args:
+            req_to_add = install_req_from_line(
+                req, None, isolated=options.isolated_mode,
+                use_pep517=options.use_pep517,
+                user_supplied=True,
+            )
+            requirements.append(req_to_add)
+
+        for req in options.editables:
+            req_to_add = install_req_from_editable(
+                req,
+                user_supplied=True,
+                isolated=options.isolated_mode,
+                use_pep517=options.use_pep517,
+            )
+            requirements.append(req_to_add)
+
+        # NOTE: options.require_hashes may be set if --require-hashes is True
+        for filename in options.requirements:
+            for parsed_req in parse_requirements(
+                    filename,
+                    finder=finder, options=options, session=session):
+                req_to_add = install_req_from_parsed_requirement(
+                    parsed_req,
+                    isolated=options.isolated_mode,
+                    use_pep517=options.use_pep517,
+                    user_supplied=True,
+                )
+                requirements.append(req_to_add)
+
+        # If any requirement has hash options, enable hash checking.
+        if any(req.has_hash_options for req in requirements):
+            options.require_hashes = True
+
+        if not (args or options.editables or options.requirements):
+            opts = {'name': self.name}
+            if options.find_links:
+                raise CommandError(
+                    'You must give at least one requirement to {name} '
+                    '(maybe you meant "pip {name} {links}"?)'.format(
+                        **dict(opts, links=' '.join(options.find_links))))
+            else:
+                raise CommandError(
+                    'You must give at least one requirement to {name} '
+                    '(see "pip help {name}")'.format(**opts))
+
+        return requirements
+
+    @staticmethod
+    def trace_basic_info(finder):
+        # type: (PackageFinder) -> None
+        """
+        Trace basic information about the provided objects.
+        """
+        # Display where finder is looking for packages
+        search_scope = finder.search_scope
+        locations = search_scope.get_formatted_locations()
+        if locations:
+            logger.info(locations)
+
+    def _build_package_finder(
+        self,
+        options,               # type: Values
+        session,               # type: PipSession
+        target_python=None,    # type: Optional[TargetPython]
+        ignore_requires_python=None,  # type: Optional[bool]
+    ):
+        # type: (...) -> PackageFinder
+        """
+        Create a package finder appropriate to this requirement command.
+
+        :param ignore_requires_python: Whether to ignore incompatible
+            "Requires-Python" values in links. Defaults to False.
+        """
+        link_collector = LinkCollector.create(session, options=options)
+        selection_prefs = SelectionPreferences(
+            allow_yanked=True,
+            format_control=options.format_control,
+            allow_all_prereleases=options.pre,
+            prefer_binary=options.prefer_binary,
+            ignore_requires_python=ignore_requires_python,
+        )
+
+        return PackageFinder.create(
+            link_collector=link_collector,
+            selection_prefs=selection_prefs,
+            target_python=target_python,
+        )

venv/Lib/site-packages/pip/_internal/cli/spinners.py

@@ -0,0 +1,173 @@
+from __future__ import absolute_import, division
+
+import contextlib
+import itertools
+import logging
+import sys
+import time
+
+from pip._vendor.progress import HIDE_CURSOR, SHOW_CURSOR
+
+from pip._internal.utils.compat import WINDOWS
+from pip._internal.utils.logging import get_indentation
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+
+if MYPY_CHECK_RUNNING:
+    from typing import Iterator, IO
+
+logger = logging.getLogger(__name__)
+
+
+class SpinnerInterface(object):
+    def spin(self):
+        # type: () -> None
+        raise NotImplementedError()
+
+    def finish(self, final_status):
+        # type: (str) -> None
+        raise NotImplementedError()
+
+
+class InteractiveSpinner(SpinnerInterface):
+    def __init__(self, message, file=None, spin_chars="-\\|/",
+                 # Empirically, 8 updates/second looks nice
+                 min_update_interval_seconds=0.125):
+        # type: (str, IO[str], str, float) -> None
+        self._message = message
+        if file is None:
+            file = sys.stdout
+        self._file = file
+        self._rate_limiter = RateLimiter(min_update_interval_seconds)
+        self._finished = False
+
+        self._spin_cycle = itertools.cycle(spin_chars)
+
+        self._file.write(" " * get_indentation() + self._message + " ... ")
+        self._width = 0
+
+    def _write(self, status):
+        # type: (str) -> None
+        assert not self._finished
+        # Erase what we wrote before by backspacing to the beginning, writing
+        # spaces to overwrite the old text, and then backspacing again
+        backup = "\b" * self._width
+        self._file.write(backup + " " * self._width + backup)
+        # Now we have a blank slate to add our status
+        self._file.write(status)
+        self._width = len(status)
+        self._file.flush()
+        self._rate_limiter.reset()
+
+    def spin(self):
+        # type: () -> None
+        if self._finished:
+            return
+        if not self._rate_limiter.ready():
+            return
+        self._write(next(self._spin_cycle))
+
+    def finish(self, final_status):
+        # type: (str) -> None
+        if self._finished:
+            return
+        self._write(final_status)
+        self._file.write("\n")
+        self._file.flush()
+        self._finished = True
+
+
+# Used for dumb terminals, non-interactive installs (no tty), etc.
+# We still print updates occasionally (once every 60 seconds by default) to
+# act as a keep-alive for systems like Travis-CI that take lack-of-output as
+# an indication that a task has frozen.
+class NonInteractiveSpinner(SpinnerInterface):
+    def __init__(self, message, min_update_interval_seconds=60):
+        # type: (str, float) -> None
+        self._message = message
+        self._finished = False
+        self._rate_limiter = RateLimiter(min_update_interval_seconds)
+        self._update("started")
+
+    def _update(self, status):
+        # type: (str) -> None
+        assert not self._finished
+        self._rate_limiter.reset()
+        logger.info("%s: %s", self._message, status)
+
+    def spin(self):
+        # type: () -> None
+        if self._finished:
+            return
+        if not self._rate_limiter.ready():
+            return
+        self._update("still running...")
+
+    def finish(self, final_status):
+        # type: (str) -> None
+        if self._finished:
+            return
+        self._update(
+            "finished with status '{final_status}'".format(**locals()))
+        self._finished = True
+
+
+class RateLimiter(object):
+    def __init__(self, min_update_interval_seconds):
+        # type: (float) -> None
+        self._min_update_interval_seconds = min_update_interval_seconds
+        self._last_update = 0  # type: float
+
+    def ready(self):
+        # type: () -> bool
+        now = time.time()
+        delta = now - self._last_update
+        return delta >= self._min_update_interval_seconds
+
+    def reset(self):
+        # type: () -> None
+        self._last_update = time.time()
+
+
+@contextlib.contextmanager
+def open_spinner(message):
+    # type: (str) -> Iterator[SpinnerInterface]
+    # Interactive spinner goes directly to sys.stdout rather than being routed
+    # through the logging system, but it acts like it has level INFO,
+    # i.e. it's only displayed if we're at level INFO or better.
+    # Non-interactive spinner goes through the logging system, so it is always
+    # in sync with logging configuration.
+    if sys.stdout.isatty() and logger.getEffectiveLevel() <= logging.INFO:
+        spinner = InteractiveSpinner(message)  # type: SpinnerInterface
+    else:
+        spinner = NonInteractiveSpinner(message)
+    try:
+        with hidden_cursor(sys.stdout):
+            yield spinner
+    except KeyboardInterrupt:
+        spinner.finish("canceled")
+        raise
+    except Exception:
+        spinner.finish("error")
+        raise
+    else:
+        spinner.finish("done")
+
+
+@contextlib.contextmanager
+def hidden_cursor(file):
+    # type: (IO[str]) -> Iterator[None]
+    # The Windows terminal does not support the hide/show cursor ANSI codes,
+    # even via colorama. So don't even try.
+    if WINDOWS:
+        yield
+    # We don't want to clutter the output with control characters if we're
+    # writing to a file, or if the user is running with --quiet.
+    # See https://github.com/pypa/pip/issues/3418
+    elif not file.isatty() or logger.getEffectiveLevel() > logging.INFO:
+        yield
+    else:
+        file.write(HIDE_CURSOR)
+        try:
+            yield
+        finally:
+            file.write(SHOW_CURSOR)

venv/Lib/site-packages/pip/_internal/cli/status_codes.py

@@ -0,0 +1,8 @@
+from __future__ import absolute_import
+
+SUCCESS = 0
+ERROR = 1
+UNKNOWN_ERROR = 2
+VIRTUALENV_NOT_FOUND = 3
+PREVIOUS_BUILD_DIR_ERROR = 4
+NO_MATCHES_FOUND = 23

venv/Lib/site-packages/pip/_internal/commands/cache.py

@@ -0,0 +1,182 @@
+from __future__ import absolute_import
+
+import logging
+import os
+import textwrap
+
+import pip._internal.utils.filesystem as filesystem
+from pip._internal.cli.base_command import Command
+from pip._internal.cli.status_codes import ERROR, SUCCESS
+from pip._internal.exceptions import CommandError, PipError
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+
+if MYPY_CHECK_RUNNING:
+    from optparse import Values
+    from typing import Any, List
+
+
+logger = logging.getLogger(__name__)
+
+
+class CacheCommand(Command):
+    """
+    Inspect and manage pip's wheel cache.
+
+    Subcommands:
+
+    - dir: Show the cache directory.
+    - info: Show information about the cache.
+    - list: List filenames of packages stored in the cache.
+    - remove: Remove one or more package from the cache.
+    - purge: Remove all items from the cache.
+
+    ``<pattern>`` can be a glob expression or a package name.
+    """
+
+    ignore_require_venv = True
+    usage = """
+        %prog dir
+        %prog info
+        %prog list [<pattern>]
+        %prog remove <pattern>
+        %prog purge
+    """
+
+    def run(self, options, args):
+        # type: (Values, List[Any]) -> int
+        handlers = {
+            "dir": self.get_cache_dir,
+            "info": self.get_cache_info,
+            "list": self.list_cache_items,
+            "remove": self.remove_cache_items,
+            "purge": self.purge_cache,
+        }
+
+        if not options.cache_dir:
+            logger.error("pip cache commands can not "
+                         "function since cache is disabled.")
+            return ERROR
+
+        # Determine action
+        if not args or args[0] not in handlers:
+            logger.error(
+                "Need an action (%s) to perform.",
+                ", ".join(sorted(handlers)),
+            )
+            return ERROR
+
+        action = args[0]
+
+        # Error handling happens here, not in the action-handlers.
+        try:
+            handlers[action](options, args[1:])
+        except PipError as e:
+            logger.error(e.args[0])
+            return ERROR
+
+        return SUCCESS
+
+    def get_cache_dir(self, options, args):
+        # type: (Values, List[Any]) -> None
+        if args:
+            raise CommandError('Too many arguments')
+
+        logger.info(options.cache_dir)
+
+    def get_cache_info(self, options, args):
+        # type: (Values, List[Any]) -> None
+        if args:
+            raise CommandError('Too many arguments')
+
+        num_packages = len(self._find_wheels(options, '*'))
+
+        cache_location = self._wheels_cache_dir(options)
+        cache_size = filesystem.format_directory_size(cache_location)
+
+        message = textwrap.dedent("""
+            Location: {location}
+            Size: {size}
+            Number of wheels: {package_count}
+        """).format(
+            location=cache_location,
+            package_count=num_packages,
+            size=cache_size,
+        ).strip()
+
+        logger.info(message)
+
+    def list_cache_items(self, options, args):
+        # type: (Values, List[Any]) -> None
+        if len(args) > 1:
+            raise CommandError('Too many arguments')
+
+        if args:
+            pattern = args[0]
+        else:
+            pattern = '*'
+
+        files = self._find_wheels(options, pattern)
+
+        if not files:
+            logger.info('Nothing cached.')
+            return
+
+        results = []
+        for filename in files:
+            wheel = os.path.basename(filename)
+            size = filesystem.format_file_size(filename)
+            results.append(' - {} ({})'.format(wheel, size))
+        logger.info('Cache contents:\n')
+        logger.info('\n'.join(sorted(results)))
+
+    def remove_cache_items(self, options, args):
+        # type: (Values, List[Any]) -> None
+        if len(args) > 1:
+            raise CommandError('Too many arguments')
+
+        if not args:
+            raise CommandError('Please provide a pattern')
+
+        files = self._find_wheels(options, args[0])
+        if not files:
+            raise CommandError('No matching packages')
+
+        for filename in files:
+            os.unlink(filename)
+            logger.debug('Removed %s', filename)
+        logger.info('Files removed: %s', len(files))
+
+    def purge_cache(self, options, args):
+        # type: (Values, List[Any]) -> None
+        if args:
+            raise CommandError('Too many arguments')
+
+        return self.remove_cache_items(options, ['*'])
+
+    def _wheels_cache_dir(self, options):
+        # type: (Values) -> str
+        return os.path.join(options.cache_dir, 'wheels')
+
+    def _find_wheels(self, options, pattern):
+        # type: (Values, str) -> List[str]
+        wheel_dir = self._wheels_cache_dir(options)
+
+        # The wheel filename format, as specified in PEP 427, is:
+        #     {distribution}-{version}(-{build})?-{python}-{abi}-{platform}.whl
+        #
+        # Additionally, non-alphanumeric values in the distribution are
+        # normalized to underscores (_), meaning hyphens can never occur
+        # before `-{version}`.
+        #
+        # Given that information:
+        # - If the pattern we're given contains a hyphen (-), the user is
+        #   providing at least the version. Thus, we can just append `*.whl`
+        #   to match the rest of it.
+        # - If the pattern we're given doesn't contain a hyphen (-), the
+        #   user is only providing the name. Thus, we append `-*.whl` to
+        #   match the hyphen before the version, followed by anything else.
+        #
+        # PEP 427: https://www.python.org/dev/peps/pep-0427/
+        pattern = pattern + ("*.whl" if "-" in pattern else "-*.whl")
+
+        return filesystem.find_files(wheel_dir, pattern)

venv/Lib/site-packages/pip/_internal/commands/debug.py

@@ -0,0 +1,229 @@
+from __future__ import absolute_import
+
+import locale
+import logging
+import os
+import sys
+
+import pip._vendor
+from pip._vendor import pkg_resources
+from pip._vendor.certifi import where
+
+from pip import __file__ as pip_location
+from pip._internal.cli import cmdoptions
+from pip._internal.cli.base_command import Command
+from pip._internal.cli.cmdoptions import make_target_python
+from pip._internal.cli.status_codes import SUCCESS
+from pip._internal.utils.logging import indent_log
+from pip._internal.utils.misc import get_pip_version
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+
+if MYPY_CHECK_RUNNING:
+    from types import ModuleType
+    from typing import List, Optional, Dict
+    from optparse import Values
+    from pip._internal.configuration import Configuration
+
+logger = logging.getLogger(__name__)
+
+
+def show_value(name, value):
+    # type: (str, Optional[str]) -> None
+    logger.info('%s: %s', name, value)
+
+
+def show_sys_implementation():
+    # type: () -> None
+    logger.info('sys.implementation:')
+    if hasattr(sys, 'implementation'):
+        implementation = sys.implementation  # type: ignore
+        implementation_name = implementation.name
+    else:
+        implementation_name = ''
+
+    with indent_log():
+        show_value('name', implementation_name)
+
+
+def create_vendor_txt_map():
+    # type: () -> Dict[str, str]
+    vendor_txt_path = os.path.join(
+        os.path.dirname(pip_location),
+        '_vendor',
+        'vendor.txt'
+    )
+
+    with open(vendor_txt_path) as f:
+        # Purge non version specifying lines.
+        # Also, remove any space prefix or suffixes (including comments).
+        lines = [line.strip().split(' ', 1)[0]
+                 for line in f.readlines() if '==' in line]
+
+    # Transform into "module" -> version dict.
+    return dict(line.split('==', 1) for line in lines)  # type: ignore
+
+
+def get_module_from_module_name(module_name):
+    # type: (str) -> ModuleType
+    # Module name can be uppercase in vendor.txt for some reason...
+    module_name = module_name.lower()
+    # PATCH: setuptools is actually only pkg_resources.
+    if module_name == 'setuptools':
+        module_name = 'pkg_resources'
+
+    __import__(
+        'pip._vendor.{}'.format(module_name),
+        globals(),
+        locals(),
+        level=0
+    )
+    return getattr(pip._vendor, module_name)
+
+
+def get_vendor_version_from_module(module_name):
+    # type: (str) -> Optional[str]
+    module = get_module_from_module_name(module_name)
+    version = getattr(module, '__version__', None)
+
+    if not version:
+        # Try to find version in debundled module info
+        # The type for module.__file__ is Optional[str] in
+        # Python 2, and str in Python 3. The type: ignore is
+        # added to account for Python 2, instead of a cast
+        # and should be removed once we drop Python 2 support
+        pkg_set = pkg_resources.WorkingSet(
+            [os.path.dirname(module.__file__)]  # type: ignore
+        )
+        package = pkg_set.find(pkg_resources.Requirement.parse(module_name))
+        version = getattr(package, 'version', None)
+
+    return version
+
+
+def show_actual_vendor_versions(vendor_txt_versions):
+    # type: (Dict[str, str]) -> None
+    """Log the actual version and print extra info if there is
+    a conflict or if the actual version could not be imported.
+    """
+    for module_name, expected_version in vendor_txt_versions.items():
+        extra_message = ''
+        actual_version = get_vendor_version_from_module(module_name)
+        if not actual_version:
+            extra_message = ' (Unable to locate actual module version, using'\
+                            ' vendor.txt specified version)'
+            actual_version = expected_version
+        elif actual_version != expected_version:
+            extra_message = ' (CONFLICT: vendor.txt suggests version should'\
+                            ' be {})'.format(expected_version)
+        logger.info('%s==%s%s', module_name, actual_version, extra_message)
+
+
+def show_vendor_versions():
+    # type: () -> None
+    logger.info('vendored library versions:')
+
+    vendor_txt_versions = create_vendor_txt_map()
+    with indent_log():
+        show_actual_vendor_versions(vendor_txt_versions)
+
+
+def show_tags(options):
+    # type: (Values) -> None
+    tag_limit = 10
+
+    target_python = make_target_python(options)
+    tags = target_python.get_tags()
+
+    # Display the target options that were explicitly provided.
+    formatted_target = target_python.format_given()
+    suffix = ''
+    if formatted_target:
+        suffix = ' (target: {})'.format(formatted_target)
+
+    msg = 'Compatible tags: {}{}'.format(len(tags), suffix)
+    logger.info(msg)
+
+    if options.verbose < 1 and len(tags) > tag_limit:
+        tags_limited = True
+        tags = tags[:tag_limit]
+    else:
+        tags_limited = False
+
+    with indent_log():
+        for tag in tags:
+            logger.info(str(tag))
+
+        if tags_limited:
+            msg = (
+                '...\n'
+                '[First {tag_limit} tags shown. Pass --verbose to show all.]'
+            ).format(tag_limit=tag_limit)
+            logger.info(msg)
+
+
+def ca_bundle_info(config):
+    # type: (Configuration) -> str
+    levels = set()
+    for key, _ in config.items():
+        levels.add(key.split('.')[0])
+
+    if not levels:
+        return "Not specified"
+
+    levels_that_override_global = ['install', 'wheel', 'download']
+    global_overriding_level = [
+        level for level in levels if level in levels_that_override_global
+    ]
+    if not global_overriding_level:
+        return 'global'
+
+    if 'global' in levels:
+        levels.remove('global')
+    return ", ".join(levels)
+
+
+class DebugCommand(Command):
+    """
+    Display debug information.
+    """
+
+    usage = """
+      %prog <options>"""
+    ignore_require_venv = True
+
+    def add_options(self):
+        # type: () -> None
+        cmdoptions.add_target_python_options(self.cmd_opts)
+        self.parser.insert_option_group(0, self.cmd_opts)
+        self.parser.config.load()
+
+    def run(self, options, args):
+        # type: (Values, List[str]) -> int
+        logger.warning(
+            "This command is only meant for debugging. "
+            "Do not use this with automation for parsing and getting these "
+            "details, since the output and options of this command may "
+            "change without notice."
+        )
+        show_value('pip version', get_pip_version())
+        show_value('sys.version', sys.version)
+        show_value('sys.executable', sys.executable)
+        show_value('sys.getdefaultencoding', sys.getdefaultencoding())
+        show_value('sys.getfilesystemencoding', sys.getfilesystemencoding())
+        show_value(
+            'locale.getpreferredencoding', locale.getpreferredencoding(),
+        )
+        show_value('sys.platform', sys.platform)
+        show_sys_implementation()
+
+        show_value("'cert' config value", ca_bundle_info(self.parser.config))
+        show_value("REQUESTS_CA_BUNDLE", os.environ.get('REQUESTS_CA_BUNDLE'))
+        show_value("CURL_CA_BUNDLE", os.environ.get('CURL_CA_BUNDLE'))
+        show_value("pip._vendor.certifi.where()", where())
+        show_value("pip._vendor.DEBUNDLED", pip._vendor.DEBUNDLED)
+
+        show_vendor_versions()
+
+        show_tags(options)
+
+        return SUCCESS

venv/Lib/site-packages/pip/_internal/distributions/__init__.py

@@ -0,0 +1,24 @@
+from pip._internal.distributions.sdist import SourceDistribution
+from pip._internal.distributions.wheel import WheelDistribution
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+
+if MYPY_CHECK_RUNNING:
+    from pip._internal.distributions.base import AbstractDistribution
+    from pip._internal.req.req_install import InstallRequirement
+
+
+def make_distribution_for_install_requirement(install_req):
+    # type: (InstallRequirement) -> AbstractDistribution
+    """Returns a Distribution for the given InstallRequirement
+    """
+    # Editable requirements will always be source distributions. They use the
+    # legacy logic until we create a modern standard for them.
+    if install_req.editable:
+        return SourceDistribution(install_req)
+
+    # If it's a wheel, it's a WheelDistribution
+    if install_req.is_wheel:
+        return WheelDistribution(install_req)
+
+    # Otherwise, a SourceDistribution
+    return SourceDistribution(install_req)

venv/Lib/site-packages/pip/_internal/distributions/base.py

@@ -0,0 +1,45 @@
+import abc
+
+from pip._vendor.six import add_metaclass
+
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+
+if MYPY_CHECK_RUNNING:
+    from typing import Optional
+
+    from pip._vendor.pkg_resources import Distribution
+    from pip._internal.req import InstallRequirement
+    from pip._internal.index.package_finder import PackageFinder
+
+
+@add_metaclass(abc.ABCMeta)
+class AbstractDistribution(object):
+    """A base class for handling installable artifacts.
+
+    The requirements for anything installable are as follows:
+
+     - we must be able to determine the requirement name
+       (or we can't correctly handle the non-upgrade case).
+
+     - for packages with setup requirements, we must also be able
+       to determine their requirements without installing additional
+       packages (for the same reason as run-time dependencies)
+
+     - we must be able to create a Distribution object exposing the
+       above metadata.
+    """
+
+    def __init__(self, req):
+        # type: (InstallRequirement) -> None
+        super(AbstractDistribution, self).__init__()
+        self.req = req
+
+    @abc.abstractmethod
+    def get_pkg_resources_distribution(self):
+        # type: () -> Optional[Distribution]
+        raise NotImplementedError()
+
+    @abc.abstractmethod
+    def prepare_distribution_metadata(self, finder, build_isolation):
+        # type: (PackageFinder, bool) -> None
+        raise NotImplementedError()

venv/Lib/site-packages/pip/_internal/distributions/installed.py

@@ -0,0 +1,24 @@
+from pip._internal.distributions.base import AbstractDistribution
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+
+if MYPY_CHECK_RUNNING:
+    from typing import Optional
+
+    from pip._vendor.pkg_resources import Distribution
+    from pip._internal.index.package_finder import PackageFinder
+
+
+class InstalledDistribution(AbstractDistribution):
+    """Represents an installed package.
+
+    This does not need any preparation as the required information has already
+    been computed.
+    """
+
+    def get_pkg_resources_distribution(self):
+        # type: () -> Optional[Distribution]
+        return self.req.satisfied_by
+
+    def prepare_distribution_metadata(self, finder, build_isolation):
+        # type: (PackageFinder, bool) -> None
+        pass

venv/Lib/site-packages/pip/_internal/distributions/sdist.py

@@ -0,0 +1,104 @@
+import logging
+
+from pip._internal.build_env import BuildEnvironment
+from pip._internal.distributions.base import AbstractDistribution
+from pip._internal.exceptions import InstallationError
+from pip._internal.utils.subprocess import runner_with_spinner_message
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+
+if MYPY_CHECK_RUNNING:
+    from typing import Set, Tuple
+
+    from pip._vendor.pkg_resources import Distribution
+    from pip._internal.index.package_finder import PackageFinder
+
+
+logger = logging.getLogger(__name__)
+
+
+class SourceDistribution(AbstractDistribution):
+    """Represents a source distribution.
+
+    The preparation step for these needs metadata for the packages to be
+    generated, either using PEP 517 or using the legacy `setup.py egg_info`.
+    """
+
+    def get_pkg_resources_distribution(self):
+        # type: () -> Distribution
+        return self.req.get_dist()
+
+    def prepare_distribution_metadata(self, finder, build_isolation):
+        # type: (PackageFinder, bool) -> None
+        # Load pyproject.toml, to determine whether PEP 517 is to be used
+        self.req.load_pyproject_toml()
+
+        # Set up the build isolation, if this requirement should be isolated
+        should_isolate = self.req.use_pep517 and build_isolation
+        if should_isolate:
+            self._setup_isolation(finder)
+
+        self.req.prepare_metadata()
+
+    def _setup_isolation(self, finder):
+        # type: (PackageFinder) -> None
+        def _raise_conflicts(conflicting_with, conflicting_reqs):
+            # type: (str, Set[Tuple[str, str]]) -> None
+            format_string = (
+                "Some build dependencies for {requirement} "
+                "conflict with {conflicting_with}: {description}."
+            )
+            error_message = format_string.format(
+                requirement=self.req,
+                conflicting_with=conflicting_with,
+                description=', '.join(
+                    '{} is incompatible with {}'.format(installed, wanted)
+                    for installed, wanted in sorted(conflicting)
+                )
+            )
+            raise InstallationError(error_message)
+
+        # Isolate in a BuildEnvironment and install the build-time
+        # requirements.
+        pyproject_requires = self.req.pyproject_requires
+        assert pyproject_requires is not None
+
+        self.req.build_env = BuildEnvironment()
+        self.req.build_env.install_requirements(
+            finder, pyproject_requires, 'overlay',
+            "Installing build dependencies"
+        )
+        conflicting, missing = self.req.build_env.check_requirements(
+            self.req.requirements_to_check
+        )
+        if conflicting:
+            _raise_conflicts("PEP 517/518 supported requirements",
+                             conflicting)
+        if missing:
+            logger.warning(
+                "Missing build requirements in pyproject.toml for %s.",
+                self.req,
+            )
+            logger.warning(
+                "The project does not specify a build backend, and "
+                "pip cannot fall back to setuptools without %s.",
+                " and ".join(map(repr, sorted(missing)))
+            )
+        # Install any extra build dependencies that the backend requests.
+        # This must be done in a second pass, as the pyproject.toml
+        # dependencies must be installed before we can call the backend.
+        with self.req.build_env:
+            runner = runner_with_spinner_message(
+                "Getting requirements to build wheel"
+            )
+            backend = self.req.pep517_backend
+            assert backend is not None
+            with backend.subprocess_runner(runner):
+                reqs = backend.get_requires_for_build_wheel()
+
+        conflicting, missing = self.req.build_env.check_requirements(reqs)
+        if conflicting:
+            _raise_conflicts("the backend dependencies", conflicting)
+        self.req.build_env.install_requirements(
+            finder, missing, 'normal',
+            "Installing backend dependencies"
+        )

venv/Lib/site-packages/pip/_internal/distributions/wheel.py

@@ -0,0 +1,36 @@
+from zipfile import ZipFile
+
+from pip._internal.distributions.base import AbstractDistribution
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+from pip._internal.utils.wheel import pkg_resources_distribution_for_wheel
+
+if MYPY_CHECK_RUNNING:
+    from pip._vendor.pkg_resources import Distribution
+    from pip._internal.index.package_finder import PackageFinder
+
+
+class WheelDistribution(AbstractDistribution):
+    """Represents a wheel distribution.
+
+    This does not need any preparation as wheels can be directly unpacked.
+    """
+
+    def get_pkg_resources_distribution(self):
+        # type: () -> Distribution
+        """Loads the metadata from the wheel file into memory and returns a
+        Distribution that uses it, not relying on the wheel file or
+        requirement.
+        """
+        # Set as part of preparation during download.
+        assert self.req.local_file_path
+        # Wheels are never unnamed.
+        assert self.req.name
+
+        with ZipFile(self.req.local_file_path, allowZip64=True) as z:
+            return pkg_resources_distribution_for_wheel(
+                z, self.req.name, self.req.local_file_path
+            )
+
+    def prepare_distribution_metadata(self, finder, build_isolation):
+        # type: (PackageFinder, bool) -> None
+        pass

venv/Lib/site-packages/pip/_internal/index/__init__.py

@@ -0,0 +1,2 @@
+"""Index interaction code
+"""

venv/Lib/site-packages/pip/_internal/index/collector.py

@@ -0,0 +1,692 @@
+"""
+The main purpose of this module is to expose LinkCollector.collect_links().
+"""
+
+import cgi
+import functools
+import itertools
+import logging
+import mimetypes
+import os
+import re
+from collections import OrderedDict
+
+from pip._vendor import html5lib, requests
+from pip._vendor.distlib.compat import unescape
+from pip._vendor.requests.exceptions import RetryError, SSLError
+from pip._vendor.six.moves.urllib import parse as urllib_parse
+from pip._vendor.six.moves.urllib import request as urllib_request
+
+from pip._internal.exceptions import NetworkConnectionError
+from pip._internal.models.link import Link
+from pip._internal.models.search_scope import SearchScope
+from pip._internal.network.utils import raise_for_status
+from pip._internal.utils.filetypes import ARCHIVE_EXTENSIONS
+from pip._internal.utils.misc import pairwise, redact_auth_from_url
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+from pip._internal.utils.urls import path_to_url, url_to_path
+from pip._internal.vcs import is_url, vcs
+
+if MYPY_CHECK_RUNNING:
+    from optparse import Values
+    from typing import (
+        Callable, Iterable, List, MutableMapping, Optional,
+        Protocol, Sequence, Tuple, TypeVar, Union,
+    )
+    import xml.etree.ElementTree
+
+    from pip._vendor.requests import Response
+
+    from pip._internal.network.session import PipSession
+
+    HTMLElement = xml.etree.ElementTree.Element
+    ResponseHeaders = MutableMapping[str, str]
+
+    # Used in the @lru_cache polyfill.
+    F = TypeVar('F')
+
+    class LruCache(Protocol):
+        def __call__(self, maxsize=None):
+            # type: (Optional[int]) -> Callable[[F], F]
+            raise NotImplementedError
+
+
+logger = logging.getLogger(__name__)
+
+
+# Fallback to noop_lru_cache in Python 2
+# TODO: this can be removed when python 2 support is dropped!
+def noop_lru_cache(maxsize=None):
+    # type: (Optional[int]) -> Callable[[F], F]
+    def _wrapper(f):
+        # type: (F) -> F
+        return f
+    return _wrapper
+
+
+_lru_cache = getattr(functools, "lru_cache", noop_lru_cache)  # type: LruCache
+
+
+def _match_vcs_scheme(url):
+    # type: (str) -> Optional[str]
+    """Look for VCS schemes in the URL.
+
+    Returns the matched VCS scheme, or None if there's no match.
+    """
+    for scheme in vcs.schemes:
+        if url.lower().startswith(scheme) and url[len(scheme)] in '+:':
+            return scheme
+    return None
+
+
+def _is_url_like_archive(url):
+    # type: (str) -> bool
+    """Return whether the URL looks like an archive.
+    """
+    filename = Link(url).filename
+    for bad_ext in ARCHIVE_EXTENSIONS:
+        if filename.endswith(bad_ext):
+            return True
+    return False
+
+
+class _NotHTML(Exception):
+    def __init__(self, content_type, request_desc):
+        # type: (str, str) -> None
+        super(_NotHTML, self).__init__(content_type, request_desc)
+        self.content_type = content_type
+        self.request_desc = request_desc
+
+
+def _ensure_html_header(response):
+    # type: (Response) -> None
+    """Check the Content-Type header to ensure the response contains HTML.
+
+    Raises `_NotHTML` if the content type is not text/html.
+    """
+    content_type = response.headers.get("Content-Type", "")
+    if not content_type.lower().startswith("text/html"):
+        raise _NotHTML(content_type, response.request.method)
+
+
+class _NotHTTP(Exception):
+    pass
+
+
+def _ensure_html_response(url, session):
+    # type: (str, PipSession) -> None
+    """Send a HEAD request to the URL, and ensure the response contains HTML.
+
+    Raises `_NotHTTP` if the URL is not available for a HEAD request, or
+    `_NotHTML` if the content type is not text/html.
+    """
+    scheme, netloc, path, query, fragment = urllib_parse.urlsplit(url)
+    if scheme not in {'http', 'https'}:
+        raise _NotHTTP()
+
+    resp = session.head(url, allow_redirects=True)
+    raise_for_status(resp)
+
+    _ensure_html_header(resp)
+
+
+def _get_html_response(url, session):
+    # type: (str, PipSession) -> Response
+    """Access an HTML page with GET, and return the response.
+
+    This consists of three parts:
+
+    1. If the URL looks suspiciously like an archive, send a HEAD first to
+       check the Content-Type is HTML, to avoid downloading a large file.
+       Raise `_NotHTTP` if the content type cannot be determined, or
+       `_NotHTML` if it is not HTML.
+    2. Actually perform the request. Raise HTTP exceptions on network failures.
+    3. Check the Content-Type header to make sure we got HTML, and raise
+       `_NotHTML` otherwise.
+    """
+    if _is_url_like_archive(url):
+        _ensure_html_response(url, session=session)
+
+    logger.debug('Getting page %s', redact_auth_from_url(url))
+
+    resp = session.get(
+        url,
+        headers={
+            "Accept": "text/html",
+            # We don't want to blindly returned cached data for
+            # /simple/, because authors generally expecting that
+            # twine upload && pip install will function, but if
+            # they've done a pip install in the last ~10 minutes
+            # it won't. Thus by setting this to zero we will not
+            # blindly use any cached data, however the benefit of
+            # using max-age=0 instead of no-cache, is that we will
+            # still support conditional requests, so we will still
+            # minimize traffic sent in cases where the page hasn't
+            # changed at all, we will just always incur the round
+            # trip for the conditional GET now instead of only
+            # once per 10 minutes.
+            # For more information, please see pypa/pip#5670.
+            "Cache-Control": "max-age=0",
+        },
+    )
+    raise_for_status(resp)
+
+    # The check for archives above only works if the url ends with
+    # something that looks like an archive. However that is not a
+    # requirement of an url. Unless we issue a HEAD request on every
+    # url we cannot know ahead of time for sure if something is HTML
+    # or not. However we can check after we've downloaded it.
+    _ensure_html_header(resp)
+
+    return resp
+
+
+def _get_encoding_from_headers(headers):
+    # type: (ResponseHeaders) -> Optional[str]
+    """Determine if we have any encoding information in our headers.
+    """
+    if headers and "Content-Type" in headers:
+        content_type, params = cgi.parse_header(headers["Content-Type"])
+        if "charset" in params:
+            return params['charset']
+    return None
+
+
+def _determine_base_url(document, page_url):
+    # type: (HTMLElement, str) -> str
+    """Determine the HTML document's base URL.
+
+    This looks for a ``<base>`` tag in the HTML document. If present, its href
+    attribute denotes the base URL of anchor tags in the document. If there is
+    no such tag (or if it does not have a valid href attribute), the HTML
+    file's URL is used as the base URL.
+
+    :param document: An HTML document representation. The current
+        implementation expects the result of ``html5lib.parse()``.
+    :param page_url: The URL of the HTML document.
+    """
+    for base in document.findall(".//base"):
+        href = base.get("href")
+        if href is not None:
+            return href
+    return page_url
+
+
+def _clean_url_path_part(part):
+    # type: (str) -> str
+    """
+    Clean a "part" of a URL path (i.e. after splitting on "@" characters).
+    """
+    # We unquote prior to quoting to make sure nothing is double quoted.
+    return urllib_parse.quote(urllib_parse.unquote(part))
+
+
+def _clean_file_url_path(part):
+    # type: (str) -> str
+    """
+    Clean the first part of a URL path that corresponds to a local
+    filesystem path (i.e. the first part after splitting on "@" characters).
+    """
+    # We unquote prior to quoting to make sure nothing is double quoted.
+    # Also, on Windows the path part might contain a drive letter which
+    # should not be quoted. On Linux where drive letters do not
+    # exist, the colon should be quoted. We rely on urllib.request
+    # to do the right thing here.
+    return urllib_request.pathname2url(urllib_request.url2pathname(part))
+
+
+# percent-encoded:                   /
+_reserved_chars_re = re.compile('(@|%2F)', re.IGNORECASE)
+
+
+def _clean_url_path(path, is_local_path):
+    # type: (str, bool) -> str
+    """
+    Clean the path portion of a URL.
+    """
+    if is_local_path:
+        clean_func = _clean_file_url_path
+    else:
+        clean_func = _clean_url_path_part
+
+    # Split on the reserved characters prior to cleaning so that
+    # revision strings in VCS URLs are properly preserved.
+    parts = _reserved_chars_re.split(path)
+
+    cleaned_parts = []
+    for to_clean, reserved in pairwise(itertools.chain(parts, [''])):
+        cleaned_parts.append(clean_func(to_clean))
+        # Normalize %xx escapes (e.g. %2f -> %2F)
+        cleaned_parts.append(reserved.upper())
+
+    return ''.join(cleaned_parts)
+
+
+def _clean_link(url):
+    # type: (str) -> str
+    """
+    Make sure a link is fully quoted.
+    For example, if ' ' occurs in the URL, it will be replaced with "%20",
+    and without double-quoting other characters.
+    """
+    # Split the URL into parts according to the general structure
+    # `scheme://netloc/path;parameters?query#fragment`.
+    result = urllib_parse.urlparse(url)
+    # If the netloc is empty, then the URL refers to a local filesystem path.
+    is_local_path = not result.netloc
+    path = _clean_url_path(result.path, is_local_path=is_local_path)
+    return urllib_parse.urlunparse(result._replace(path=path))
+
+
+def _create_link_from_element(
+    anchor,    # type: HTMLElement
+    page_url,  # type: str
+    base_url,  # type: str
+):
+    # type: (...) -> Optional[Link]
+    """
+    Convert an anchor element in a simple repository page to a Link.
+    """
+    href = anchor.get("href")
+    if not href:
+        return None
+
+    url = _clean_link(urllib_parse.urljoin(base_url, href))
+    pyrequire = anchor.get('data-requires-python')
+    pyrequire = unescape(pyrequire) if pyrequire else None
+
+    yanked_reason = anchor.get('data-yanked')
+    if yanked_reason:
+        # This is a unicode string in Python 2 (and 3).
+        yanked_reason = unescape(yanked_reason)
+
+    link = Link(
+        url,
+        comes_from=page_url,
+        requires_python=pyrequire,
+        yanked_reason=yanked_reason,
+    )
+
+    return link
+
+
+class CacheablePageContent(object):
+    def __init__(self, page):
+        # type: (HTMLPage) -> None
+        assert page.cache_link_parsing
+        self.page = page
+
+    def __eq__(self, other):
+        # type: (object) -> bool
+        return (isinstance(other, type(self)) and
+                self.page.url == other.page.url)
+
+    def __hash__(self):
+        # type: () -> int
+        return hash(self.page.url)
+
+
+def with_cached_html_pages(
+    fn,    # type: Callable[[HTMLPage], Iterable[Link]]
+):
+    # type: (...) -> Callable[[HTMLPage], List[Link]]
+    """
+    Given a function that parses an Iterable[Link] from an HTMLPage, cache the
+    function's result (keyed by CacheablePageContent), unless the HTMLPage
+    `page` has `page.cache_link_parsing == False`.
+    """
+
+    @_lru_cache(maxsize=None)
+    def wrapper(cacheable_page):
+        # type: (CacheablePageContent) -> List[Link]
+        return list(fn(cacheable_page.page))
+
+    @functools.wraps(fn)
+    def wrapper_wrapper(page):
+        # type: (HTMLPage) -> List[Link]
+        if page.cache_link_parsing:
+            return wrapper(CacheablePageContent(page))
+        return list(fn(page))
+
+    return wrapper_wrapper
+
+
+@with_cached_html_pages
+def parse_links(page):
+    # type: (HTMLPage) -> Iterable[Link]
+    """
+    Parse an HTML document, and yield its anchor elements as Link objects.
+    """
+    document = html5lib.parse(
+        page.content,
+        transport_encoding=page.encoding,
+        namespaceHTMLElements=False,
+    )
+
+    url = page.url
+    base_url = _determine_base_url(document, url)
+    for anchor in document.findall(".//a"):
+        link = _create_link_from_element(
+            anchor,
+            page_url=url,
+            base_url=base_url,
+        )
+        if link is None:
+            continue
+        yield link
+
+
+class HTMLPage(object):
+    """Represents one page, along with its URL"""
+
+    def __init__(
+        self,
+        content,                  # type: bytes
+        encoding,                 # type: Optional[str]
+        url,                      # type: str
+        cache_link_parsing=True,  # type: bool
+    ):
+        # type: (...) -> None
+        """
+        :param encoding: the encoding to decode the given content.
+        :param url: the URL from which the HTML was downloaded.
+        :param cache_link_parsing: whether links parsed from this page's url
+                                   should be cached. PyPI index urls should
+                                   have this set to False, for example.
+        """
+        self.content = content
+        self.encoding = encoding
+        self.url = url
+        self.cache_link_parsing = cache_link_parsing
+
+    def __str__(self):
+        # type: () -> str
+        return redact_auth_from_url(self.url)
+
+
+def _handle_get_page_fail(
+    link,  # type: Link
+    reason,  # type: Union[str, Exception]
+    meth=None  # type: Optional[Callable[..., None]]
+):
+    # type: (...) -> None
+    if meth is None:
+        meth = logger.debug
+    meth("Could not fetch URL %s: %s - skipping", link, reason)
+
+
+def _make_html_page(response, cache_link_parsing=True):
+    # type: (Response, bool) -> HTMLPage
+    encoding = _get_encoding_from_headers(response.headers)
+    return HTMLPage(
+        response.content,
+        encoding=encoding,
+        url=response.url,
+        cache_link_parsing=cache_link_parsing)
+
+
+def _get_html_page(link, session=None):
+    # type: (Link, Optional[PipSession]) -> Optional[HTMLPage]
+    if session is None:
+        raise TypeError(
+            "_get_html_page() missing 1 required keyword argument: 'session'"
+        )
+
+    url = link.url.split('#', 1)[0]
+
+    # Check for VCS schemes that do not support lookup as web pages.
+    vcs_scheme = _match_vcs_scheme(url)
+    if vcs_scheme:
+        logger.warning('Cannot look at %s URL %s because it does not support '
+                       'lookup as web pages.', vcs_scheme, link)
+        return None
+
+    # Tack index.html onto file:// URLs that point to directories
+    scheme, _, path, _, _, _ = urllib_parse.urlparse(url)
+    if (scheme == 'file' and os.path.isdir(urllib_request.url2pathname(path))):
+        # add trailing slash if not present so urljoin doesn't trim
+        # final segment
+        if not url.endswith('/'):
+            url += '/'
+        url = urllib_parse.urljoin(url, 'index.html')
+        logger.debug(' file: URL is directory, getting %s', url)
+
+    try:
+        resp = _get_html_response(url, session=session)
+    except _NotHTTP:
+        logger.warning(
+            'Skipping page %s because it looks like an archive, and cannot '
+            'be checked by a HTTP HEAD request.', link,
+        )
+    except _NotHTML as exc:
+        logger.warning(
+            'Skipping page %s because the %s request got Content-Type: %s.'
+            'The only supported Content-Type is text/html',
+            link, exc.request_desc, exc.content_type,
+        )
+    except NetworkConnectionError as exc:
+        _handle_get_page_fail(link, exc)
+    except RetryError as exc:
+        _handle_get_page_fail(link, exc)
+    except SSLError as exc:
+        reason = "There was a problem confirming the ssl certificate: "
+        reason += str(exc)
+        _handle_get_page_fail(link, reason, meth=logger.info)
+    except requests.ConnectionError as exc:
+        _handle_get_page_fail(link, "connection error: {}".format(exc))
+    except requests.Timeout:
+        _handle_get_page_fail(link, "timed out")
+    else:
+        return _make_html_page(resp,
+                               cache_link_parsing=link.cache_link_parsing)
+    return None
+
+
+def _remove_duplicate_links(links):
+    # type: (Iterable[Link]) -> List[Link]
+    """
+    Return a list of links, with duplicates removed and ordering preserved.
+    """
+    # We preserve the ordering when removing duplicates because we can.
+    return list(OrderedDict.fromkeys(links))
+
+
+def group_locations(locations, expand_dir=False):
+    # type: (Sequence[str], bool) -> Tuple[List[str], List[str]]
+    """
+    Divide a list of locations into two groups: "files" (archives) and "urls."
+
+    :return: A pair of lists (files, urls).
+    """
+    files = []
+    urls = []
+
+    # puts the url for the given file path into the appropriate list
+    def sort_path(path):
+        # type: (str) -> None
+        url = path_to_url(path)
+        if mimetypes.guess_type(url, strict=False)[0] == 'text/html':
+            urls.append(url)
+        else:
+            files.append(url)
+
+    for url in locations:
+
+        is_local_path = os.path.exists(url)
+        is_file_url = url.startswith('file:')
+
+        if is_local_path or is_file_url:
+            if is_local_path:
+                path = url
+            else:
+                path = url_to_path(url)
+            if os.path.isdir(path):
+                if expand_dir:
+                    path = os.path.realpath(path)
+                    for item in os.listdir(path):
+                        sort_path(os.path.join(path, item))
+                elif is_file_url:
+                    urls.append(url)
+                else:
+                    logger.warning(
+                        "Path '%s' is ignored: it is a directory.", path,
+                    )
+            elif os.path.isfile(path):
+                sort_path(path)
+            else:
+                logger.warning(
+                    "Url '%s' is ignored: it is neither a file "
+                    "nor a directory.", url,
+                )
+        elif is_url(url):
+            # Only add url with clear scheme
+            urls.append(url)
+        else:
+            logger.warning(
+                "Url '%s' is ignored. It is either a non-existing "
+                "path or lacks a specific scheme.", url,
+            )
+
+    return files, urls
+
+
+class CollectedLinks(object):
+
+    """
+    Encapsulates the return value of a call to LinkCollector.collect_links().
+
+    The return value includes both URLs to project pages containing package
+    links, as well as individual package Link objects collected from other
+    sources.
+
+    This info is stored separately as:
+
+    (1) links from the configured file locations,
+    (2) links from the configured find_links, and
+    (3) urls to HTML project pages, as described by the PEP 503 simple
+        repository API.
+    """
+
+    def __init__(
+        self,
+        files,         # type: List[Link]
+        find_links,    # type: List[Link]
+        project_urls,  # type: List[Link]
+    ):
+        # type: (...) -> None
+        """
+        :param files: Links from file locations.
+        :param find_links: Links from find_links.
+        :param project_urls: URLs to HTML project pages, as described by
+            the PEP 503 simple repository API.
+        """
+        self.files = files
+        self.find_links = find_links
+        self.project_urls = project_urls
+
+
+class LinkCollector(object):
+
+    """
+    Responsible for collecting Link objects from all configured locations,
+    making network requests as needed.
+
+    The class's main method is its collect_links() method.
+    """
+
+    def __init__(
+        self,
+        session,       # type: PipSession
+        search_scope,  # type: SearchScope
+    ):
+        # type: (...) -> None
+        self.search_scope = search_scope
+        self.session = session
+
+    @classmethod
+    def create(cls, session, options, suppress_no_index=False):
+        # type: (PipSession, Values, bool) -> LinkCollector
+        """
+        :param session: The Session to use to make requests.
+        :param suppress_no_index: Whether to ignore the --no-index option
+            when constructing the SearchScope object.
+        """
+        index_urls = [options.index_url] + options.extra_index_urls
+        if options.no_index and not suppress_no_index:
+            logger.debug(
+                'Ignoring indexes: %s',
+                ','.join(redact_auth_from_url(url) for url in index_urls),
+            )
+            index_urls = []
+
+        # Make sure find_links is a list before passing to create().
+        find_links = options.find_links or []
+
+        search_scope = SearchScope.create(
+            find_links=find_links, index_urls=index_urls,
+        )
+        link_collector = LinkCollector(
+            session=session, search_scope=search_scope,
+        )
+        return link_collector
+
+    @property
+    def find_links(self):
+        # type: () -> List[str]
+        return self.search_scope.find_links
+
+    def fetch_page(self, location):
+        # type: (Link) -> Optional[HTMLPage]
+        """
+        Fetch an HTML page containing package links.
+        """
+        return _get_html_page(location, session=self.session)
+
+    def collect_links(self, project_name):
+        # type: (str) -> CollectedLinks
+        """Find all available links for the given project name.
+
+        :return: All the Link objects (unfiltered), as a CollectedLinks object.
+        """
+        search_scope = self.search_scope
+        index_locations = search_scope.get_index_urls_locations(project_name)
+        index_file_loc, index_url_loc = group_locations(index_locations)
+        fl_file_loc, fl_url_loc = group_locations(
+            self.find_links, expand_dir=True,
+        )
+
+        file_links = [
+            Link(url) for url in itertools.chain(index_file_loc, fl_file_loc)
+        ]
+
+        # We trust every directly linked archive in find_links
+        find_link_links = [Link(url, '-f') for url in self.find_links]
+
+        # We trust every url that the user has given us whether it was given
+        # via --index-url or --find-links.
+        # We want to filter out anything that does not have a secure origin.
+        url_locations = [
+            link for link in itertools.chain(
+                # Mark PyPI indices as "cache_link_parsing == False" -- this
+                # will avoid caching the result of parsing the page for links.
+                (Link(url, cache_link_parsing=False) for url in index_url_loc),
+                (Link(url) for url in fl_url_loc),
+            )
+            if self.session.is_secure_origin(link)
+        ]
+
+        url_locations = _remove_duplicate_links(url_locations)
+        lines = [
+            '{} location(s) to search for versions of {}:'.format(
+                len(url_locations), project_name,
+            ),
+        ]
+        for link in url_locations:
+            lines.append('* {}'.format(link))
+        logger.debug('\n'.join(lines))
+
+        return CollectedLinks(
+            files=file_links,
+            find_links=find_link_links,
+            project_urls=url_locations,
+        )

venv/Lib/site-packages/pip/_internal/index/package_finder.py

@@ -0,0 +1,1014 @@
+"""Routines related to PyPI, indexes"""
+
+# The following comment should be removed at some point in the future.
+# mypy: strict-optional=False
+
+from __future__ import absolute_import
+
+import logging
+import re
+
+from pip._vendor.packaging import specifiers
+from pip._vendor.packaging.utils import canonicalize_name
+from pip._vendor.packaging.version import parse as parse_version
+
+from pip._internal.exceptions import (
+    BestVersionAlreadyInstalled,
+    DistributionNotFound,
+    InvalidWheelFilename,
+    UnsupportedWheel,
+)
+from pip._internal.index.collector import parse_links
+from pip._internal.models.candidate import InstallationCandidate
+from pip._internal.models.format_control import FormatControl
+from pip._internal.models.link import Link
+from pip._internal.models.selection_prefs import SelectionPreferences
+from pip._internal.models.target_python import TargetPython
+from pip._internal.models.wheel import Wheel
+from pip._internal.utils.filetypes import WHEEL_EXTENSION
+from pip._internal.utils.logging import indent_log
+from pip._internal.utils.misc import build_netloc
+from pip._internal.utils.packaging import check_requires_python
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+from pip._internal.utils.unpacking import SUPPORTED_EXTENSIONS
+from pip._internal.utils.urls import url_to_path
+
+if MYPY_CHECK_RUNNING:
+    from typing import (
+        FrozenSet, Iterable, List, Optional, Set, Text, Tuple, Union,
+    )
+
+    from pip._vendor.packaging.tags import Tag
+    from pip._vendor.packaging.version import _BaseVersion
+
+    from pip._internal.index.collector import LinkCollector
+    from pip._internal.models.search_scope import SearchScope
+    from pip._internal.req import InstallRequirement
+    from pip._internal.utils.hashes import Hashes
+
+    BuildTag = Union[Tuple[()], Tuple[int, str]]
+    CandidateSortingKey = (
+        Tuple[int, int, int, _BaseVersion, BuildTag, Optional[int]]
+    )
+
+
+__all__ = ['FormatControl', 'BestCandidateResult', 'PackageFinder']
+
+
+logger = logging.getLogger(__name__)
+
+
+def _check_link_requires_python(
+    link,  # type: Link
+    version_info,  # type: Tuple[int, int, int]
+    ignore_requires_python=False,  # type: bool
+):
+    # type: (...) -> bool
+    """
+    Return whether the given Python version is compatible with a link's
+    "Requires-Python" value.
+
+    :param version_info: A 3-tuple of ints representing the Python
+        major-minor-micro version to check.
+    :param ignore_requires_python: Whether to ignore the "Requires-Python"
+        value if the given Python version isn't compatible.
+    """
+    try:
+        is_compatible = check_requires_python(
+            link.requires_python, version_info=version_info,
+        )
+    except specifiers.InvalidSpecifier:
+        logger.debug(
+            "Ignoring invalid Requires-Python (%r) for link: %s",
+            link.requires_python, link,
+        )
+    else:
+        if not is_compatible:
+            version = '.'.join(map(str, version_info))
+            if not ignore_requires_python:
+                logger.debug(
+                    'Link requires a different Python (%s not in: %r): %s',
+                    version, link.requires_python, link,
+                )
+                return False
+
+            logger.debug(
+                'Ignoring failed Requires-Python check (%s not in: %r) '
+                'for link: %s',
+                version, link.requires_python, link,
+            )
+
+    return True
+
+
+class LinkEvaluator(object):
+
+    """
+    Responsible for evaluating links for a particular project.
+    """
+
+    _py_version_re = re.compile(r'-py([123]\.?[0-9]?)$')
+
+    # Don't include an allow_yanked default value to make sure each call
+    # site considers whether yanked releases are allowed. This also causes
+    # that decision to be made explicit in the calling code, which helps
+    # people when reading the code.
+    def __init__(
+        self,
+        project_name,    # type: str
+        canonical_name,  # type: str
+        formats,         # type: FrozenSet[str]
+        target_python,   # type: TargetPython
+        allow_yanked,    # type: bool
+        ignore_requires_python=None,  # type: Optional[bool]
+    ):
+        # type: (...) -> None
+        """
+        :param project_name: The user supplied package name.
+        :param canonical_name: The canonical package name.
+        :param formats: The formats allowed for this package. Should be a set
+            with 'binary' or 'source' or both in it.
+        :param target_python: The target Python interpreter to use when
+            evaluating link compatibility. This is used, for example, to
+            check wheel compatibility, as well as when checking the Python
+            version, e.g. the Python version embedded in a link filename
+            (or egg fragment) and against an HTML link's optional PEP 503
+            "data-requires-python" attribute.
+        :param allow_yanked: Whether files marked as yanked (in the sense
+            of PEP 592) are permitted to be candidates for install.
+        :param ignore_requires_python: Whether to ignore incompatible
+            PEP 503 "data-requires-python" values in HTML links. Defaults
+            to False.
+        """
+        if ignore_requires_python is None:
+            ignore_requires_python = False
+
+        self._allow_yanked = allow_yanked
+        self._canonical_name = canonical_name
+        self._ignore_requires_python = ignore_requires_python
+        self._formats = formats
+        self._target_python = target_python
+
+        self.project_name = project_name
+
+    def evaluate_link(self, link):
+        # type: (Link) -> Tuple[bool, Optional[Text]]
+        """
+        Determine whether a link is a candidate for installation.
+
+        :return: A tuple (is_candidate, result), where `result` is (1) a
+            version string if `is_candidate` is True, and (2) if
+            `is_candidate` is False, an optional string to log the reason
+            the link fails to qualify.
+        """
+        version = None
+        if link.is_yanked and not self._allow_yanked:
+            reason = link.yanked_reason or '<none given>'
+            # Mark this as a unicode string to prevent "UnicodeEncodeError:
+            # 'ascii' codec can't encode character" in Python 2 when
+            # the reason contains non-ascii characters.
+            return (False, u'yanked for reason: {}'.format(reason))
+
+        if link.egg_fragment:
+            egg_info = link.egg_fragment
+            ext = link.ext
+        else:
+            egg_info, ext = link.splitext()
+            if not ext:
+                return (False, 'not a file')
+            if ext not in SUPPORTED_EXTENSIONS:
+                return (False, 'unsupported archive format: {}'.format(ext))
+            if "binary" not in self._formats and ext == WHEEL_EXTENSION:
+                reason = 'No binaries permitted for {}'.format(
+                    self.project_name)
+                return (False, reason)
+            if "macosx10" in link.path and ext == '.zip':
+                return (False, 'macosx10 one')
+            if ext == WHEEL_EXTENSION:
+                try:
+                    wheel = Wheel(link.filename)
+                except InvalidWheelFilename:
+                    return (False, 'invalid wheel filename')
+                if canonicalize_name(wheel.name) != self._canonical_name:
+                    reason = 'wrong project name (not {})'.format(
+                        self.project_name)
+                    return (False, reason)
+
+                supported_tags = self._target_python.get_tags()
+                if not wheel.supported(supported_tags):
+                    # Include the wheel's tags in the reason string to
+                    # simplify troubleshooting compatibility issues.
+                    file_tags = wheel.get_formatted_file_tags()
+                    reason = (
+                        "none of the wheel's tags match: {}".format(
+                            ', '.join(file_tags)
+                        )
+                    )
+                    return (False, reason)
+
+                version = wheel.version
+
+        # This should be up by the self.ok_binary check, but see issue 2700.
+        if "source" not in self._formats and ext != WHEEL_EXTENSION:
+            reason = 'No sources permitted for {}'.format(self.project_name)
+            return (False, reason)
+
+        if not version:
+            version = _extract_version_from_fragment(
+                egg_info, self._canonical_name,
+            )
+        if not version:
+            reason = 'Missing project version for {}'.format(self.project_name)
+            return (False, reason)
+
+        match = self._py_version_re.search(version)
+        if match:
+            version = version[:match.start()]
+            py_version = match.group(1)
+            if py_version != self._target_python.py_version:
+                return (False, 'Python version is incorrect')
+
+        supports_python = _check_link_requires_python(
+            link, version_info=self._target_python.py_version_info,
+            ignore_requires_python=self._ignore_requires_python,
+        )
+        if not supports_python:
+            # Return None for the reason text to suppress calling
+            # _log_skipped_link().
+            return (False, None)
+
+        logger.debug('Found link %s, version: %s', link, version)
+
+        return (True, version)
+
+
+def filter_unallowed_hashes(
+    candidates,    # type: List[InstallationCandidate]
+    hashes,        # type: Hashes
+    project_name,  # type: str
+):
+    # type: (...) -> List[InstallationCandidate]
+    """
+    Filter out candidates whose hashes aren't allowed, and return a new
+    list of candidates.
+
+    If at least one candidate has an allowed hash, then all candidates with
+    either an allowed hash or no hash specified are returned.  Otherwise,
+    the given candidates are returned.
+
+    Including the candidates with no hash specified when there is a match
+    allows a warning to be logged if there is a more preferred candidate
+    with no hash specified.  Returning all candidates in the case of no
+    matches lets pip report the hash of the candidate that would otherwise
+    have been installed (e.g. permitting the user to more easily update
+    their requirements file with the desired hash).
+    """
+    if not hashes:
+        logger.debug(
+            'Given no hashes to check %s links for project %r: '
+            'discarding no candidates',
+            len(candidates),
+            project_name,
+        )
+        # Make sure we're not returning back the given value.
+        return list(candidates)
+
+    matches_or_no_digest = []
+    # Collect the non-matches for logging purposes.
+    non_matches = []
+    match_count = 0
+    for candidate in candidates:
+        link = candidate.link
+        if not link.has_hash:
+            pass
+        elif link.is_hash_allowed(hashes=hashes):
+            match_count += 1
+        else:
+            non_matches.append(candidate)
+            continue
+
+        matches_or_no_digest.append(candidate)
+
+    if match_count:
+        filtered = matches_or_no_digest
+    else:
+        # Make sure we're not returning back the given value.
+        filtered = list(candidates)
+
+    if len(filtered) == len(candidates):
+        discard_message = 'discarding no candidates'
+    else:
+        discard_message = 'discarding {} non-matches:\n  {}'.format(
+            len(non_matches),
+            '\n  '.join(str(candidate.link) for candidate in non_matches)
+        )
+
+    logger.debug(
+        'Checked %s links for project %r against %s hashes '
+        '(%s matches, %s no digest): %s',
+        len(candidates),
+        project_name,
+        hashes.digest_count,
+        match_count,
+        len(matches_or_no_digest) - match_count,
+        discard_message
+    )
+
+    return filtered
+
+
+class CandidatePreferences(object):
+
+    """
+    Encapsulates some of the preferences for filtering and sorting
+    InstallationCandidate objects.
+    """
+
+    def __init__(
+        self,
+        prefer_binary=False,  # type: bool
+        allow_all_prereleases=False,  # type: bool
+    ):
+        # type: (...) -> None
+        """
+        :param allow_all_prereleases: Whether to allow all pre-releases.
+        """
+        self.allow_all_prereleases = allow_all_prereleases
+        self.prefer_binary = prefer_binary
+
+
+class BestCandidateResult(object):
+    """A collection of candidates, returned by `PackageFinder.find_best_candidate`.
+
+    This class is only intended to be instantiated by CandidateEvaluator's
+    `compute_best_candidate()` method.
+    """
+
+    def __init__(
+        self,
+        candidates,             # type: List[InstallationCandidate]
+        applicable_candidates,  # type: List[InstallationCandidate]
+        best_candidate,         # type: Optional[InstallationCandidate]
+    ):
+        # type: (...) -> None
+        """
+        :param candidates: A sequence of all available candidates found.
+        :param applicable_candidates: The applicable candidates.
+        :param best_candidate: The most preferred candidate found, or None
+            if no applicable candidates were found.
+        """
+        assert set(applicable_candidates) <= set(candidates)
+
+        if best_candidate is None:
+            assert not applicable_candidates
+        else:
+            assert best_candidate in applicable_candidates
+
+        self._applicable_candidates = applicable_candidates
+        self._candidates = candidates
+
+        self.best_candidate = best_candidate
+
+    def iter_all(self):
+        # type: () -> Iterable[InstallationCandidate]
+        """Iterate through all candidates.
+        """
+        return iter(self._candidates)
+
+    def iter_applicable(self):
+        # type: () -> Iterable[InstallationCandidate]
+        """Iterate through the applicable candidates.
+        """
+        return iter(self._applicable_candidates)
+
+
+class CandidateEvaluator(object):
+
+    """
+    Responsible for filtering and sorting candidates for installation based
+    on what tags are valid.
+    """
+
+    @classmethod
+    def create(
+        cls,
+        project_name,         # type: str
+        target_python=None,   # type: Optional[TargetPython]
+        prefer_binary=False,  # type: bool
+        allow_all_prereleases=False,  # type: bool
+        specifier=None,       # type: Optional[specifiers.BaseSpecifier]
+        hashes=None,          # type: Optional[Hashes]
+    ):
+        # type: (...) -> CandidateEvaluator
+        """Create a CandidateEvaluator object.
+
+        :param target_python: The target Python interpreter to use when
+            checking compatibility. If None (the default), a TargetPython
+            object will be constructed from the running Python.
+        :param specifier: An optional object implementing `filter`
+            (e.g. `packaging.specifiers.SpecifierSet`) to filter applicable
+            versions.
+        :param hashes: An optional collection of allowed hashes.
+        """
+        if target_python is None:
+            target_python = TargetPython()
+        if specifier is None:
+            specifier = specifiers.SpecifierSet()
+
+        supported_tags = target_python.get_tags()
+
+        return cls(
+            project_name=project_name,
+            supported_tags=supported_tags,
+            specifier=specifier,
+            prefer_binary=prefer_binary,
+            allow_all_prereleases=allow_all_prereleases,
+            hashes=hashes,
+        )
+
+    def __init__(
+        self,
+        project_name,         # type: str
+        supported_tags,       # type: List[Tag]
+        specifier,            # type: specifiers.BaseSpecifier
+        prefer_binary=False,  # type: bool
+        allow_all_prereleases=False,  # type: bool
+        hashes=None,                  # type: Optional[Hashes]
+    ):
+        # type: (...) -> None
+        """
+        :param supported_tags: The PEP 425 tags supported by the target
+            Python in order of preference (most preferred first).
+        """
+        self._allow_all_prereleases = allow_all_prereleases
+        self._hashes = hashes
+        self._prefer_binary = prefer_binary
+        self._project_name = project_name
+        self._specifier = specifier
+        self._supported_tags = supported_tags
+
+    def get_applicable_candidates(
+        self,
+        candidates,  # type: List[InstallationCandidate]
+    ):
+        # type: (...) -> List[InstallationCandidate]
+        """
+        Return the applicable candidates from a list of candidates.
+        """
+        # Using None infers from the specifier instead.
+        allow_prereleases = self._allow_all_prereleases or None
+        specifier = self._specifier
+        versions = {
+            str(v) for v in specifier.filter(
+                # We turn the version object into a str here because otherwise
+                # when we're debundled but setuptools isn't, Python will see
+                # packaging.version.Version and
+                # pkg_resources._vendor.packaging.version.Version as different
+                # types. This way we'll use a str as a common data interchange
+                # format. If we stop using the pkg_resources provided specifier
+                # and start using our own, we can drop the cast to str().
+                (str(c.version) for c in candidates),
+                prereleases=allow_prereleases,
+            )
+        }
+
+        # Again, converting version to str to deal with debundling.
+        applicable_candidates = [
+            c for c in candidates if str(c.version) in versions
+        ]
+
+        filtered_applicable_candidates = filter_unallowed_hashes(
+            candidates=applicable_candidates,
+            hashes=self._hashes,
+            project_name=self._project_name,
+        )
+
+        return sorted(filtered_applicable_candidates, key=self._sort_key)
+
+    def _sort_key(self, candidate):
+        # type: (InstallationCandidate) -> CandidateSortingKey
+        """
+        Function to pass as the `key` argument to a call to sorted() to sort
+        InstallationCandidates by preference.
+
+        Returns a tuple such that tuples sorting as greater using Python's
+        default comparison operator are more preferred.
+
+        The preference is as follows:
+
+        First and foremost, candidates with allowed (matching) hashes are
+        always preferred over candidates without matching hashes. This is
+        because e.g. if the only candidate with an allowed hash is yanked,
+        we still want to use that candidate.
+
+        Second, excepting hash considerations, candidates that have been
+        yanked (in the sense of PEP 592) are always less preferred than
+        candidates that haven't been yanked. Then:
+
+        If not finding wheels, they are sorted by version only.
+        If finding wheels, then the sort order is by version, then:
+          1. existing installs
+          2. wheels ordered via Wheel.support_index_min(self._supported_tags)
+          3. source archives
+        If prefer_binary was set, then all wheels are sorted above sources.
+
+        Note: it was considered to embed this logic into the Link
+              comparison operators, but then different sdist links
+              with the same version, would have to be considered equal
+        """
+        valid_tags = self._supported_tags
+        support_num = len(valid_tags)
+        build_tag = ()  # type: BuildTag
+        binary_preference = 0
+        link = candidate.link
+        if link.is_wheel:
+            # can raise InvalidWheelFilename
+            wheel = Wheel(link.filename)
+            if not wheel.supported(valid_tags):
+                raise UnsupportedWheel(
+                    "{} is not a supported wheel for this platform. It "
+                    "can't be sorted.".format(wheel.filename)
+                )
+            if self._prefer_binary:
+                binary_preference = 1
+            pri = -(wheel.support_index_min(valid_tags))
+            if wheel.build_tag is not None:
+                match = re.match(r'^(\d+)(.*)$', wheel.build_tag)
+                build_tag_groups = match.groups()
+                build_tag = (int(build_tag_groups[0]), build_tag_groups[1])
+        else:  # sdist
+            pri = -(support_num)
+        has_allowed_hash = int(link.is_hash_allowed(self._hashes))
+        yank_value = -1 * int(link.is_yanked)  # -1 for yanked.
+        return (
+            has_allowed_hash, yank_value, binary_preference, candidate.version,
+            build_tag, pri,
+        )
+
+    def sort_best_candidate(
+        self,
+        candidates,    # type: List[InstallationCandidate]
+    ):
+        # type: (...) -> Optional[InstallationCandidate]
+        """
+        Return the best candidate per the instance's sort order, or None if
+        no candidate is acceptable.
+        """
+        if not candidates:
+            return None
+        best_candidate = max(candidates, key=self._sort_key)
+        return best_candidate
+
+    def compute_best_candidate(
+        self,
+        candidates,      # type: List[InstallationCandidate]
+    ):
+        # type: (...) -> BestCandidateResult
+        """
+        Compute and return a `BestCandidateResult` instance.
+        """
+        applicable_candidates = self.get_applicable_candidates(candidates)
+
+        best_candidate = self.sort_best_candidate(applicable_candidates)
+
+        return BestCandidateResult(
+            candidates,
+            applicable_candidates=applicable_candidates,
+            best_candidate=best_candidate,
+        )
+
+
+class PackageFinder(object):
+    """This finds packages.
+
+    This is meant to match easy_install's technique for looking for
+    packages, by reading pages and looking for appropriate links.
+    """
+
+    def __init__(
+        self,
+        link_collector,       # type: LinkCollector
+        target_python,        # type: TargetPython
+        allow_yanked,         # type: bool
+        format_control=None,  # type: Optional[FormatControl]
+        candidate_prefs=None,         # type: CandidatePreferences
+        ignore_requires_python=None,  # type: Optional[bool]
+    ):
+        # type: (...) -> None
+        """
+        This constructor is primarily meant to be used by the create() class
+        method and from tests.
+
+        :param format_control: A FormatControl object, used to control
+            the selection of source packages / binary packages when consulting
+            the index and links.
+        :param candidate_prefs: Options to use when creating a
+            CandidateEvaluator object.
+        """
+        if candidate_prefs is None:
+            candidate_prefs = CandidatePreferences()
+
+        format_control = format_control or FormatControl(set(), set())
+
+        self._allow_yanked = allow_yanked
+        self._candidate_prefs = candidate_prefs
+        self._ignore_requires_python = ignore_requires_python
+        self._link_collector = link_collector
+        self._target_python = target_python
+
+        self.format_control = format_control
+
+        # These are boring links that have already been logged somehow.
+        self._logged_links = set()  # type: Set[Link]
+
+    # Don't include an allow_yanked default value to make sure each call
+    # site considers whether yanked releases are allowed. This also causes
+    # that decision to be made explicit in the calling code, which helps
+    # people when reading the code.
+    @classmethod
+    def create(
+        cls,
+        link_collector,      # type: LinkCollector
+        selection_prefs,     # type: SelectionPreferences
+        target_python=None,  # type: Optional[TargetPython]
+    ):
+        # type: (...) -> PackageFinder
+        """Create a PackageFinder.
+
+        :param selection_prefs: The candidate selection preferences, as a
+            SelectionPreferences object.
+        :param target_python: The target Python interpreter to use when
+            checking compatibility. If None (the default), a TargetPython
+            object will be constructed from the running Python.
+        """
+        if target_python is None:
+            target_python = TargetPython()
+
+        candidate_prefs = CandidatePreferences(
+            prefer_binary=selection_prefs.prefer_binary,
+            allow_all_prereleases=selection_prefs.allow_all_prereleases,
+        )
+
+        return cls(
+            candidate_prefs=candidate_prefs,
+            link_collector=link_collector,
+            target_python=target_python,
+            allow_yanked=selection_prefs.allow_yanked,
+            format_control=selection_prefs.format_control,
+            ignore_requires_python=selection_prefs.ignore_requires_python,
+        )
+
+    @property
+    def target_python(self):
+        # type: () -> TargetPython
+        return self._target_python
+
+    @property
+    def search_scope(self):
+        # type: () -> SearchScope
+        return self._link_collector.search_scope
+
+    @search_scope.setter
+    def search_scope(self, search_scope):
+        # type: (SearchScope) -> None
+        self._link_collector.search_scope = search_scope
+
+    @property
+    def find_links(self):
+        # type: () -> List[str]
+        return self._link_collector.find_links
+
+    @property
+    def index_urls(self):
+        # type: () -> List[str]
+        return self.search_scope.index_urls
+
+    @property
+    def trusted_hosts(self):
+        # type: () -> Iterable[str]
+        for host_port in self._link_collector.session.pip_trusted_origins:
+            yield build_netloc(*host_port)
+
+    @property
+    def allow_all_prereleases(self):
+        # type: () -> bool
+        return self._candidate_prefs.allow_all_prereleases
+
+    def set_allow_all_prereleases(self):
+        # type: () -> None
+        self._candidate_prefs.allow_all_prereleases = True
+
+    @property
+    def prefer_binary(self):
+        # type: () -> bool
+        return self._candidate_prefs.prefer_binary
+
+    def set_prefer_binary(self):
+        # type: () -> None
+        self._candidate_prefs.prefer_binary = True
+
+    def make_link_evaluator(self, project_name):
+        # type: (str) -> LinkEvaluator
+        canonical_name = canonicalize_name(project_name)
+        formats = self.format_control.get_allowed_formats(canonical_name)
+
+        return LinkEvaluator(
+            project_name=project_name,
+            canonical_name=canonical_name,
+            formats=formats,
+            target_python=self._target_python,
+            allow_yanked=self._allow_yanked,
+            ignore_requires_python=self._ignore_requires_python,
+        )
+
+    def _sort_links(self, links):
+        # type: (Iterable[Link]) -> List[Link]
+        """
+        Returns elements of links in order, non-egg links first, egg links
+        second, while eliminating duplicates
+        """
+        eggs, no_eggs = [], []
+        seen = set()  # type: Set[Link]
+        for link in links:
+            if link not in seen:
+                seen.add(link)
+                if link.egg_fragment:
+                    eggs.append(link)
+                else:
+                    no_eggs.append(link)
+        return no_eggs + eggs
+
+    def _log_skipped_link(self, link, reason):
+        # type: (Link, Text) -> None
+        if link not in self._logged_links:
+            # Mark this as a unicode string to prevent "UnicodeEncodeError:
+            # 'ascii' codec can't encode character" in Python 2 when
+            # the reason contains non-ascii characters.
+            #   Also, put the link at the end so the reason is more visible
+            # and because the link string is usually very long.
+            logger.debug(u'Skipping link: %s: %s', reason, link)
+            self._logged_links.add(link)
+
+    def get_install_candidate(self, link_evaluator, link):
+        # type: (LinkEvaluator, Link) -> Optional[InstallationCandidate]
+        """
+        If the link is a candidate for install, convert it to an
+        InstallationCandidate and return it. Otherwise, return None.
+        """
+        is_candidate, result = link_evaluator.evaluate_link(link)
+        if not is_candidate:
+            if result:
+                self._log_skipped_link(link, reason=result)
+            return None
+
+        return InstallationCandidate(
+            name=link_evaluator.project_name,
+            link=link,
+            # Convert the Text result to str since InstallationCandidate
+            # accepts str.
+            version=str(result),
+        )
+
+    def evaluate_links(self, link_evaluator, links):
+        # type: (LinkEvaluator, Iterable[Link]) -> List[InstallationCandidate]
+        """
+        Convert links that are candidates to InstallationCandidate objects.
+        """
+        candidates = []
+        for link in self._sort_links(links):
+            candidate = self.get_install_candidate(link_evaluator, link)
+            if candidate is not None:
+                candidates.append(candidate)
+
+        return candidates
+
+    def process_project_url(self, project_url, link_evaluator):
+        # type: (Link, LinkEvaluator) -> List[InstallationCandidate]
+        logger.debug(
+            'Fetching project page and analyzing links: %s', project_url,
+        )
+        html_page = self._link_collector.fetch_page(project_url)
+        if html_page is None:
+            return []
+
+        page_links = list(parse_links(html_page))
+
+        with indent_log():
+            package_links = self.evaluate_links(
+                link_evaluator,
+                links=page_links,
+            )
+
+        return package_links
+
+    def find_all_candidates(self, project_name):
+        # type: (str) -> List[InstallationCandidate]
+        """Find all available InstallationCandidate for project_name
+
+        This checks index_urls and find_links.
+        All versions found are returned as an InstallationCandidate list.
+
+        See LinkEvaluator.evaluate_link() for details on which files
+        are accepted.
+        """
+        collected_links = self._link_collector.collect_links(project_name)
+
+        link_evaluator = self.make_link_evaluator(project_name)
+
+        find_links_versions = self.evaluate_links(
+            link_evaluator,
+            links=collected_links.find_links,
+        )
+
+        page_versions = []
+        for project_url in collected_links.project_urls:
+            package_links = self.process_project_url(
+                project_url, link_evaluator=link_evaluator,
+            )
+            page_versions.extend(package_links)
+
+        file_versions = self.evaluate_links(
+            link_evaluator,
+            links=collected_links.files,
+        )
+        if file_versions:
+            file_versions.sort(reverse=True)
+            logger.debug(
+                'Local files found: %s',
+                ', '.join([
+                    url_to_path(candidate.link.url)
+                    for candidate in file_versions
+                ])
+            )
+
+        # This is an intentional priority ordering
+        return file_versions + find_links_versions + page_versions
+
+    def make_candidate_evaluator(
+        self,
+        project_name,    # type: str
+        specifier=None,  # type: Optional[specifiers.BaseSpecifier]
+        hashes=None,     # type: Optional[Hashes]
+    ):
+        # type: (...) -> CandidateEvaluator
+        """Create a CandidateEvaluator object to use.
+        """
+        candidate_prefs = self._candidate_prefs
+        return CandidateEvaluator.create(
+            project_name=project_name,
+            target_python=self._target_python,
+            prefer_binary=candidate_prefs.prefer_binary,
+            allow_all_prereleases=candidate_prefs.allow_all_prereleases,
+            specifier=specifier,
+            hashes=hashes,
+        )
+
+    def find_best_candidate(
+        self,
+        project_name,       # type: str
+        specifier=None,     # type: Optional[specifiers.BaseSpecifier]
+        hashes=None,        # type: Optional[Hashes]
+    ):
+        # type: (...) -> BestCandidateResult
+        """Find matches for the given project and specifier.
+
+        :param specifier: An optional object implementing `filter`
+            (e.g. `packaging.specifiers.SpecifierSet`) to filter applicable
+            versions.
+
+        :return: A `BestCandidateResult` instance.
+        """
+        candidates = self.find_all_candidates(project_name)
+        candidate_evaluator = self.make_candidate_evaluator(
+            project_name=project_name,
+            specifier=specifier,
+            hashes=hashes,
+        )
+        return candidate_evaluator.compute_best_candidate(candidates)
+
+    def find_requirement(self, req, upgrade):
+        # type: (InstallRequirement, bool) -> Optional[InstallationCandidate]
+        """Try to find a Link matching req
+
+        Expects req, an InstallRequirement and upgrade, a boolean
+        Returns a InstallationCandidate if found,
+        Raises DistributionNotFound or BestVersionAlreadyInstalled otherwise
+        """
+        hashes = req.hashes(trust_internet=False)
+        best_candidate_result = self.find_best_candidate(
+            req.name, specifier=req.specifier, hashes=hashes,
+        )
+        best_candidate = best_candidate_result.best_candidate
+
+        installed_version = None    # type: Optional[_BaseVersion]
+        if req.satisfied_by is not None:
+            installed_version = parse_version(req.satisfied_by.version)
+
+        def _format_versions(cand_iter):
+            # type: (Iterable[InstallationCandidate]) -> str
+            # This repeated parse_version and str() conversion is needed to
+            # handle different vendoring sources from pip and pkg_resources.
+            # If we stop using the pkg_resources provided specifier and start
+            # using our own, we can drop the cast to str().
+            return ", ".join(sorted(
+                {str(c.version) for c in cand_iter},
+                key=parse_version,
+            )) or "none"
+
+        if installed_version is None and best_candidate is None:
+            logger.critical(
+                'Could not find a version that satisfies the requirement %s '
+                '(from versions: %s)',
+                req,
+                _format_versions(best_candidate_result.iter_all()),
+            )
+
+            raise DistributionNotFound(
+                'No matching distribution found for {}'.format(
+                    req)
+            )
+
+        best_installed = False
+        if installed_version and (
+                best_candidate is None or
+                best_candidate.version <= installed_version):
+            best_installed = True
+
+        if not upgrade and installed_version is not None:
+            if best_installed:
+                logger.debug(
+                    'Existing installed version (%s) is most up-to-date and '
+                    'satisfies requirement',
+                    installed_version,
+                )
+            else:
+                logger.debug(
+                    'Existing installed version (%s) satisfies requirement '
+                    '(most up-to-date version is %s)',
+                    installed_version,
+                    best_candidate.version,
+                )
+            return None
+
+        if best_installed:
+            # We have an existing version, and its the best version
+            logger.debug(
+                'Installed version (%s) is most up-to-date (past versions: '
+                '%s)',
+                installed_version,
+                _format_versions(best_candidate_result.iter_applicable()),
+            )
+            raise BestVersionAlreadyInstalled
+
+        logger.debug(
+            'Using version %s (newest of versions: %s)',
+            best_candidate.version,
+            _format_versions(best_candidate_result.iter_applicable()),
+        )
+        return best_candidate
+
+
+def _find_name_version_sep(fragment, canonical_name):
+    # type: (str, str) -> int
+    """Find the separator's index based on the package's canonical name.
+
+    :param fragment: A <package>+<version> filename "fragment" (stem) or
+        egg fragment.
+    :param canonical_name: The package's canonical name.
+
+    This function is needed since the canonicalized name does not necessarily
+    have the same length as the egg info's name part. An example::
+
+    >>> fragment = 'foo__bar-1.0'
+    >>> canonical_name = 'foo-bar'
+    >>> _find_name_version_sep(fragment, canonical_name)
+    8
+    """
+    # Project name and version must be separated by one single dash. Find all
+    # occurrences of dashes; if the string in front of it matches the canonical
+    # name, this is the one separating the name and version parts.
+    for i, c in enumerate(fragment):
+        if c != "-":
+            continue
+        if canonicalize_name(fragment[:i]) == canonical_name:
+            return i
+    raise ValueError("{} does not match {}".format(fragment, canonical_name))
+
+
+def _extract_version_from_fragment(fragment, canonical_name):
+    # type: (str, str) -> Optional[str]
+    """Parse the version string from a <package>+<version> filename
+    "fragment" (stem) or egg fragment.
+
+    :param fragment: The string to parse. E.g. foo-2.1
+    :param canonical_name: The canonicalized name of the package this
+        belongs to.
+    """
+    try:
+        version_start = _find_name_version_sep(fragment, canonical_name) + 1
+    except ValueError:
+        return None
+    version = fragment[version_start:]
+    if not version:
+        return None
+    return version

venv/Lib/site-packages/pip/_internal/main.py

@@ -0,0 +1,16 @@
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+
+if MYPY_CHECK_RUNNING:
+    from typing import Optional, List
+
+
+def main(args=None):
+    # type: (Optional[List[str]]) -> int
+    """This is preserved for old console scripts that may still be referencing
+    it.
+
+    For additional details, see https://github.com/pypa/pip/issues/7498.
+    """
+    from pip._internal.utils.entrypoints import _wrapper
+
+    return _wrapper(args)

venv/Lib/site-packages/pip/_internal/models/candidate.py

@@ -0,0 +1,38 @@
+from pip._vendor.packaging.version import parse as parse_version
+
+from pip._internal.utils.models import KeyBasedCompareMixin
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+
+if MYPY_CHECK_RUNNING:
+    from pip._vendor.packaging.version import _BaseVersion
+    from pip._internal.models.link import Link
+
+
+class InstallationCandidate(KeyBasedCompareMixin):
+    """Represents a potential "candidate" for installation.
+    """
+
+    __slots__ = ["name", "version", "link"]
+
+    def __init__(self, name, version, link):
+        # type: (str, str, Link) -> None
+        self.name = name
+        self.version = parse_version(version)  # type: _BaseVersion
+        self.link = link
+
+        super(InstallationCandidate, self).__init__(
+            key=(self.name, self.version, self.link),
+            defining_class=InstallationCandidate
+        )
+
+    def __repr__(self):
+        # type: () -> str
+        return "<InstallationCandidate({!r}, {!r}, {!r})>".format(
+            self.name, self.version, self.link,
+        )
+
+    def __str__(self):
+        # type: () -> str
+        return '{!r} candidate (version {} at {})'.format(
+            self.name, self.version, self.link,
+        )

venv/Lib/site-packages/pip/_internal/models/direct_url.py

@@ -0,0 +1,245 @@
+""" PEP 610 """
+import json
+import re
+
+from pip._vendor import six
+from pip._vendor.six.moves.urllib import parse as urllib_parse
+
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+
+if MYPY_CHECK_RUNNING:
+    from typing import (
+        Any, Dict, Iterable, Optional, Type, TypeVar, Union
+    )
+
+    T = TypeVar("T")
+
+
+DIRECT_URL_METADATA_NAME = "direct_url.json"
+ENV_VAR_RE = re.compile(r"^\$\{[A-Za-z0-9-_]+\}(:\$\{[A-Za-z0-9-_]+\})?$")
+
+__all__ = [
+    "DirectUrl",
+    "DirectUrlValidationError",
+    "DirInfo",
+    "ArchiveInfo",
+    "VcsInfo",
+]
+
+
+class DirectUrlValidationError(Exception):
+    pass
+
+
+def _get(d, expected_type, key, default=None):
+    # type: (Dict[str, Any], Type[T], str, Optional[T]) -> Optional[T]
+    """Get value from dictionary and verify expected type."""
+    if key not in d:
+        return default
+    value = d[key]
+    if six.PY2 and expected_type is str:
+        expected_type = six.string_types  # type: ignore
+    if not isinstance(value, expected_type):
+        raise DirectUrlValidationError(
+            "{!r} has unexpected type for {} (expected {})".format(
+                value, key, expected_type
+            )
+        )
+    return value
+
+
+def _get_required(d, expected_type, key, default=None):
+    # type: (Dict[str, Any], Type[T], str, Optional[T]) -> T
+    value = _get(d, expected_type, key, default)
+    if value is None:
+        raise DirectUrlValidationError("{} must have a value".format(key))
+    return value
+
+
+def _exactly_one_of(infos):
+    # type: (Iterable[Optional[InfoType]]) -> InfoType
+    infos = [info for info in infos if info is not None]
+    if not infos:
+        raise DirectUrlValidationError(
+            "missing one of archive_info, dir_info, vcs_info"
+        )
+    if len(infos) > 1:
+        raise DirectUrlValidationError(
+            "more than one of archive_info, dir_info, vcs_info"
+        )
+    assert infos[0] is not None
+    return infos[0]
+
+
+def _filter_none(**kwargs):
+    # type: (Any) -> Dict[str, Any]
+    """Make dict excluding None values."""
+    return {k: v for k, v in kwargs.items() if v is not None}
+
+
+class VcsInfo(object):
+    name = "vcs_info"
+
+    def __init__(
+        self,
+        vcs,  # type: str
+        commit_id,  # type: str
+        requested_revision=None,  # type: Optional[str]
+        resolved_revision=None,  # type: Optional[str]
+        resolved_revision_type=None,  # type: Optional[str]
+    ):
+        self.vcs = vcs
+        self.requested_revision = requested_revision
+        self.commit_id = commit_id
+        self.resolved_revision = resolved_revision
+        self.resolved_revision_type = resolved_revision_type
+
+    @classmethod
+    def _from_dict(cls, d):
+        # type: (Optional[Dict[str, Any]]) -> Optional[VcsInfo]
+        if d is None:
+            return None
+        return cls(
+            vcs=_get_required(d, str, "vcs"),
+            commit_id=_get_required(d, str, "commit_id"),
+            requested_revision=_get(d, str, "requested_revision"),
+            resolved_revision=_get(d, str, "resolved_revision"),
+            resolved_revision_type=_get(d, str, "resolved_revision_type"),
+        )
+
+    def _to_dict(self):
+        # type: () -> Dict[str, Any]
+        return _filter_none(
+            vcs=self.vcs,
+            requested_revision=self.requested_revision,
+            commit_id=self.commit_id,
+            resolved_revision=self.resolved_revision,
+            resolved_revision_type=self.resolved_revision_type,
+        )
+
+
+class ArchiveInfo(object):
+    name = "archive_info"
+
+    def __init__(
+        self,
+        hash=None,  # type: Optional[str]
+    ):
+        self.hash = hash
+
+    @classmethod
+    def _from_dict(cls, d):
+        # type: (Optional[Dict[str, Any]]) -> Optional[ArchiveInfo]
+        if d is None:
+            return None
+        return cls(hash=_get(d, str, "hash"))
+
+    def _to_dict(self):
+        # type: () -> Dict[str, Any]
+        return _filter_none(hash=self.hash)
+
+
+class DirInfo(object):
+    name = "dir_info"
+
+    def __init__(
+        self,
+        editable=False,  # type: bool
+    ):
+        self.editable = editable
+
+    @classmethod
+    def _from_dict(cls, d):
+        # type: (Optional[Dict[str, Any]]) -> Optional[DirInfo]
+        if d is None:
+            return None
+        return cls(
+            editable=_get_required(d, bool, "editable", default=False)
+        )
+
+    def _to_dict(self):
+        # type: () -> Dict[str, Any]
+        return _filter_none(editable=self.editable or None)
+
+
+if MYPY_CHECK_RUNNING:
+    InfoType = Union[ArchiveInfo, DirInfo, VcsInfo]
+
+
+class DirectUrl(object):
+
+    def __init__(
+        self,
+        url,  # type: str
+        info,  # type: InfoType
+        subdirectory=None,  # type: Optional[str]
+    ):
+        self.url = url
+        self.info = info
+        self.subdirectory = subdirectory
+
+    def _remove_auth_from_netloc(self, netloc):
+        # type: (str) -> str
+        if "@" not in netloc:
+            return netloc
+        user_pass, netloc_no_user_pass = netloc.split("@", 1)
+        if (
+            isinstance(self.info, VcsInfo) and
+            self.info.vcs == "git" and
+            user_pass == "git"
+        ):
+            return netloc
+        if ENV_VAR_RE.match(user_pass):
+            return netloc
+        return netloc_no_user_pass
+
+    @property
+    def redacted_url(self):
+        # type: () -> str
+        """url with user:password part removed unless it is formed with
+        environment variables as specified in PEP 610, or it is ``git``
+        in the case of a git URL.
+        """
+        purl = urllib_parse.urlsplit(self.url)
+        netloc = self._remove_auth_from_netloc(purl.netloc)
+        surl = urllib_parse.urlunsplit(
+            (purl.scheme, netloc, purl.path, purl.query, purl.fragment)
+        )
+        return surl
+
+    def validate(self):
+        # type: () -> None
+        self.from_dict(self.to_dict())
+
+    @classmethod
+    def from_dict(cls, d):
+        # type: (Dict[str, Any]) -> DirectUrl
+        return DirectUrl(
+            url=_get_required(d, str, "url"),
+            subdirectory=_get(d, str, "subdirectory"),
+            info=_exactly_one_of(
+                [
+                    ArchiveInfo._from_dict(_get(d, dict, "archive_info")),
+                    DirInfo._from_dict(_get(d, dict, "dir_info")),
+                    VcsInfo._from_dict(_get(d, dict, "vcs_info")),
+                ]
+            ),
+        )
+
+    def to_dict(self):
+        # type: () -> Dict[str, Any]
+        res = _filter_none(
+            url=self.redacted_url,
+            subdirectory=self.subdirectory,
+        )
+        res[self.info.name] = self.info._to_dict()
+        return res
+
+    @classmethod
+    def from_json(cls, s):
+        # type: (str) -> DirectUrl
+        return cls.from_dict(json.loads(s))
+
+    def to_json(self):
+        # type: () -> str
+        return json.dumps(self.to_dict(), sort_keys=True)

venv/Lib/site-packages/pip/_internal/models/format_control.py

@@ -0,0 +1,92 @@
+from pip._vendor.packaging.utils import canonicalize_name
+
+from pip._internal.exceptions import CommandError
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+
+if MYPY_CHECK_RUNNING:
+    from typing import Optional, Set, FrozenSet
+
+
+class FormatControl(object):
+    """Helper for managing formats from which a package can be installed.
+    """
+
+    __slots__ = ["no_binary", "only_binary"]
+
+    def __init__(self, no_binary=None, only_binary=None):
+        # type: (Optional[Set[str]], Optional[Set[str]]) -> None
+        if no_binary is None:
+            no_binary = set()
+        if only_binary is None:
+            only_binary = set()
+
+        self.no_binary = no_binary
+        self.only_binary = only_binary
+
+    def __eq__(self, other):
+        # type: (object) -> bool
+        if not isinstance(other, self.__class__):
+            return NotImplemented
+
+        if self.__slots__ != other.__slots__:
+            return False
+
+        return all(
+            getattr(self, k) == getattr(other, k)
+            for k in self.__slots__
+        )
+
+    def __ne__(self, other):
+        # type: (object) -> bool
+        return not self.__eq__(other)
+
+    def __repr__(self):
+        # type: () -> str
+        return "{}({}, {})".format(
+            self.__class__.__name__,
+            self.no_binary,
+            self.only_binary
+        )
+
+    @staticmethod
+    def handle_mutual_excludes(value, target, other):
+        # type: (str, Set[str], Set[str]) -> None
+        if value.startswith('-'):
+            raise CommandError(
+                "--no-binary / --only-binary option requires 1 argument."
+            )
+        new = value.split(',')
+        while ':all:' in new:
+            other.clear()
+            target.clear()
+            target.add(':all:')
+            del new[:new.index(':all:') + 1]
+            # Without a none, we want to discard everything as :all: covers it
+            if ':none:' not in new:
+                return
+        for name in new:
+            if name == ':none:':
+                target.clear()
+                continue
+            name = canonicalize_name(name)
+            other.discard(name)
+            target.add(name)
+
+    def get_allowed_formats(self, canonical_name):
+        # type: (str) -> FrozenSet[str]
+        result = {"binary", "source"}
+        if canonical_name in self.only_binary:
+            result.discard('source')
+        elif canonical_name in self.no_binary:
+            result.discard('binary')
+        elif ':all:' in self.only_binary:
+            result.discard('source')
+        elif ':all:' in self.no_binary:
+            result.discard('binary')
+        return frozenset(result)
+
+    def disallow_binaries(self):
+        # type: () -> None
+        self.handle_mutual_excludes(
+            ':all:', self.no_binary, self.only_binary,
+        )

venv/Lib/site-packages/pip/_internal/models/link.py

@@ -0,0 +1,245 @@
+import os
+import posixpath
+import re
+
+from pip._vendor.six.moves.urllib import parse as urllib_parse
+
+from pip._internal.utils.filetypes import WHEEL_EXTENSION
+from pip._internal.utils.misc import (
+    redact_auth_from_url,
+    split_auth_from_netloc,
+    splitext,
+)
+from pip._internal.utils.models import KeyBasedCompareMixin
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+from pip._internal.utils.urls import path_to_url, url_to_path
+
+if MYPY_CHECK_RUNNING:
+    from typing import Optional, Text, Tuple, Union
+    from pip._internal.index.collector import HTMLPage
+    from pip._internal.utils.hashes import Hashes
+
+
+class Link(KeyBasedCompareMixin):
+    """Represents a parsed link from a Package Index's simple URL
+    """
+
+    __slots__ = [
+        "_parsed_url",
+        "_url",
+        "comes_from",
+        "requires_python",
+        "yanked_reason",
+        "cache_link_parsing",
+    ]
+
+    def __init__(
+        self,
+        url,                   # type: str
+        comes_from=None,       # type: Optional[Union[str, HTMLPage]]
+        requires_python=None,  # type: Optional[str]
+        yanked_reason=None,    # type: Optional[Text]
+        cache_link_parsing=True,  # type: bool
+    ):
+        # type: (...) -> None
+        """
+        :param url: url of the resource pointed to (href of the link)
+        :param comes_from: instance of HTMLPage where the link was found,
+            or string.
+        :param requires_python: String containing the `Requires-Python`
+            metadata field, specified in PEP 345. This may be specified by
+            a data-requires-python attribute in the HTML link tag, as
+            described in PEP 503.
+        :param yanked_reason: the reason the file has been yanked, if the
+            file has been yanked, or None if the file hasn't been yanked.
+            This is the value of the "data-yanked" attribute, if present, in
+            a simple repository HTML link. If the file has been yanked but
+            no reason was provided, this should be the empty string. See
+            PEP 592 for more information and the specification.
+        :param cache_link_parsing: A flag that is used elsewhere to determine
+                                   whether resources retrieved from this link
+                                   should be cached. PyPI index urls should
+                                   generally have this set to False, for
+                                   example.
+        """
+
+        # url can be a UNC windows share
+        if url.startswith('\\\\'):
+            url = path_to_url(url)
+
+        self._parsed_url = urllib_parse.urlsplit(url)
+        # Store the url as a private attribute to prevent accidentally
+        # trying to set a new value.
+        self._url = url
+
+        self.comes_from = comes_from
+        self.requires_python = requires_python if requires_python else None
+        self.yanked_reason = yanked_reason
+
+        super(Link, self).__init__(key=url, defining_class=Link)
+
+        self.cache_link_parsing = cache_link_parsing
+
+    def __str__(self):
+        # type: () -> str
+        if self.requires_python:
+            rp = ' (requires-python:{})'.format(self.requires_python)
+        else:
+            rp = ''
+        if self.comes_from:
+            return '{} (from {}){}'.format(
+                redact_auth_from_url(self._url), self.comes_from, rp)
+        else:
+            return redact_auth_from_url(str(self._url))
+
+    def __repr__(self):
+        # type: () -> str
+        return '<Link {}>'.format(self)
+
+    @property
+    def url(self):
+        # type: () -> str
+        return self._url
+
+    @property
+    def filename(self):
+        # type: () -> str
+        path = self.path.rstrip('/')
+        name = posixpath.basename(path)
+        if not name:
+            # Make sure we don't leak auth information if the netloc
+            # includes a username and password.
+            netloc, user_pass = split_auth_from_netloc(self.netloc)
+            return netloc
+
+        name = urllib_parse.unquote(name)
+        assert name, (
+            'URL {self._url!r} produced no filename'.format(**locals()))
+        return name
+
+    @property
+    def file_path(self):
+        # type: () -> str
+        return url_to_path(self.url)
+
+    @property
+    def scheme(self):
+        # type: () -> str
+        return self._parsed_url.scheme
+
+    @property
+    def netloc(self):
+        # type: () -> str
+        """
+        This can contain auth information.
+        """
+        return self._parsed_url.netloc
+
+    @property
+    def path(self):
+        # type: () -> str
+        return urllib_parse.unquote(self._parsed_url.path)
+
+    def splitext(self):
+        # type: () -> Tuple[str, str]
+        return splitext(posixpath.basename(self.path.rstrip('/')))
+
+    @property
+    def ext(self):
+        # type: () -> str
+        return self.splitext()[1]
+
+    @property
+    def url_without_fragment(self):
+        # type: () -> str
+        scheme, netloc, path, query, fragment = self._parsed_url
+        return urllib_parse.urlunsplit((scheme, netloc, path, query, None))
+
+    _egg_fragment_re = re.compile(r'[#&]egg=([^&]*)')
+
+    @property
+    def egg_fragment(self):
+        # type: () -> Optional[str]
+        match = self._egg_fragment_re.search(self._url)
+        if not match:
+            return None
+        return match.group(1)
+
+    _subdirectory_fragment_re = re.compile(r'[#&]subdirectory=([^&]*)')
+
+    @property
+    def subdirectory_fragment(self):
+        # type: () -> Optional[str]
+        match = self._subdirectory_fragment_re.search(self._url)
+        if not match:
+            return None
+        return match.group(1)
+
+    _hash_re = re.compile(
+        r'(sha1|sha224|sha384|sha256|sha512|md5)=([a-f0-9]+)'
+    )
+
+    @property
+    def hash(self):
+        # type: () -> Optional[str]
+        match = self._hash_re.search(self._url)
+        if match:
+            return match.group(2)
+        return None
+
+    @property
+    def hash_name(self):
+        # type: () -> Optional[str]
+        match = self._hash_re.search(self._url)
+        if match:
+            return match.group(1)
+        return None
+
+    @property
+    def show_url(self):
+        # type: () -> str
+        return posixpath.basename(self._url.split('#', 1)[0].split('?', 1)[0])
+
+    @property
+    def is_file(self):
+        # type: () -> bool
+        return self.scheme == 'file'
+
+    def is_existing_dir(self):
+        # type: () -> bool
+        return self.is_file and os.path.isdir(self.file_path)
+
+    @property
+    def is_wheel(self):
+        # type: () -> bool
+        return self.ext == WHEEL_EXTENSION
+
+    @property
+    def is_vcs(self):
+        # type: () -> bool
+        from pip._internal.vcs import vcs
+
+        return self.scheme in vcs.all_schemes
+
+    @property
+    def is_yanked(self):
+        # type: () -> bool
+        return self.yanked_reason is not None
+
+    @property
+    def has_hash(self):
+        # type: () -> bool
+        return self.hash_name is not None
+
+    def is_hash_allowed(self, hashes):
+        # type: (Optional[Hashes]) -> bool
+        """
+        Return True if the link has a hash and it is allowed.
+        """
+        if hashes is None or not self.has_hash:
+            return False
+        # Assert non-None so mypy knows self.hash_name and self.hash are str.
+        assert self.hash_name is not None
+        assert self.hash is not None
+
+        return hashes.is_hash_allowed(self.hash_name, hex_digest=self.hash)

venv/Lib/site-packages/pip/_internal/models/scheme.py

@@ -0,0 +1,31 @@
+"""
+For types associated with installation schemes.
+
+For a general overview of available schemes and their context, see
+https://docs.python.org/3/install/index.html#alternate-installation.
+"""
+
+
+SCHEME_KEYS = ['platlib', 'purelib', 'headers', 'scripts', 'data']
+
+
+class Scheme(object):
+    """A Scheme holds paths which are used as the base directories for
+    artifacts associated with a Python package.
+    """
+
+    __slots__ = SCHEME_KEYS
+
+    def __init__(
+        self,
+        platlib,  # type: str
+        purelib,  # type: str
+        headers,  # type: str
+        scripts,  # type: str
+        data,  # type: str
+    ):
+        self.platlib = platlib
+        self.purelib = purelib
+        self.headers = headers
+        self.scripts = scripts
+        self.data = data

venv/Lib/site-packages/pip/_internal/models/search_scope.py

@@ -0,0 +1,135 @@
+import itertools
+import logging
+import os
+import posixpath
+
+from pip._vendor.packaging.utils import canonicalize_name
+from pip._vendor.six.moves.urllib import parse as urllib_parse
+
+from pip._internal.models.index import PyPI
+from pip._internal.utils.compat import has_tls
+from pip._internal.utils.misc import normalize_path, redact_auth_from_url
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+
+if MYPY_CHECK_RUNNING:
+    from typing import List
+
+
+logger = logging.getLogger(__name__)
+
+
+class SearchScope(object):
+
+    """
+    Encapsulates the locations that pip is configured to search.
+    """
+
+    __slots__ = ["find_links", "index_urls"]
+
+    @classmethod
+    def create(
+        cls,
+        find_links,  # type: List[str]
+        index_urls,  # type: List[str]
+    ):
+        # type: (...) -> SearchScope
+        """
+        Create a SearchScope object after normalizing the `find_links`.
+        """
+        # Build find_links. If an argument starts with ~, it may be
+        # a local file relative to a home directory. So try normalizing
+        # it and if it exists, use the normalized version.
+        # This is deliberately conservative - it might be fine just to
+        # blindly normalize anything starting with a ~...
+        built_find_links = []  # type: List[str]
+        for link in find_links:
+            if link.startswith('~'):
+                new_link = normalize_path(link)
+                if os.path.exists(new_link):
+                    link = new_link
+            built_find_links.append(link)
+
+        # If we don't have TLS enabled, then WARN if anyplace we're looking
+        # relies on TLS.
+        if not has_tls():
+            for link in itertools.chain(index_urls, built_find_links):
+                parsed = urllib_parse.urlparse(link)
+                if parsed.scheme == 'https':
+                    logger.warning(
+                        'pip is configured with locations that require '
+                        'TLS/SSL, however the ssl module in Python is not '
+                        'available.'
+                    )
+                    break
+
+        return cls(
+            find_links=built_find_links,
+            index_urls=index_urls,
+        )
+
+    def __init__(
+        self,
+        find_links,  # type: List[str]
+        index_urls,  # type: List[str]
+    ):
+        # type: (...) -> None
+        self.find_links = find_links
+        self.index_urls = index_urls
+
+    def get_formatted_locations(self):
+        # type: () -> str
+        lines = []
+        redacted_index_urls = []
+        if self.index_urls and self.index_urls != [PyPI.simple_url]:
+            for url in self.index_urls:
+
+                redacted_index_url = redact_auth_from_url(url)
+
+                # Parse the URL
+                purl = urllib_parse.urlsplit(redacted_index_url)
+
+                # URL is generally invalid if scheme and netloc is missing
+                # there are issues with Python and URL parsing, so this test
+                # is a bit crude. See bpo-20271, bpo-23505. Python doesn't
+                # always parse invalid URLs correctly - it should raise
+                # exceptions for malformed URLs
+                if not purl.scheme and not purl.netloc:
+                    logger.warning(
+                        'The index url "%s" seems invalid, '
+                        'please provide a scheme.', redacted_index_url)
+
+                redacted_index_urls.append(redacted_index_url)
+
+            lines.append('Looking in indexes: {}'.format(
+                ', '.join(redacted_index_urls)))
+
+        if self.find_links:
+            lines.append(
+                'Looking in links: {}'.format(', '.join(
+                    redact_auth_from_url(url) for url in self.find_links))
+            )
+        return '\n'.join(lines)
+
+    def get_index_urls_locations(self, project_name):
+        # type: (str) -> List[str]
+        """Returns the locations found via self.index_urls
+
+        Checks the url_name on the main (first in the list) index and
+        use this url_name to produce all locations
+        """
+
+        def mkurl_pypi_url(url):
+            # type: (str) -> str
+            loc = posixpath.join(
+                url,
+                urllib_parse.quote(canonicalize_name(project_name)))
+            # For maximum compatibility with easy_install, ensure the path
+            # ends in a trailing slash.  Although this isn't in the spec
+            # (and PyPI can handle it without the slash) some other index
+            # implementations might break if they relied on easy_install's
+            # behavior.
+            if not loc.endswith('/'):
+                loc = loc + '/'
+            return loc
+
+        return [mkurl_pypi_url(url) for url in self.index_urls]

venv/Lib/site-packages/pip/_internal/models/selection_prefs.py

@@ -0,0 +1,49 @@
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+
+if MYPY_CHECK_RUNNING:
+    from typing import Optional
+    from pip._internal.models.format_control import FormatControl
+
+
+class SelectionPreferences(object):
+    """
+    Encapsulates the candidate selection preferences for downloading
+    and installing files.
+    """
+
+    __slots__ = ['allow_yanked', 'allow_all_prereleases', 'format_control',
+                 'prefer_binary', 'ignore_requires_python']
+
+    # Don't include an allow_yanked default value to make sure each call
+    # site considers whether yanked releases are allowed. This also causes
+    # that decision to be made explicit in the calling code, which helps
+    # people when reading the code.
+    def __init__(
+        self,
+        allow_yanked,  # type: bool
+        allow_all_prereleases=False,  # type: bool
+        format_control=None,          # type: Optional[FormatControl]
+        prefer_binary=False,          # type: bool
+        ignore_requires_python=None,  # type: Optional[bool]
+    ):
+        # type: (...) -> None
+        """Create a SelectionPreferences object.
+
+        :param allow_yanked: Whether files marked as yanked (in the sense
+            of PEP 592) are permitted to be candidates for install.
+        :param format_control: A FormatControl object or None. Used to control
+            the selection of source packages / binary packages when consulting
+            the index and links.
+        :param prefer_binary: Whether to prefer an old, but valid, binary
+            dist over a new source dist.
+        :param ignore_requires_python: Whether to ignore incompatible
+            "Requires-Python" values in links. Defaults to False.
+        """
+        if ignore_requires_python is None:
+            ignore_requires_python = False
+
+        self.allow_yanked = allow_yanked
+        self.allow_all_prereleases = allow_all_prereleases
+        self.format_control = format_control
+        self.prefer_binary = prefer_binary
+        self.ignore_requires_python = ignore_requires_python

venv/Lib/site-packages/pip/_internal/models/target_python.py

@@ -0,0 +1,120 @@
+import sys
+
+from pip._internal.utils.compatibility_tags import (
+    get_supported,
+    version_info_to_nodot,
+)
+from pip._internal.utils.misc import normalize_version_info
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+
+if MYPY_CHECK_RUNNING:
+    from typing import List, Optional, Tuple
+
+    from pip._vendor.packaging.tags import Tag
+
+
+class TargetPython(object):
+
+    """
+    Encapsulates the properties of a Python interpreter one is targeting
+    for a package install, download, etc.
+    """
+
+    __slots__ = [
+        "_given_py_version_info",
+        "abi",
+        "implementation",
+        "platform",
+        "py_version",
+        "py_version_info",
+        "_valid_tags",
+    ]
+
+    def __init__(
+        self,
+        platform=None,  # type: Optional[str]
+        py_version_info=None,  # type: Optional[Tuple[int, ...]]
+        abi=None,  # type: Optional[str]
+        implementation=None,  # type: Optional[str]
+    ):
+        # type: (...) -> None
+        """
+        :param platform: A string or None. If None, searches for packages
+            that are supported by the current system. Otherwise, will find
+            packages that can be built on the platform passed in. These
+            packages will only be downloaded for distribution: they will
+            not be built locally.
+        :param py_version_info: An optional tuple of ints representing the
+            Python version information to use (e.g. `sys.version_info[:3]`).
+            This can have length 1, 2, or 3 when provided.
+        :param abi: A string or None. This is passed to compatibility_tags.py's
+            get_supported() function as is.
+        :param implementation: A string or None. This is passed to
+            compatibility_tags.py's get_supported() function as is.
+        """
+        # Store the given py_version_info for when we call get_supported().
+        self._given_py_version_info = py_version_info
+
+        if py_version_info is None:
+            py_version_info = sys.version_info[:3]
+        else:
+            py_version_info = normalize_version_info(py_version_info)
+
+        py_version = '.'.join(map(str, py_version_info[:2]))
+
+        self.abi = abi
+        self.implementation = implementation
+        self.platform = platform
+        self.py_version = py_version
+        self.py_version_info = py_version_info
+
+        # This is used to cache the return value of get_tags().
+        self._valid_tags = None  # type: Optional[List[Tag]]
+
+    def format_given(self):
+        # type: () -> str
+        """
+        Format the given, non-None attributes for display.
+        """
+        display_version = None
+        if self._given_py_version_info is not None:
+            display_version = '.'.join(
+                str(part) for part in self._given_py_version_info
+            )
+
+        key_values = [
+            ('platform', self.platform),
+            ('version_info', display_version),
+            ('abi', self.abi),
+            ('implementation', self.implementation),
+        ]
+        return ' '.join(
+            '{}={!r}'.format(key, value) for key, value in key_values
+            if value is not None
+        )
+
+    def get_tags(self):
+        # type: () -> List[Tag]
+        """
+        Return the supported PEP 425 tags to check wheel candidates against.
+
+        The tags are returned in order of preference (most preferred first).
+        """
+        if self._valid_tags is None:
+            # Pass versions=None if no py_version_info was given since
+            # versions=None uses special default logic.
+            py_version_info = self._given_py_version_info
+            if py_version_info is None:
+                version = None
+            else:
+                version = version_info_to_nodot(py_version_info)
+
+            tags = get_supported(
+                version=version,
+                platform=self.platform,
+                abi=self.abi,
+                impl=self.implementation,
+            )
+            self._valid_tags = tags
+
+        return self._valid_tags

venv/Lib/site-packages/pip/_internal/models/wheel.py

@@ -0,0 +1,78 @@
+"""Represents a wheel file and provides access to the various parts of the
+name that have meaning.
+"""
+import re
+
+from pip._vendor.packaging.tags import Tag
+
+from pip._internal.exceptions import InvalidWheelFilename
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+
+if MYPY_CHECK_RUNNING:
+    from typing import List
+
+
+class Wheel(object):
+    """A wheel file"""
+
+    wheel_file_re = re.compile(
+        r"""^(?P<namever>(?P<name>.+?)-(?P<ver>.*?))
+        ((-(?P<build>\d[^-]*?))?-(?P<pyver>.+?)-(?P<abi>.+?)-(?P<plat>.+?)
+        \.whl|\.dist-info)$""",
+        re.VERBOSE
+    )
+
+    def __init__(self, filename):
+        # type: (str) -> None
+        """
+        :raises InvalidWheelFilename: when the filename is invalid for a wheel
+        """
+        wheel_info = self.wheel_file_re.match(filename)
+        if not wheel_info:
+            raise InvalidWheelFilename(
+                "{} is not a valid wheel filename.".format(filename)
+            )
+        self.filename = filename
+        self.name = wheel_info.group('name').replace('_', '-')
+        # we'll assume "_" means "-" due to wheel naming scheme
+        # (https://github.com/pypa/pip/issues/1150)
+        self.version = wheel_info.group('ver').replace('_', '-')
+        self.build_tag = wheel_info.group('build')
+        self.pyversions = wheel_info.group('pyver').split('.')
+        self.abis = wheel_info.group('abi').split('.')
+        self.plats = wheel_info.group('plat').split('.')
+
+        # All the tag combinations from this file
+        self.file_tags = {
+            Tag(x, y, z) for x in self.pyversions
+            for y in self.abis for z in self.plats
+        }
+
+    def get_formatted_file_tags(self):
+        # type: () -> List[str]
+        """Return the wheel's tags as a sorted list of strings."""
+        return sorted(str(tag) for tag in self.file_tags)
+
+    def support_index_min(self, tags):
+        # type: (List[Tag]) -> int
+        """Return the lowest index that one of the wheel's file_tag combinations
+        achieves in the given list of supported tags.
+
+        For example, if there are 8 supported tags and one of the file tags
+        is first in the list, then return 0.
+
+        :param tags: the PEP 425 tags to check the wheel against, in order
+            with most preferred first.
+
+        :raises ValueError: If none of the wheel's file tags match one of
+            the supported tags.
+        """
+        return min(tags.index(tag) for tag in self.file_tags if tag in tags)
+
+    def supported(self, tags):
+        # type: (List[Tag]) -> bool
+        """Return whether the wheel is compatible with one of the given tags.
+
+        :param tags: the PEP 425 tags to check the wheel against.
+        """
+        return not self.file_tags.isdisjoint(tags)

venv/Lib/site-packages/pip/_internal/network/__init__.py

@@ -0,0 +1,2 @@
+"""Contains purely network-related utilities.
+"""

venv/Lib/site-packages/pip/_internal/network/auth.py

@@ -0,0 +1,310 @@
+"""Network Authentication Helpers
+
+Contains interface (MultiDomainBasicAuth) and associated glue code for
+providing credentials in the context of network requests.
+"""
+
+import logging
+
+from pip._vendor.requests.auth import AuthBase, HTTPBasicAuth
+from pip._vendor.requests.utils import get_netrc_auth
+from pip._vendor.six.moves.urllib import parse as urllib_parse
+
+from pip._internal.utils.misc import (
+    ask,
+    ask_input,
+    ask_password,
+    remove_auth_from_url,
+    split_auth_netloc_from_url,
+)
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+
+if MYPY_CHECK_RUNNING:
+    from typing import Dict, Optional, Tuple, List, Any
+
+    from pip._internal.vcs.versioncontrol import AuthInfo
+
+    from pip._vendor.requests.models import Response, Request
+
+    Credentials = Tuple[str, str, str]
+
+logger = logging.getLogger(__name__)
+
+try:
+    import keyring  # noqa
+except ImportError:
+    keyring = None
+except Exception as exc:
+    logger.warning(
+        "Keyring is skipped due to an exception: %s", str(exc),
+    )
+    keyring = None
+
+
+def get_keyring_auth(url, username):
+    # type: (str, str) -> Optional[AuthInfo]
+    """Return the tuple auth for a given url from keyring."""
+    global keyring
+    if not url or not keyring:
+        return None
+
+    try:
+        try:
+            get_credential = keyring.get_credential
+        except AttributeError:
+            pass
+        else:
+            logger.debug("Getting credentials from keyring for %s", url)
+            cred = get_credential(url, username)
+            if cred is not None:
+                return cred.username, cred.password
+            return None
+
+        if username:
+            logger.debug("Getting password from keyring for %s", url)
+            password = keyring.get_password(url, username)
+            if password:
+                return username, password
+
+    except Exception as exc:
+        logger.warning(
+            "Keyring is skipped due to an exception: %s", str(exc),
+        )
+        keyring = None
+    return None
+
+
+class MultiDomainBasicAuth(AuthBase):
+
+    def __init__(self, prompting=True, index_urls=None):
+        # type: (bool, Optional[List[str]]) -> None
+        self.prompting = prompting
+        self.index_urls = index_urls
+        self.passwords = {}  # type: Dict[str, AuthInfo]
+        # When the user is prompted to enter credentials and keyring is
+        # available, we will offer to save them. If the user accepts,
+        # this value is set to the credentials they entered. After the
+        # request authenticates, the caller should call
+        # ``save_credentials`` to save these.
+        self._credentials_to_save = None  # type: Optional[Credentials]
+
+    def _get_index_url(self, url):
+        # type: (str) -> Optional[str]
+        """Return the original index URL matching the requested URL.
+
+        Cached or dynamically generated credentials may work against
+        the original index URL rather than just the netloc.
+
+        The provided url should have had its username and password
+        removed already. If the original index url had credentials then
+        they will be included in the return value.
+
+        Returns None if no matching index was found, or if --no-index
+        was specified by the user.
+        """
+        if not url or not self.index_urls:
+            return None
+
+        for u in self.index_urls:
+            prefix = remove_auth_from_url(u).rstrip("/") + "/"
+            if url.startswith(prefix):
+                return u
+        return None
+
+    def _get_new_credentials(self, original_url, allow_netrc=True,
+                             allow_keyring=True):
+        # type: (str, bool, bool) -> AuthInfo
+        """Find and return credentials for the specified URL."""
+        # Split the credentials and netloc from the url.
+        url, netloc, url_user_password = split_auth_netloc_from_url(
+            original_url,
+        )
+
+        # Start with the credentials embedded in the url
+        username, password = url_user_password
+        if username is not None and password is not None:
+            logger.debug("Found credentials in url for %s", netloc)
+            return url_user_password
+
+        # Find a matching index url for this request
+        index_url = self._get_index_url(url)
+        if index_url:
+            # Split the credentials from the url.
+            index_info = split_auth_netloc_from_url(index_url)
+            if index_info:
+                index_url, _, index_url_user_password = index_info
+                logger.debug("Found index url %s", index_url)
+
+        # If an index URL was found, try its embedded credentials
+        if index_url and index_url_user_password[0] is not None:
+            username, password = index_url_user_password
+            if username is not None and password is not None:
+                logger.debug("Found credentials in index url for %s", netloc)
+                return index_url_user_password
+
+        # Get creds from netrc if we still don't have them
+        if allow_netrc:
+            netrc_auth = get_netrc_auth(original_url)
+            if netrc_auth:
+                logger.debug("Found credentials in netrc for %s", netloc)
+                return netrc_auth
+
+        # If we don't have a password and keyring is available, use it.
+        if allow_keyring:
+            # The index url is more specific than the netloc, so try it first
+            kr_auth = (
+                get_keyring_auth(index_url, username) or
+                get_keyring_auth(netloc, username)
+            )
+            if kr_auth:
+                logger.debug("Found credentials in keyring for %s", netloc)
+                return kr_auth
+
+        return username, password
+
+    def _get_url_and_credentials(self, original_url):
+        # type: (str) -> Tuple[str, Optional[str], Optional[str]]
+        """Return the credentials to use for the provided URL.
+
+        If allowed, netrc and keyring may be used to obtain the
+        correct credentials.
+
+        Returns (url_without_credentials, username, password). Note
+        that even if the original URL contains credentials, this
+        function may return a different username and password.
+        """
+        url, netloc, _ = split_auth_netloc_from_url(original_url)
+
+        # Use any stored credentials that we have for this netloc
+        username, password = self.passwords.get(netloc, (None, None))
+
+        if username is None and password is None:
+            # No stored credentials. Acquire new credentials without prompting
+            # the user. (e.g. from netrc, keyring, or the URL itself)
+            username, password = self._get_new_credentials(original_url)
+
+        if username is not None or password is not None:
+            # Convert the username and password if they're None, so that
+            # this netloc will show up as "cached" in the conditional above.
+            # Further, HTTPBasicAuth doesn't accept None, so it makes sense to
+            # cache the value that is going to be used.
+            username = username or ""
+            password = password or ""
+
+            # Store any acquired credentials.
+            self.passwords[netloc] = (username, password)
+
+        assert (
+            # Credentials were found
+            (username is not None and password is not None) or
+            # Credentials were not found
+            (username is None and password is None)
+        ), "Could not load credentials from url: {}".format(original_url)
+
+        return url, username, password
+
+    def __call__(self, req):
+        # type: (Request) -> Request
+        # Get credentials for this request
+        url, username, password = self._get_url_and_credentials(req.url)
+
+        # Set the url of the request to the url without any credentials
+        req.url = url
+
+        if username is not None and password is not None:
+            # Send the basic auth with this request
+            req = HTTPBasicAuth(username, password)(req)
+
+        # Attach a hook to handle 401 responses
+        req.register_hook("response", self.handle_401)
+
+        return req
+
+    # Factored out to allow for easy patching in tests
+    def _prompt_for_password(self, netloc):
+        # type: (str) -> Tuple[Optional[str], Optional[str], bool]
+        username = ask_input("User for {}: ".format(netloc))
+        if not username:
+            return None, None, False
+        auth = get_keyring_auth(netloc, username)
+        if auth and auth[0] is not None and auth[1] is not None:
+            return auth[0], auth[1], False
+        password = ask_password("Password: ")
+        return username, password, True
+
+    # Factored out to allow for easy patching in tests
+    def _should_save_password_to_keyring(self):
+        # type: () -> bool
+        if not keyring:
+            return False
+        return ask("Save credentials to keyring [y/N]: ", ["y", "n"]) == "y"
+
+    def handle_401(self, resp, **kwargs):
+        # type: (Response, **Any) -> Response
+        # We only care about 401 responses, anything else we want to just
+        #   pass through the actual response
+        if resp.status_code != 401:
+            return resp
+
+        # We are not able to prompt the user so simply return the response
+        if not self.prompting:
+            return resp
+
+        parsed = urllib_parse.urlparse(resp.url)
+
+        # Prompt the user for a new username and password
+        username, password, save = self._prompt_for_password(parsed.netloc)
+
+        # Store the new username and password to use for future requests
+        self._credentials_to_save = None
+        if username is not None and password is not None:
+            self.passwords[parsed.netloc] = (username, password)
+
+            # Prompt to save the password to keyring
+            if save and self._should_save_password_to_keyring():
+                self._credentials_to_save = (parsed.netloc, username, password)
+
+        # Consume content and release the original connection to allow our new
+        #   request to reuse the same one.
+        resp.content
+        resp.raw.release_conn()
+
+        # Add our new username and password to the request
+        req = HTTPBasicAuth(username or "", password or "")(resp.request)
+        req.register_hook("response", self.warn_on_401)
+
+        # On successful request, save the credentials that were used to
+        # keyring. (Note that if the user responded "no" above, this member
+        # is not set and nothing will be saved.)
+        if self._credentials_to_save:
+            req.register_hook("response", self.save_credentials)
+
+        # Send our new request
+        new_resp = resp.connection.send(req, **kwargs)
+        new_resp.history.append(resp)
+
+        return new_resp
+
+    def warn_on_401(self, resp, **kwargs):
+        # type: (Response, **Any) -> None
+        """Response callback to warn about incorrect credentials."""
+        if resp.status_code == 401:
+            logger.warning(
+                '401 Error, Credentials not correct for %s', resp.request.url,
+            )
+
+    def save_credentials(self, resp, **kwargs):
+        # type: (Response, **Any) -> None
+        """Response callback to save credentials on success."""
+        assert keyring is not None, "should never reach here without keyring"
+        if not keyring:
+            return
+
+        creds = self._credentials_to_save
+        self._credentials_to_save = None
+        if creds and resp.status_code < 400:
+            try:
+                logger.info('Saving credentials to keyring')
+                keyring.set_password(*creds)
+            except Exception:
+                logger.exception('Failed to save credentials')

venv/Lib/site-packages/pip/_internal/network/cache.py

@@ -0,0 +1,79 @@
+"""HTTP cache implementation.
+"""
+
+import os
+from contextlib import contextmanager
+
+from pip._vendor.cachecontrol.cache import BaseCache
+from pip._vendor.cachecontrol.caches import FileCache
+from pip._vendor.requests.models import Response
+
+from pip._internal.utils.filesystem import adjacent_tmp_file, replace
+from pip._internal.utils.misc import ensure_dir
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+
+if MYPY_CHECK_RUNNING:
+    from typing import Optional, Iterator
+
+
+def is_from_cache(response):
+    # type: (Response) -> bool
+    return getattr(response, "from_cache", False)
+
+
+@contextmanager
+def suppressed_cache_errors():
+    # type: () -> Iterator[None]
+    """If we can't access the cache then we can just skip caching and process
+    requests as if caching wasn't enabled.
+    """
+    try:
+        yield
+    except (OSError, IOError):
+        pass
+
+
+class SafeFileCache(BaseCache):
+    """
+    A file based cache which is safe to use even when the target directory may
+    not be accessible or writable.
+    """
+
+    def __init__(self, directory):
+        # type: (str) -> None
+        assert directory is not None, "Cache directory must not be None."
+        super(SafeFileCache, self).__init__()
+        self.directory = directory
+
+    def _get_cache_path(self, name):
+        # type: (str) -> str
+        # From cachecontrol.caches.file_cache.FileCache._fn, brought into our
+        # class for backwards-compatibility and to avoid using a non-public
+        # method.
+        hashed = FileCache.encode(name)
+        parts = list(hashed[:5]) + [hashed]
+        return os.path.join(self.directory, *parts)
+
+    def get(self, key):
+        # type: (str) -> Optional[bytes]
+        path = self._get_cache_path(key)
+        with suppressed_cache_errors():
+            with open(path, 'rb') as f:
+                return f.read()
+
+    def set(self, key, value):
+        # type: (str, bytes) -> None
+        path = self._get_cache_path(key)
+        with suppressed_cache_errors():
+            ensure_dir(os.path.dirname(path))
+
+            with adjacent_tmp_file(path) as f:
+                f.write(value)
+
+            replace(f.name, path)
+
+    def delete(self, key):
+        # type: (str) -> None
+        path = self._get_cache_path(key)
+        with suppressed_cache_errors():
+            os.remove(path)

venv/Lib/site-packages/pip/_internal/network/download.py

@@ -0,0 +1,182 @@
+"""Download files with progress indicators.
+"""
+import cgi
+import logging
+import mimetypes
+import os
+
+from pip._vendor.requests.models import CONTENT_CHUNK_SIZE
+
+from pip._internal.cli.progress_bars import DownloadProgressProvider
+from pip._internal.exceptions import NetworkConnectionError
+from pip._internal.models.index import PyPI
+from pip._internal.network.cache import is_from_cache
+from pip._internal.network.utils import (
+    HEADERS,
+    raise_for_status,
+    response_chunks,
+)
+from pip._internal.utils.misc import (
+    format_size,
+    redact_auth_from_url,
+    splitext,
+)
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+
+if MYPY_CHECK_RUNNING:
+    from typing import Iterable, Optional
+
+    from pip._vendor.requests.models import Response
+
+    from pip._internal.models.link import Link
+    from pip._internal.network.session import PipSession
+
+logger = logging.getLogger(__name__)
+
+
+def _get_http_response_size(resp):
+    # type: (Response) -> Optional[int]
+    try:
+        return int(resp.headers['content-length'])
+    except (ValueError, KeyError, TypeError):
+        return None
+
+
+def _prepare_download(
+    resp,  # type: Response
+    link,  # type: Link
+    progress_bar  # type: str
+):
+    # type: (...) -> Iterable[bytes]
+    total_length = _get_http_response_size(resp)
+
+    if link.netloc == PyPI.file_storage_domain:
+        url = link.show_url
+    else:
+        url = link.url_without_fragment
+
+    logged_url = redact_auth_from_url(url)
+
+    if total_length:
+        logged_url = '{} ({})'.format(logged_url, format_size(total_length))
+
+    if is_from_cache(resp):
+        logger.info("Using cached %s", logged_url)
+    else:
+        logger.info("Downloading %s", logged_url)
+
+    if logger.getEffectiveLevel() > logging.INFO:
+        show_progress = False
+    elif is_from_cache(resp):
+        show_progress = False
+    elif not total_length:
+        show_progress = True
+    elif total_length > (40 * 1000):
+        show_progress = True
+    else:
+        show_progress = False
+
+    chunks = response_chunks(resp, CONTENT_CHUNK_SIZE)
+
+    if not show_progress:
+        return chunks
+
+    return DownloadProgressProvider(
+        progress_bar, max=total_length
+    )(chunks)
+
+
+def sanitize_content_filename(filename):
+    # type: (str) -> str
+    """
+    Sanitize the "filename" value from a Content-Disposition header.
+    """
+    return os.path.basename(filename)
+
+
+def parse_content_disposition(content_disposition, default_filename):
+    # type: (str, str) -> str
+    """
+    Parse the "filename" value from a Content-Disposition header, and
+    return the default filename if the result is empty.
+    """
+    _type, params = cgi.parse_header(content_disposition)
+    filename = params.get('filename')
+    if filename:
+        # We need to sanitize the filename to prevent directory traversal
+        # in case the filename contains ".." path parts.
+        filename = sanitize_content_filename(filename)
+    return filename or default_filename
+
+
+def _get_http_response_filename(resp, link):
+    # type: (Response, Link) -> str
+    """Get an ideal filename from the given HTTP response, falling back to
+    the link filename if not provided.
+    """
+    filename = link.filename  # fallback
+    # Have a look at the Content-Disposition header for a better guess
+    content_disposition = resp.headers.get('content-disposition')
+    if content_disposition:
+        filename = parse_content_disposition(content_disposition, filename)
+    ext = splitext(filename)[1]  # type: Optional[str]
+    if not ext:
+        ext = mimetypes.guess_extension(
+            resp.headers.get('content-type', '')
+        )
+        if ext:
+            filename += ext
+    if not ext and link.url != resp.url:
+        ext = os.path.splitext(resp.url)[1]
+        if ext:
+            filename += ext
+    return filename
+
+
+def _http_get_download(session, link):
+    # type: (PipSession, Link) -> Response
+    target_url = link.url.split('#', 1)[0]
+    resp = session.get(target_url, headers=HEADERS, stream=True)
+    raise_for_status(resp)
+    return resp
+
+
+class Download(object):
+    def __init__(
+        self,
+        response,  # type: Response
+        filename,  # type: str
+        chunks,  # type: Iterable[bytes]
+    ):
+        # type: (...) -> None
+        self.response = response
+        self.filename = filename
+        self.chunks = chunks
+
+
+class Downloader(object):
+    def __init__(
+        self,
+        session,  # type: PipSession
+        progress_bar,  # type: str
+    ):
+        # type: (...) -> None
+        self._session = session
+        self._progress_bar = progress_bar
+
+    def __call__(self, link):
+        # type: (Link) -> Download
+        try:
+            resp = _http_get_download(self._session, link)
+        except NetworkConnectionError as e:
+            assert e.response is not None
+            logger.critical(
+                "HTTP error %s while getting %s", e.response.status_code, link
+            )
+            raise
+
+        return Download(
+            resp,
+            _get_http_response_filename(resp, link),
+            _prepare_download(resp, link, self._progress_bar),
+        )

venv/Lib/site-packages/pip/_internal/network/lazy_wheel.py

@@ -0,0 +1,235 @@
+"""Lazy ZIP over HTTP"""
+
+__all__ = ['HTTPRangeRequestUnsupported', 'dist_from_wheel_url']
+
+from bisect import bisect_left, bisect_right
+from contextlib import contextmanager
+from tempfile import NamedTemporaryFile
+from zipfile import BadZipfile, ZipFile
+
+from pip._vendor.requests.models import CONTENT_CHUNK_SIZE
+from pip._vendor.six.moves import range
+
+from pip._internal.network.utils import (
+    HEADERS,
+    raise_for_status,
+    response_chunks,
+)
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+from pip._internal.utils.wheel import pkg_resources_distribution_for_wheel
+
+if MYPY_CHECK_RUNNING:
+    from typing import Any, Dict, Iterator, List, Optional, Tuple
+
+    from pip._vendor.pkg_resources import Distribution
+    from pip._vendor.requests.models import Response
+
+    from pip._internal.network.session import PipSession
+
+
+class HTTPRangeRequestUnsupported(Exception):
+    pass
+
+
+def dist_from_wheel_url(name, url, session):
+    # type: (str, str, PipSession) -> Distribution
+    """Return a pkg_resources.Distribution from the given wheel URL.
+
+    This uses HTTP range requests to only fetch the potion of the wheel
+    containing metadata, just enough for the object to be constructed.
+    If such requests are not supported, HTTPRangeRequestUnsupported
+    is raised.
+    """
+    with LazyZipOverHTTP(url, session) as wheel:
+        # For read-only ZIP files, ZipFile only needs methods read,
+        # seek, seekable and tell, not the whole IO protocol.
+        zip_file = ZipFile(wheel)  # type: ignore
+        # After context manager exit, wheel.name
+        # is an invalid file by intention.
+        return pkg_resources_distribution_for_wheel(zip_file, name, wheel.name)
+
+
+class LazyZipOverHTTP(object):
+    """File-like object mapped to a ZIP file over HTTP.
+
+    This uses HTTP range requests to lazily fetch the file's content,
+    which is supposed to be fed to ZipFile.  If such requests are not
+    supported by the server, raise HTTPRangeRequestUnsupported
+    during initialization.
+    """
+
+    def __init__(self, url, session, chunk_size=CONTENT_CHUNK_SIZE):
+        # type: (str, PipSession, int) -> None
+        head = session.head(url, headers=HEADERS)
+        raise_for_status(head)
+        assert head.status_code == 200
+        self._session, self._url, self._chunk_size = session, url, chunk_size
+        self._length = int(head.headers['Content-Length'])
+        self._file = NamedTemporaryFile()
+        self.truncate(self._length)
+        self._left = []  # type: List[int]
+        self._right = []  # type: List[int]
+        if 'bytes' not in head.headers.get('Accept-Ranges', 'none'):
+            raise HTTPRangeRequestUnsupported('range request is not supported')
+        self._check_zip()
+
+    @property
+    def mode(self):
+        # type: () -> str
+        """Opening mode, which is always rb."""
+        return 'rb'
+
+    @property
+    def name(self):
+        # type: () -> str
+        """Path to the underlying file."""
+        return self._file.name
+
+    def seekable(self):
+        # type: () -> bool
+        """Return whether random access is supported, which is True."""
+        return True
+
+    def close(self):
+        # type: () -> None
+        """Close the file."""
+        self._file.close()
+
+    @property
+    def closed(self):
+        # type: () -> bool
+        """Whether the file is closed."""
+        return self._file.closed
+
+    def read(self, size=-1):
+        # type: (int) -> bytes
+        """Read up to size bytes from the object and return them.
+
+        As a convenience, if size is unspecified or -1,
+        all bytes until EOF are returned.  Fewer than
+        size bytes may be returned if EOF is reached.
+        """
+        download_size = max(size, self._chunk_size)
+        start, length = self.tell(), self._length
+        stop = length if size < 0 else min(start+download_size, length)
+        start = max(0, stop-download_size)
+        self._download(start, stop-1)
+        return self._file.read(size)
+
+    def readable(self):
+        # type: () -> bool
+        """Return whether the file is readable, which is True."""
+        return True
+
+    def seek(self, offset, whence=0):
+        # type: (int, int) -> int
+        """Change stream position and return the new absolute position.
+
+        Seek to offset relative position indicated by whence:
+        * 0: Start of stream (the default).  pos should be >= 0;
+        * 1: Current position - pos may be negative;
+        * 2: End of stream - pos usually negative.
+        """
+        return self._file.seek(offset, whence)
+
+    def tell(self):
+        # type: () -> int
+        """Return the current possition."""
+        return self._file.tell()
+
+    def truncate(self, size=None):
+        # type: (Optional[int]) -> int
+        """Resize the stream to the given size in bytes.
+
+        If size is unspecified resize to the current position.
+        The current stream position isn't changed.
+
+        Return the new file size.
+        """
+        return self._file.truncate(size)
+
+    def writable(self):
+        # type: () -> bool
+        """Return False."""
+        return False
+
+    def __enter__(self):
+        # type: () -> LazyZipOverHTTP
+        self._file.__enter__()
+        return self
+
+    def __exit__(self, *exc):
+        # type: (*Any) -> Optional[bool]
+        return self._file.__exit__(*exc)
+
+    @contextmanager
+    def _stay(self):
+        # type: ()-> Iterator[None]
+        """Return a context manager keeping the position.
+
+        At the end of the block, seek back to original position.
+        """
+        pos = self.tell()
+        try:
+            yield
+        finally:
+            self.seek(pos)
+
+    def _check_zip(self):
+        # type: () -> None
+        """Check and download until the file is a valid ZIP."""
+        end = self._length - 1
+        for start in reversed(range(0, end, self._chunk_size)):
+            self._download(start, end)
+            with self._stay():
+                try:
+                    # For read-only ZIP files, ZipFile only needs
+                    # methods read, seek, seekable and tell.
+                    ZipFile(self)  # type: ignore
+                except BadZipfile:
+                    pass
+                else:
+                    break
+
+    def _stream_response(self, start, end, base_headers=HEADERS):
+        # type: (int, int, Dict[str, str]) -> Response
+        """Return HTTP response to a range request from start to end."""
+        headers = base_headers.copy()
+        headers['Range'] = 'bytes={}-{}'.format(start, end)
+        # TODO: Get range requests to be correctly cached
+        headers['Cache-Control'] = 'no-cache'
+        return self._session.get(self._url, headers=headers, stream=True)
+
+    def _merge(self, start, end, left, right):
+        # type: (int, int, int, int) -> Iterator[Tuple[int, int]]
+        """Return an iterator of intervals to be fetched.
+
+        Args:
+            start (int): Start of needed interval
+            end (int): End of needed interval
+            left (int): Index of first overlapping downloaded data
+            right (int): Index after last overlapping downloaded data
+        """
+        lslice, rslice = self._left[left:right], self._right[left:right]
+        i = start = min([start]+lslice[:1])
+        end = max([end]+rslice[-1:])
+        for j, k in zip(lslice, rslice):
+            if j > i:
+                yield i, j-1
+            i = k + 1
+        if i <= end:
+            yield i, end
+        self._left[left:right], self._right[left:right] = [start], [end]
+
+    def _download(self, start, end):
+        # type: (int, int) -> None
+        """Download bytes from start to end inclusively."""
+        with self._stay():
+            left = bisect_left(self._right, start)
+            right = bisect_right(self._left, end)
+            for start, end in self._merge(start, end, left, right):
+                response = self._stream_response(start, end)
+                response.raise_for_status()
+                self.seek(start)
+                for chunk in response_chunks(response, self._chunk_size):
+                    self._file.write(chunk)

venv/Lib/site-packages/pip/_internal/network/session.py

@@ -0,0 +1,421 @@
+"""PipSession and supporting code, containing all pip-specific
+network request configuration and behavior.
+"""
+
+# The following comment should be removed at some point in the future.
+# mypy: disallow-untyped-defs=False
+
+import email.utils
+import json
+import logging
+import mimetypes
+import os
+import platform
+import sys
+import warnings
+
+from pip._vendor import requests, six, urllib3
+from pip._vendor.cachecontrol import CacheControlAdapter
+from pip._vendor.requests.adapters import BaseAdapter, HTTPAdapter
+from pip._vendor.requests.models import Response
+from pip._vendor.requests.structures import CaseInsensitiveDict
+from pip._vendor.six.moves.urllib import parse as urllib_parse
+from pip._vendor.urllib3.exceptions import InsecureRequestWarning
+
+from pip import __version__
+from pip._internal.network.auth import MultiDomainBasicAuth
+from pip._internal.network.cache import SafeFileCache
+# Import ssl from compat so the initial import occurs in only one place.
+from pip._internal.utils.compat import has_tls, ipaddress
+from pip._internal.utils.glibc import libc_ver
+from pip._internal.utils.misc import (
+    build_url_from_netloc,
+    get_installed_version,
+    parse_netloc,
+)
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+from pip._internal.utils.urls import url_to_path
+
+if MYPY_CHECK_RUNNING:
+    from typing import (
+        Iterator, List, Optional, Tuple, Union,
+    )
+
+    from pip._internal.models.link import Link
+
+    SecureOrigin = Tuple[str, str, Optional[Union[int, str]]]
+
+
+logger = logging.getLogger(__name__)
+
+
+# Ignore warning raised when using --trusted-host.
+warnings.filterwarnings("ignore", category=InsecureRequestWarning)
+
+
+SECURE_ORIGINS = [
+    # protocol, hostname, port
+    # Taken from Chrome's list of secure origins (See: http://bit.ly/1qrySKC)
+    ("https", "*", "*"),
+    ("*", "localhost", "*"),
+    ("*", "127.0.0.0/8", "*"),
+    ("*", "::1/128", "*"),
+    ("file", "*", None),
+    # ssh is always secure.
+    ("ssh", "*", "*"),
+]  # type: List[SecureOrigin]
+
+
+# These are environment variables present when running under various
+# CI systems.  For each variable, some CI systems that use the variable
+# are indicated.  The collection was chosen so that for each of a number
+# of popular systems, at least one of the environment variables is used.
+# This list is used to provide some indication of and lower bound for
+# CI traffic to PyPI.  Thus, it is okay if the list is not comprehensive.
+# For more background, see: https://github.com/pypa/pip/issues/5499
+CI_ENVIRONMENT_VARIABLES = (
+    # Azure Pipelines
+    'BUILD_BUILDID',
+    # Jenkins
+    'BUILD_ID',
+    # AppVeyor, CircleCI, Codeship, Gitlab CI, Shippable, Travis CI
+    'CI',
+    # Explicit environment variable.
+    'PIP_IS_CI',
+)
+
+
+def looks_like_ci():
+    # type: () -> bool
+    """
+    Return whether it looks like pip is running under CI.
+    """
+    # We don't use the method of checking for a tty (e.g. using isatty())
+    # because some CI systems mimic a tty (e.g. Travis CI).  Thus that
+    # method doesn't provide definitive information in either direction.
+    return any(name in os.environ for name in CI_ENVIRONMENT_VARIABLES)
+
+
+def user_agent():
+    """
+    Return a string representing the user agent.
+    """
+    data = {
+        "installer": {"name": "pip", "version": __version__},
+        "python": platform.python_version(),
+        "implementation": {
+            "name": platform.python_implementation(),
+        },
+    }
+
+    if data["implementation"]["name"] == 'CPython':
+        data["implementation"]["version"] = platform.python_version()
+    elif data["implementation"]["name"] == 'PyPy':
+        if sys.pypy_version_info.releaselevel == 'final':
+            pypy_version_info = sys.pypy_version_info[:3]
+        else:
+            pypy_version_info = sys.pypy_version_info
+        data["implementation"]["version"] = ".".join(
+            [str(x) for x in pypy_version_info]
+        )
+    elif data["implementation"]["name"] == 'Jython':
+        # Complete Guess
+        data["implementation"]["version"] = platform.python_version()
+    elif data["implementation"]["name"] == 'IronPython':
+        # Complete Guess
+        data["implementation"]["version"] = platform.python_version()
+
+    if sys.platform.startswith("linux"):
+        from pip._vendor import distro
+        distro_infos = dict(filter(
+            lambda x: x[1],
+            zip(["name", "version", "id"], distro.linux_distribution()),
+        ))
+        libc = dict(filter(
+            lambda x: x[1],
+            zip(["lib", "version"], libc_ver()),
+        ))
+        if libc:
+            distro_infos["libc"] = libc
+        if distro_infos:
+            data["distro"] = distro_infos
+
+    if sys.platform.startswith("darwin") and platform.mac_ver()[0]:
+        data["distro"] = {"name": "macOS", "version": platform.mac_ver()[0]}
+
+    if platform.system():
+        data.setdefault("system", {})["name"] = platform.system()
+
+    if platform.release():
+        data.setdefault("system", {})["release"] = platform.release()
+
+    if platform.machine():
+        data["cpu"] = platform.machine()
+
+    if has_tls():
+        import _ssl as ssl
+        data["openssl_version"] = ssl.OPENSSL_VERSION
+
+    setuptools_version = get_installed_version("setuptools")
+    if setuptools_version is not None:
+        data["setuptools_version"] = setuptools_version
+
+    # Use None rather than False so as not to give the impression that
+    # pip knows it is not being run under CI.  Rather, it is a null or
+    # inconclusive result.  Also, we include some value rather than no
+    # value to make it easier to know that the check has been run.
+    data["ci"] = True if looks_like_ci() else None
+
+    user_data = os.environ.get("PIP_USER_AGENT_USER_DATA")
+    if user_data is not None:
+        data["user_data"] = user_data
+
+    return "{data[installer][name]}/{data[installer][version]} {json}".format(
+        data=data,
+        json=json.dumps(data, separators=(",", ":"), sort_keys=True),
+    )
+
+
+class LocalFSAdapter(BaseAdapter):
+
+    def send(self, request, stream=None, timeout=None, verify=None, cert=None,
+             proxies=None):
+        pathname = url_to_path(request.url)
+
+        resp = Response()
+        resp.status_code = 200
+        resp.url = request.url
+
+        try:
+            stats = os.stat(pathname)
+        except OSError as exc:
+            resp.status_code = 404
+            resp.raw = exc
+        else:
+            modified = email.utils.formatdate(stats.st_mtime, usegmt=True)
+            content_type = mimetypes.guess_type(pathname)[0] or "text/plain"
+            resp.headers = CaseInsensitiveDict({
+                "Content-Type": content_type,
+                "Content-Length": stats.st_size,
+                "Last-Modified": modified,
+            })
+
+            resp.raw = open(pathname, "rb")
+            resp.close = resp.raw.close
+
+        return resp
+
+    def close(self):
+        pass
+
+
+class InsecureHTTPAdapter(HTTPAdapter):
+
+    def cert_verify(self, conn, url, verify, cert):
+        super(InsecureHTTPAdapter, self).cert_verify(
+            conn=conn, url=url, verify=False, cert=cert
+        )
+
+
+class InsecureCacheControlAdapter(CacheControlAdapter):
+
+    def cert_verify(self, conn, url, verify, cert):
+        super(InsecureCacheControlAdapter, self).cert_verify(
+            conn=conn, url=url, verify=False, cert=cert
+        )
+
+
+class PipSession(requests.Session):
+
+    timeout = None  # type: Optional[int]
+
+    def __init__(self, *args, **kwargs):
+        """
+        :param trusted_hosts: Domains not to emit warnings for when not using
+            HTTPS.
+        """
+        retries = kwargs.pop("retries", 0)
+        cache = kwargs.pop("cache", None)
+        trusted_hosts = kwargs.pop("trusted_hosts", [])  # type: List[str]
+        index_urls = kwargs.pop("index_urls", None)
+
+        super(PipSession, self).__init__(*args, **kwargs)
+
+        # Namespace the attribute with "pip_" just in case to prevent
+        # possible conflicts with the base class.
+        self.pip_trusted_origins = []  # type: List[Tuple[str, Optional[int]]]
+
+        # Attach our User Agent to the request
+        self.headers["User-Agent"] = user_agent()
+
+        # Attach our Authentication handler to the session
+        self.auth = MultiDomainBasicAuth(index_urls=index_urls)
+
+        # Create our urllib3.Retry instance which will allow us to customize
+        # how we handle retries.
+        retries = urllib3.Retry(
+            # Set the total number of retries that a particular request can
+            # have.
+            total=retries,
+
+            # A 503 error from PyPI typically means that the Fastly -> Origin
+            # connection got interrupted in some way. A 503 error in general
+            # is typically considered a transient error so we'll go ahead and
+            # retry it.
+            # A 500 may indicate transient error in Amazon S3
+            # A 520 or 527 - may indicate transient error in CloudFlare
+            status_forcelist=[500, 503, 520, 527],
+
+            # Add a small amount of back off between failed requests in
+            # order to prevent hammering the service.
+            backoff_factor=0.25,
+        )
+
+        # Our Insecure HTTPAdapter disables HTTPS validation. It does not
+        # support caching so we'll use it for all http:// URLs.
+        # If caching is disabled, we will also use it for
+        # https:// hosts that we've marked as ignoring
+        # TLS errors for (trusted-hosts).
+        insecure_adapter = InsecureHTTPAdapter(max_retries=retries)
+
+        # We want to _only_ cache responses on securely fetched origins or when
+        # the host is specified as trusted. We do this because
+        # we can't validate the response of an insecurely/untrusted fetched
+        # origin, and we don't want someone to be able to poison the cache and
+        # require manual eviction from the cache to fix it.
+        if cache:
+            secure_adapter = CacheControlAdapter(
+                cache=SafeFileCache(cache),
+                max_retries=retries,
+            )
+            self._trusted_host_adapter = InsecureCacheControlAdapter(
+                cache=SafeFileCache(cache),
+                max_retries=retries,
+            )
+        else:
+            secure_adapter = HTTPAdapter(max_retries=retries)
+            self._trusted_host_adapter = insecure_adapter
+
+        self.mount("https://", secure_adapter)
+        self.mount("http://", insecure_adapter)
+
+        # Enable file:// urls
+        self.mount("file://", LocalFSAdapter())
+
+        for host in trusted_hosts:
+            self.add_trusted_host(host, suppress_logging=True)
+
+    def add_trusted_host(self, host, source=None, suppress_logging=False):
+        # type: (str, Optional[str], bool) -> None
+        """
+        :param host: It is okay to provide a host that has previously been
+            added.
+        :param source: An optional source string, for logging where the host
+            string came from.
+        """
+        if not suppress_logging:
+            msg = 'adding trusted host: {!r}'.format(host)
+            if source is not None:
+                msg += ' (from {})'.format(source)
+            logger.info(msg)
+
+        host_port = parse_netloc(host)
+        if host_port not in self.pip_trusted_origins:
+            self.pip_trusted_origins.append(host_port)
+
+        self.mount(
+            build_url_from_netloc(host) + '/',
+            self._trusted_host_adapter
+        )
+        if not host_port[1]:
+            # Mount wildcard ports for the same host.
+            self.mount(
+                build_url_from_netloc(host) + ':',
+                self._trusted_host_adapter
+            )
+
+    def iter_secure_origins(self):
+        # type: () -> Iterator[SecureOrigin]
+        for secure_origin in SECURE_ORIGINS:
+            yield secure_origin
+        for host, port in self.pip_trusted_origins:
+            yield ('*', host, '*' if port is None else port)
+
+    def is_secure_origin(self, location):
+        # type: (Link) -> bool
+        # Determine if this url used a secure transport mechanism
+        parsed = urllib_parse.urlparse(str(location))
+        origin_protocol, origin_host, origin_port = (
+            parsed.scheme, parsed.hostname, parsed.port,
+        )
+
+        # The protocol to use to see if the protocol matches.
+        # Don't count the repository type as part of the protocol: in
+        # cases such as "git+ssh", only use "ssh". (I.e., Only verify against
+        # the last scheme.)
+        origin_protocol = origin_protocol.rsplit('+', 1)[-1]
+
+        # Determine if our origin is a secure origin by looking through our
+        # hardcoded list of secure origins, as well as any additional ones
+        # configured on this PackageFinder instance.
+        for secure_origin in self.iter_secure_origins():
+            secure_protocol, secure_host, secure_port = secure_origin
+            if origin_protocol != secure_protocol and secure_protocol != "*":
+                continue
+
+            try:
+                addr = ipaddress.ip_address(
+                    None
+                    if origin_host is None
+                    else six.ensure_text(origin_host)
+                )
+                network = ipaddress.ip_network(
+                    six.ensure_text(secure_host)
+                )
+            except ValueError:
+                # We don't have both a valid address or a valid network, so
+                # we'll check this origin against hostnames.
+                if (
+                    origin_host and
+                    origin_host.lower() != secure_host.lower() and
+                    secure_host != "*"
+                ):
+                    continue
+            else:
+                # We have a valid address and network, so see if the address
+                # is contained within the network.
+                if addr not in network:
+                    continue
+
+            # Check to see if the port matches.
+            if (
+                origin_port != secure_port and
+                secure_port != "*" and
+                secure_port is not None
+            ):
+                continue
+
+            # If we've gotten here, then this origin matches the current
+            # secure origin and we should return True
+            return True
+
+        # If we've gotten to this point, then the origin isn't secure and we
+        # will not accept it as a valid location to search. We will however
+        # log a warning that we are ignoring it.
+        logger.warning(
+            "The repository located at %s is not a trusted or secure host and "
+            "is being ignored. If this repository is available via HTTPS we "
+            "recommend you use HTTPS instead, otherwise you may silence "
+            "this warning and allow it anyway with '--trusted-host %s'.",
+            origin_host,
+            origin_host,
+        )
+
+        return False
+
+    def request(self, method, url, *args, **kwargs):
+        # Allow setting a default timeout on a session
+        kwargs.setdefault("timeout", self.timeout)
+
+        # Dispatch the actual request
+        return super(PipSession, self).request(method, url, *args, **kwargs)

venv/Lib/site-packages/pip/_internal/network/utils.py

@@ -0,0 +1,97 @@
+from pip._vendor.requests.models import CONTENT_CHUNK_SIZE, Response
+
+from pip._internal.exceptions import NetworkConnectionError
+from pip._internal.utils.typing import MYPY_CHECK_RUNNING
+
+if MYPY_CHECK_RUNNING:
+    from typing import Dict, Iterator
+
+# The following comments and HTTP headers were originally added by
+# Donald Stufft in git commit 22c562429a61bb77172039e480873fb239dd8c03.
+#
+# We use Accept-Encoding: identity here because requests defaults to
+# accepting compressed responses. This breaks in a variety of ways
+# depending on how the server is configured.
+# - Some servers will notice that the file isn't a compressible file
+#   and will leave the file alone and with an empty Content-Encoding
+# - Some servers will notice that the file is already compressed and
+#   will leave the file alone, adding a Content-Encoding: gzip header
+# - Some servers won't notice anything at all and will take a file
+#   that's already been compressed and compress it again, and set
+#   the Content-Encoding: gzip header
+# By setting this to request only the identity encoding we're hoping
+# to eliminate the third case.  Hopefully there does not exist a server
+# which when given a file will notice it is already compressed and that
+# you're not asking for a compressed file and will then decompress it
+# before sending because if that's the case I don't think it'll ever be
+# possible to make this work.
+HEADERS = {'Accept-Encoding': 'identity'}  # type: Dict[str, str]
+
+
+def raise_for_status(resp):
+    # type: (Response) -> None
+    http_error_msg = u''
+    if isinstance(resp.reason, bytes):
+        # We attempt to decode utf-8 first because some servers
+        # choose to localize their reason strings. If the string
+        # isn't utf-8, we fall back to iso-8859-1 for all other
+        # encodings.
+        try:
+            reason = resp.reason.decode('utf-8')
+        except UnicodeDecodeError:
+            reason = resp.reason.decode('iso-8859-1')
+    else:
+        reason = resp.reason
+
+    if 400 <= resp.status_code < 500:
+        http_error_msg = u'%s Client Error: %s for url: %s' % (
+            resp.status_code, reason, resp.url)
+
+    elif 500 <= resp.status_code < 600:
+        http_error_msg = u'%s Server Error: %s for url: %s' % (
+            resp.status_code, reason, resp.url)
+
+    if http_error_msg:
+        raise NetworkConnectionError(http_error_msg, response=resp)
+
+
+def response_chunks(response, chunk_size=CONTENT_CHUNK_SIZE):
+    # type: (Response, int) -> Iterator[bytes]
+    """Given a requests Response, provide the data chunks.
+    """
+    try:
+        # Special case for urllib3.
+        for chunk in response.raw.stream(
+            chunk_size,
+            # We use decode_content=False here because we don't
+            # want urllib3 to mess with the raw bytes we get
+            # from the server. If we decompress inside of
+            # urllib3 then we cannot verify the checksum
+            # because the checksum will be of the compressed
+            # file. This breakage will only occur if the
+            # server adds a Content-Encoding header, which
+            # depends on how the server was configured:
+            # - Some servers will notice that the file isn't a
+            #   compressible file and will leave the file alone
+            #   and with an empty Content-Encoding
+            # - Some servers will notice that the file is
+            #   already compressed and will leave the file
+            #   alone and will add a Content-Encoding: gzip
+            #   header
+            # - Some servers won't notice anything at all and
+            #   will take a file that's already been compressed
+            #   and compress it again and set the
+            #   Content-Encoding: gzip header
+            #
+            # By setting this not to decode automatically we
+            # hope to eliminate problems with the second case.
+            decode_content=False,
+        ):
+            yield chunk
+    except AttributeError:
+        # Standard file-like object.
+        while True:
+            chunk = response.raw.read(chunk_size)
+            if not chunk:
+                break
+            yield chunk