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Kuznetsov Anton 2022-08-26 16:41:18 +06:00
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# See here for image contents: https://github.com/microsoft/vscode-dev-containers/tree/v0.238.0/containers/python-3/.devcontainer/base.Dockerfile
# [Choice] Python version (use -bullseye variants on local arm64/Apple Silicon): 3, 3.10, 3.9, 3.8, 3.7, 3.6, 3-bullseye, 3.10-bullseye, 3.9-bullseye, 3.8-bullseye, 3.7-bullseye, 3.6-bullseye, 3-buster, 3.10-buster, 3.9-buster, 3.8-buster, 3.7-buster, 3.6-buster
ARG VARIANT="3.10-bullseye"
FROM mcr.microsoft.com/vscode/devcontainers/python:0-${VARIANT}
# [Choice] Node.js version: none, lts/*, 16, 14, 12, 10
ARG NODE_VERSION="none"
RUN if [ "${NODE_VERSION}" != "none" ]; then su vscode -c "umask 0002 && . /usr/local/share/nvm/nvm.sh && nvm install ${NODE_VERSION} 2>&1"; fi
# [Optional] If your pip requirements rarely change, uncomment this section to add them to the image.
# COPY requirements.txt /tmp/pip-tmp/
# RUN pip3 --disable-pip-version-check --no-cache-dir install -r /tmp/pip-tmp/requirements.txt \
# && rm -rf /tmp/pip-tmp
# [Optional] Uncomment this section to install additional OS packages.
# RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
# && apt-get -y install --no-install-recommends <your-package-list-here>
# [Optional] Uncomment this line to install global node packages.
# RUN su vscode -c "source /usr/local/share/nvm/nvm.sh && npm install -g <your-package-here>" 2>&1

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// For format details, see https://aka.ms/devcontainer.json. For config options, see the README at:
// https://github.com/microsoft/vscode-dev-containers/tree/v0.238.0/containers/python-3
{
"name": "Python 3",
"build": {
"dockerfile": "Dockerfile",
"context": "..",
"args": {
// Update 'VARIANT' to pick a Python version: 3, 3.10, 3.9, 3.8, 3.7, 3.6
// Append -bullseye or -buster to pin to an OS version.
// Use -bullseye variants on local on arm64/Apple Silicon.
"VARIANT": "3.10-bullseye",
// Options
"NODE_VERSION": "none"
}
},
// Configure tool-specific properties.
"customizations": {
// Configure properties specific to VS Code.
"vscode": {
// Set *default* container specific settings.json values on container create.
"settings": {
"python.defaultInterpreterPath": "/usr/local/bin/python",
"python.linting.enabled": true,
"python.linting.pylintEnabled": true,
"python.formatting.autopep8Path": "/usr/local/py-utils/bin/autopep8",
"python.formatting.blackPath": "/usr/local/py-utils/bin/black",
"python.formatting.yapfPath": "/usr/local/py-utils/bin/yapf",
"python.linting.banditPath": "/usr/local/py-utils/bin/bandit",
"python.linting.flake8Path": "/usr/local/py-utils/bin/flake8",
"python.linting.mypyPath": "/usr/local/py-utils/bin/mypy",
"python.linting.pycodestylePath": "/usr/local/py-utils/bin/pycodestyle",
"python.linting.pydocstylePath": "/usr/local/py-utils/bin/pydocstyle",
"python.linting.pylintPath": "/usr/local/py-utils/bin/pylint"
},
// Add the IDs of extensions you want installed when the container is created.
"extensions": [
"ms-python.python",
"ms-python.vscode-pylance"
]
}
},
// Use 'forwardPorts' to make a list of ports inside the container available locally.
// "forwardPorts": [],
// Use 'postCreateCommand' to run commands after the container is created.
// "postCreateCommand": "pip3 install --user -r requirements.txt",
// Comment out to connect as root instead. More info: https://aka.ms/vscode-remote/containers/non-root.
"remoteUser": "vscode",
"features": {
"git": "os-provided"
}
}

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**/.env
.env.dev*
.env.prod*

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{
"workbench.colorTheme": "ReUI"
}

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# pull official base image
FROM python:3.9.6-alpine
# set work directory
WORKDIR /usr/src/app
# set environment variables
ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1
# install psycopg2 dependencies
RUN apk update && apk add postgresql-dev gcc python3-dev musl-dev
# install dependencies
RUN pip install --upgrade pip
COPY ./requirements.txt .
RUN pip install -r requirements.txt
# copy entrypoint.sh
COPY ./entrypoint.sh .
RUN sed -i 's/\r$//g' /usr/src/app/entrypoint.sh
RUN chmod +x /usr/src/app/entrypoint.sh
# copy project
COPY . .
# run entrypoint.sh
ENTRYPOINT ["/usr/src/app/entrypoint.sh"]

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###########
# BUILDER #
###########
# pull official base image
FROM python:3.9.6-alpine as builder
# set work directory
WORKDIR /usr/src/app
# set environment variables
ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1
# install psycopg2 dependencies
RUN apk update && apk add postgresql-dev gcc python3-dev musl-dev
# lint
# RUN pip install --upgrade pip
# RUN pip install flake8==3.9.2
COPY . .
# RUN flake8 --ignore=E501,F401 .
# install dependencies
COPY ./requirements.txt .
RUN pip wheel --no-cache-dir --no-deps --wheel-dir /usr/src/app/wheels -r requirements.txt
#########
# FINAL #
#########
# pull official base image
FROM python:3.9.6-alpine
# create directory for the app user
RUN mkdir -p /home/app
# create the app user
RUN addgroup -S app && adduser -S app -G app
# create the appropriate directories
ENV HOME=/home/app
RUN mkdir -p $HOME/staticfiles
RUN mkdir -p $HOME/mediafiles
WORKDIR $HOME
# install dependencies
RUN apk update && apk add libpq
COPY --from=builder /usr/src/app/wheels /wheels
COPY --from=builder /usr/src/app/requirements.txt .
RUN pip install --no-cache /wheels/*
# copy entrypoint.prod.sh
COPY ./entrypoint.prod.sh .
RUN sed -i 's/\r$//g' $HOME/entrypoint.prod.sh
RUN chmod +x $HOME/entrypoint.prod.sh
# copy project
COPY . $HOME
# chown all the files to the app user
RUN chown -R app:app $HOME
# change to the app user
USER app
# run entrypoint.prod.sh
ENTRYPOINT ["/home/app/entrypoint.prod.sh"]

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# init db with flush
docker-compose exec web python manage.py flush --no-input && \
docker-compose exec web python manage.py migrate && \
docker-compose exec web python manage.py createsuperuser
# make migrations for app
# python manage.py makemigrations polls
#init in production
docker-compose -f ./docker-compose.prod.yaml exec web python manage.py flush --no-input && \
docker-compose -f ./docker-compose.prod.yaml exec web python manage.py migrate && \
docker-compose -f ./docker-compose.prod.yaml exec web python manage.py createsuperuser
# collect static files
python manage.py collectstatic --no-input --clear
# start production
docker-compose -f ./docker-compose.prod.yaml up --build

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version: '3.3'
services:
web:
build:
context: .
dockerfile: Dockerfile.prod
command: gunicorn example.wsgi:application --bind 0.0.0.0:8000
volumes:
- static_volume:/home/app/staticfiles
- media_volume:/home/app/mediafiles
expose:
- 8000
env_file:
- ./.env.prod
depends_on:
- db
db:
image: postgres:14.5-alpine
volumes:
- postgres_data_prod:/var/lib/postgresql/data/
env_file:
- ./.env.prod.db
nginx:
build: ./nginx
volumes:
- static_volume:/home/app/staticfiles
ports:
- 1337:80
depends_on:
- web
volumes:
postgres_data_prod:
static_volume:
media_volume:

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version: '3.3'
services:
web:
build:
context: .
dockerfile: Dockerfile
command: python manage.py runserver 0.0.0.0:8000
volumes:
- ./:/usr/src/app/
ports:
- 8000:8000
env_file:
- ./.env.dev
depends_on:
- db_dev
db_dev:
image: postgres:14.5-alpine
volumes:
- postgres_data_dev:/var/lib/postgresql/data/
environment:
- POSTGRES_USER=django
- POSTGRES_PASSWORD=pwddjango
- POSTGRES_DB=django_dev
volumes:
postgres_data_dev:

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#!/bin/sh
if [ "$DATABASE" = "postgres" ]
then
echo "Waiting for postgres..."
while ! nc -z $SQL_HOST $SQL_PORT; do
sleep 0.1
done
echo "PostgreSQL started in production mode"
EXPORT IS_PRODUCTION=1
fi
exec "$@"

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#!/bin/sh
if [ "$DATABASE" = "postgres" ]
then
echo "Waiting for postgres..."
while ! nc -z $SQL_HOST $SQL_PORT; do
sleep 0.1
done
echo "PostgreSQL started"
EXPORT IS_PRODUCTION=0
fi
# python manage.py flush --no-input
# python manage.py migrate
exec "$@"

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<#
.Synopsis
Activate a Python virtual environment for the current PowerShell session.
.Description
Pushes the python executable for a virtual environment to the front of the
$Env:PATH environment variable and sets the prompt to signify that you are
in a Python virtual environment. Makes use of the command line switches as
well as the `pyvenv.cfg` file values present in the virtual environment.
.Parameter VenvDir
Path to the directory that contains the virtual environment to activate. The
default value for this is the parent of the directory that the Activate.ps1
script is located within.
.Parameter Prompt
The prompt prefix to display when this virtual environment is activated. By
default, this prompt is the name of the virtual environment folder (VenvDir)
surrounded by parentheses and followed by a single space (ie. '(.venv) ').
.Example
Activate.ps1
Activates the Python virtual environment that contains the Activate.ps1 script.
.Example
Activate.ps1 -Verbose
Activates the Python virtual environment that contains the Activate.ps1 script,
and shows extra information about the activation as it executes.
.Example
Activate.ps1 -VenvDir C:\Users\MyUser\Common\.venv
Activates the Python virtual environment located in the specified location.
.Example
Activate.ps1 -Prompt "MyPython"
Activates the Python virtual environment that contains the Activate.ps1 script,
and prefixes the current prompt with the specified string (surrounded in
parentheses) while the virtual environment is active.
.Notes
On Windows, it may be required to enable this Activate.ps1 script by setting the
execution policy for the user. You can do this by issuing the following PowerShell
command:
PS C:\> Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
For more information on Execution Policies:
https://go.microsoft.com/fwlink/?LinkID=135170
#>
Param(
[Parameter(Mandatory = $false)]
[String]
$VenvDir,
[Parameter(Mandatory = $false)]
[String]
$Prompt
)
<# Function declarations --------------------------------------------------- #>
<#
.Synopsis
Remove all shell session elements added by the Activate script, including the
addition of the virtual environment's Python executable from the beginning of
the PATH variable.
.Parameter NonDestructive
If present, do not remove this function from the global namespace for the
session.
#>
function global:deactivate ([switch]$NonDestructive) {
# Revert to original values
# The prior prompt:
if (Test-Path -Path Function:_OLD_VIRTUAL_PROMPT) {
Copy-Item -Path Function:_OLD_VIRTUAL_PROMPT -Destination Function:prompt
Remove-Item -Path Function:_OLD_VIRTUAL_PROMPT
}
# The prior PYTHONHOME:
if (Test-Path -Path Env:_OLD_VIRTUAL_PYTHONHOME) {
Copy-Item -Path Env:_OLD_VIRTUAL_PYTHONHOME -Destination Env:PYTHONHOME
Remove-Item -Path Env:_OLD_VIRTUAL_PYTHONHOME
}
# The prior PATH:
if (Test-Path -Path Env:_OLD_VIRTUAL_PATH) {
Copy-Item -Path Env:_OLD_VIRTUAL_PATH -Destination Env:PATH
Remove-Item -Path Env:_OLD_VIRTUAL_PATH
}
# Just remove the VIRTUAL_ENV altogether:
if (Test-Path -Path Env:VIRTUAL_ENV) {
Remove-Item -Path env:VIRTUAL_ENV
}
# Just remove the _PYTHON_VENV_PROMPT_PREFIX altogether:
if (Get-Variable -Name "_PYTHON_VENV_PROMPT_PREFIX" -ErrorAction SilentlyContinue) {
Remove-Variable -Name _PYTHON_VENV_PROMPT_PREFIX -Scope Global -Force
}
# Leave deactivate function in the global namespace if requested:
if (-not $NonDestructive) {
Remove-Item -Path function:deactivate
}
}
<#
.Description
Get-PyVenvConfig parses the values from the pyvenv.cfg file located in the
given folder, and returns them in a map.
For each line in the pyvenv.cfg file, if that line can be parsed into exactly
two strings separated by `=` (with any amount of whitespace surrounding the =)
then it is considered a `key = value` line. The left hand string is the key,
the right hand is the value.
If the value starts with a `'` or a `"` then the first and last character is
stripped from the value before being captured.
.Parameter ConfigDir
Path to the directory that contains the `pyvenv.cfg` file.
#>
function Get-PyVenvConfig(
[String]
$ConfigDir
) {
Write-Verbose "Given ConfigDir=$ConfigDir, obtain values in pyvenv.cfg"
# Ensure the file exists, and issue a warning if it doesn't (but still allow the function to continue).
$pyvenvConfigPath = Join-Path -Resolve -Path $ConfigDir -ChildPath 'pyvenv.cfg' -ErrorAction Continue
# An empty map will be returned if no config file is found.
$pyvenvConfig = @{ }
if ($pyvenvConfigPath) {
Write-Verbose "File exists, parse `key = value` lines"
$pyvenvConfigContent = Get-Content -Path $pyvenvConfigPath
$pyvenvConfigContent | ForEach-Object {
$keyval = $PSItem -split "\s*=\s*", 2
if ($keyval[0] -and $keyval[1]) {
$val = $keyval[1]
# Remove extraneous quotations around a string value.
if ("'""".Contains($val.Substring(0, 1))) {
$val = $val.Substring(1, $val.Length - 2)
}
$pyvenvConfig[$keyval[0]] = $val
Write-Verbose "Adding Key: '$($keyval[0])'='$val'"
}
}
}
return $pyvenvConfig
}
<# Begin Activate script --------------------------------------------------- #>
# Determine the containing directory of this script
$VenvExecPath = Split-Path -Parent $MyInvocation.MyCommand.Definition
$VenvExecDir = Get-Item -Path $VenvExecPath
Write-Verbose "Activation script is located in path: '$VenvExecPath'"
Write-Verbose "VenvExecDir Fullname: '$($VenvExecDir.FullName)"
Write-Verbose "VenvExecDir Name: '$($VenvExecDir.Name)"
# Set values required in priority: CmdLine, ConfigFile, Default
# First, get the location of the virtual environment, it might not be
# VenvExecDir if specified on the command line.
if ($VenvDir) {
Write-Verbose "VenvDir given as parameter, using '$VenvDir' to determine values"
}
else {
Write-Verbose "VenvDir not given as a parameter, using parent directory name as VenvDir."
$VenvDir = $VenvExecDir.Parent.FullName.TrimEnd("\\/")
Write-Verbose "VenvDir=$VenvDir"
}
# Next, read the `pyvenv.cfg` file to determine any required value such
# as `prompt`.
$pyvenvCfg = Get-PyVenvConfig -ConfigDir $VenvDir
# Next, set the prompt from the command line, or the config file, or
# just use the name of the virtual environment folder.
if ($Prompt) {
Write-Verbose "Prompt specified as argument, using '$Prompt'"
}
else {
Write-Verbose "Prompt not specified as argument to script, checking pyvenv.cfg value"
if ($pyvenvCfg -and $pyvenvCfg['prompt']) {
Write-Verbose " Setting based on value in pyvenv.cfg='$($pyvenvCfg['prompt'])'"
$Prompt = $pyvenvCfg['prompt'];
}
else {
Write-Verbose " Setting prompt based on parent's directory's name. (Is the directory name passed to venv module when creating the virutal environment)"
Write-Verbose " Got leaf-name of $VenvDir='$(Split-Path -Path $venvDir -Leaf)'"
$Prompt = Split-Path -Path $venvDir -Leaf
}
}
Write-Verbose "Prompt = '$Prompt'"
Write-Verbose "VenvDir='$VenvDir'"
# Deactivate any currently active virtual environment, but leave the
# deactivate function in place.
deactivate -nondestructive
# Now set the environment variable VIRTUAL_ENV, used by many tools to determine
# that there is an activated venv.
$env:VIRTUAL_ENV = $VenvDir
if (-not $Env:VIRTUAL_ENV_DISABLE_PROMPT) {
Write-Verbose "Setting prompt to '$Prompt'"
# Set the prompt to include the env name
# Make sure _OLD_VIRTUAL_PROMPT is global
function global:_OLD_VIRTUAL_PROMPT { "" }
Copy-Item -Path function:prompt -Destination function:_OLD_VIRTUAL_PROMPT
New-Variable -Name _PYTHON_VENV_PROMPT_PREFIX -Description "Python virtual environment prompt prefix" -Scope Global -Option ReadOnly -Visibility Public -Value $Prompt
function global:prompt {
Write-Host -NoNewline -ForegroundColor Green "($_PYTHON_VENV_PROMPT_PREFIX) "
_OLD_VIRTUAL_PROMPT
}
}
# Clear PYTHONHOME
if (Test-Path -Path Env:PYTHONHOME) {
Copy-Item -Path Env:PYTHONHOME -Destination Env:_OLD_VIRTUAL_PYTHONHOME
Remove-Item -Path Env:PYTHONHOME
}
# Add the venv to the PATH
Copy-Item -Path Env:PATH -Destination Env:_OLD_VIRTUAL_PATH
$Env:PATH = "$VenvExecDir$([System.IO.Path]::PathSeparator)$Env:PATH"

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# This file must be used with "source bin/activate" *from bash*
# you cannot run it directly
deactivate () {
# reset old environment variables
if [ -n "${_OLD_VIRTUAL_PATH:-}" ] ; then
PATH="${_OLD_VIRTUAL_PATH:-}"
export PATH
unset _OLD_VIRTUAL_PATH
fi
if [ -n "${_OLD_VIRTUAL_PYTHONHOME:-}" ] ; then
PYTHONHOME="${_OLD_VIRTUAL_PYTHONHOME:-}"
export PYTHONHOME
unset _OLD_VIRTUAL_PYTHONHOME
fi
# This should detect bash and zsh, which have a hash command that must
# be called to get it to forget past commands. Without forgetting
# past commands the $PATH changes we made may not be respected
if [ -n "${BASH:-}" -o -n "${ZSH_VERSION:-}" ] ; then
hash -r
fi
if [ -n "${_OLD_VIRTUAL_PS1:-}" ] ; then
PS1="${_OLD_VIRTUAL_PS1:-}"
export PS1
unset _OLD_VIRTUAL_PS1
fi
unset VIRTUAL_ENV
if [ ! "${1:-}" = "nondestructive" ] ; then
# Self destruct!
unset -f deactivate
fi
}
# unset irrelevant variables
deactivate nondestructive
VIRTUAL_ENV="/home/su/Загрузки/django_example/env"
export VIRTUAL_ENV
_OLD_VIRTUAL_PATH="$PATH"
PATH="$VIRTUAL_ENV/bin:$PATH"
export PATH
# unset PYTHONHOME if set
# this will fail if PYTHONHOME is set to the empty string (which is bad anyway)
# could use `if (set -u; : $PYTHONHOME) ;` in bash
if [ -n "${PYTHONHOME:-}" ] ; then
_OLD_VIRTUAL_PYTHONHOME="${PYTHONHOME:-}"
unset PYTHONHOME
fi
if [ -z "${VIRTUAL_ENV_DISABLE_PROMPT:-}" ] ; then
_OLD_VIRTUAL_PS1="${PS1:-}"
if [ "x(env) " != x ] ; then
PS1="(env) ${PS1:-}"
else
if [ "`basename \"$VIRTUAL_ENV\"`" = "__" ] ; then
# special case for Aspen magic directories
# see https://aspen.io/
PS1="[`basename \`dirname \"$VIRTUAL_ENV\"\``] $PS1"
else
PS1="(`basename \"$VIRTUAL_ENV\"`)$PS1"
fi
fi
export PS1
fi
# This should detect bash and zsh, which have a hash command that must
# be called to get it to forget past commands. Without forgetting
# past commands the $PATH changes we made may not be respected
if [ -n "${BASH:-}" -o -n "${ZSH_VERSION:-}" ] ; then
hash -r
fi

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# This file must be used with "source bin/activate.csh" *from csh*.
# You cannot run it directly.
# Created by Davide Di Blasi <davidedb@gmail.com>.
# Ported to Python 3.3 venv by Andrew Svetlov <andrew.svetlov@gmail.com>
alias deactivate 'test $?_OLD_VIRTUAL_PATH != 0 && setenv PATH "$_OLD_VIRTUAL_PATH" && unset _OLD_VIRTUAL_PATH; rehash; test $?_OLD_VIRTUAL_PROMPT != 0 && set prompt="$_OLD_VIRTUAL_PROMPT" && unset _OLD_VIRTUAL_PROMPT; unsetenv VIRTUAL_ENV; test "\!:*" != "nondestructive" && unalias deactivate'
# Unset irrelevant variables.
deactivate nondestructive
setenv VIRTUAL_ENV "/home/su/Загрузки/django_example/env"
set _OLD_VIRTUAL_PATH="$PATH"
setenv PATH "$VIRTUAL_ENV/bin:$PATH"
set _OLD_VIRTUAL_PROMPT="$prompt"
if (! "$?VIRTUAL_ENV_DISABLE_PROMPT") then
if ("env" != "") then
set env_name = "env"
else
if (`basename "VIRTUAL_ENV"` == "__") then
# special case for Aspen magic directories
# see https://aspen.io/
set env_name = `basename \`dirname "$VIRTUAL_ENV"\``
else
set env_name = `basename "$VIRTUAL_ENV"`
endif
endif
set prompt = "[$env_name] $prompt"
unset env_name
endif
alias pydoc python -m pydoc
rehash

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# This file must be used with ". bin/activate.fish" *from fish* (http://fishshell.org)
# you cannot run it directly
function deactivate -d "Exit virtualenv and return to normal shell environment"
# reset old environment variables
if test -n "$_OLD_VIRTUAL_PATH"
set -gx PATH $_OLD_VIRTUAL_PATH
set -e _OLD_VIRTUAL_PATH
end
if test -n "$_OLD_VIRTUAL_PYTHONHOME"
set -gx PYTHONHOME $_OLD_VIRTUAL_PYTHONHOME
set -e _OLD_VIRTUAL_PYTHONHOME
end
if test -n "$_OLD_FISH_PROMPT_OVERRIDE"
functions -e fish_prompt
set -e _OLD_FISH_PROMPT_OVERRIDE
functions -c _old_fish_prompt fish_prompt
functions -e _old_fish_prompt
end
set -e VIRTUAL_ENV
if test "$argv[1]" != "nondestructive"
# Self destruct!
functions -e deactivate
end
end
# unset irrelevant variables
deactivate nondestructive
set -gx VIRTUAL_ENV "/home/su/Загрузки/django_example/env"
set -gx _OLD_VIRTUAL_PATH $PATH
set -gx PATH "$VIRTUAL_ENV/bin" $PATH
# unset PYTHONHOME if set
if set -q PYTHONHOME
set -gx _OLD_VIRTUAL_PYTHONHOME $PYTHONHOME
set -e PYTHONHOME
end
if test -z "$VIRTUAL_ENV_DISABLE_PROMPT"
# fish uses a function instead of an env var to generate the prompt.
# save the current fish_prompt function as the function _old_fish_prompt
functions -c fish_prompt _old_fish_prompt
# with the original prompt function renamed, we can override with our own.
function fish_prompt
# Save the return status of the last command
set -l old_status $status
# Prompt override?
if test -n "(env) "
printf "%s%s" "(env) " (set_color normal)
else
# ...Otherwise, prepend env
set -l _checkbase (basename "$VIRTUAL_ENV")
if test $_checkbase = "__"
# special case for Aspen magic directories
# see https://aspen.io/
printf "%s[%s]%s " (set_color -b blue white) (basename (dirname "$VIRTUAL_ENV")) (set_color normal)
else
printf "%s(%s)%s" (set_color -b blue white) (basename "$VIRTUAL_ENV") (set_color normal)
end
end
# Restore the return status of the previous command.
echo "exit $old_status" | .
_old_fish_prompt
end
set -gx _OLD_FISH_PROMPT_OVERRIDE "$VIRTUAL_ENV"
end

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#!/home/su/Загрузки/django_example/env/bin/python
# -*- coding: utf-8 -*-
import re
import sys
from autopep8 import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(main())

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#!/home/su/Загрузки/django_example/env/bin/python3
# -*- coding: utf-8 -*-
import re
import sys
from django.core.management import execute_from_command_line
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(execute_from_command_line())

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#!/home/su/Загрузки/django_example/env/bin/python3
# -*- coding: utf-8 -*-
import re
import sys
from setuptools.command.easy_install import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(main())

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#!/home/su/Загрузки/django_example/env/bin/python3
# -*- coding: utf-8 -*-
import re
import sys
from setuptools.command.easy_install import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(main())

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#!/home/su/Загрузки/django_example/env/bin/python3
# -*- coding: utf-8 -*-
import re
import sys
from gunicorn.app.wsgiapp import run
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(run())

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#!/home/su/Загрузки/django_example/env/bin/python3
# -*- coding: utf-8 -*-
import re
import sys
from pip._internal.cli.main import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(main())

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#!/home/su/Загрузки/django_example/env/bin/python3
# -*- coding: utf-8 -*-
import re
import sys
from pip._internal.cli.main import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(main())

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#!/home/su/Загрузки/django_example/env/bin/python3
# -*- coding: utf-8 -*-
import re
import sys
from pip._internal.cli.main import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(main())

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#!/home/su/Загрузки/django_example/env/bin/python
# -*- coding: utf-8 -*-
import re
import sys
from pycodestyle import _main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(_main())

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python3

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/usr/bin/python3

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#!/home/su/Загрузки/django_example/env/bin/python3
# -*- coding: utf-8 -*-
import re
import sys
from sqlparse.__main__ import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(main())

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pip

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Copyright (c) Django Software Foundation and individual contributors.
All rights reserved.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. 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.
3. Neither the name of Django 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 OWNER 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.

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Django is licensed under the three-clause BSD license; see the file
LICENSE for details.
Django includes code from the Python standard library, which is licensed under
the Python license, a permissive open source license. The copyright and license
is included below for compliance with Python's terms.
----------------------------------------------------------------------
Copyright (c) 2001-present Python Software Foundation; All Rights Reserved
A. HISTORY OF THE SOFTWARE
==========================
Python was created in the early 1990s by Guido van Rossum at Stichting
Mathematisch Centrum (CWI, see http://www.cwi.nl) in the Netherlands
as a successor of a language called ABC. Guido remains Python's
principal author, although it includes many contributions from others.
In 1995, Guido continued his work on Python at the Corporation for
National Research Initiatives (CNRI, see http://www.cnri.reston.va.us)
in Reston, Virginia where he released several versions of the
software.
In May 2000, Guido and the Python core development team moved to
BeOpen.com to form the BeOpen PythonLabs team. In October of the same
year, the PythonLabs team moved to Digital Creations, which became
Zope Corporation. In 2001, the Python Software Foundation (PSF, see
https://www.python.org/psf/) was formed, a non-profit organization
created specifically to own Python-related Intellectual Property.
Zope Corporation was a sponsoring member of the PSF.
All Python releases are Open Source (see http://www.opensource.org for
the Open Source Definition). Historically, most, but not all, Python
releases have also been GPL-compatible; the table below summarizes
the various releases.
Release Derived Year Owner GPL-
from compatible? (1)
0.9.0 thru 1.2 1991-1995 CWI yes
1.3 thru 1.5.2 1.2 1995-1999 CNRI yes
1.6 1.5.2 2000 CNRI no
2.0 1.6 2000 BeOpen.com no
1.6.1 1.6 2001 CNRI yes (2)
2.1 2.0+1.6.1 2001 PSF no
2.0.1 2.0+1.6.1 2001 PSF yes
2.1.1 2.1+2.0.1 2001 PSF yes
2.1.2 2.1.1 2002 PSF yes
2.1.3 2.1.2 2002 PSF yes
2.2 and above 2.1.1 2001-now PSF yes
Footnotes:
(1) GPL-compatible doesn't mean that we're distributing Python under
the GPL. All Python licenses, unlike the GPL, let you distribute
a modified version without making your changes open source. The
GPL-compatible licenses make it possible to combine Python with
other software that is released under the GPL; the others don't.
(2) According to Richard Stallman, 1.6.1 is not GPL-compatible,
because its license has a choice of law clause. According to
CNRI, however, Stallman's lawyer has told CNRI's lawyer that 1.6.1
is "not incompatible" with the GPL.
Thanks to the many outside volunteers who have worked under Guido's
direction to make these releases possible.
B. TERMS AND CONDITIONS FOR ACCESSING OR OTHERWISE USING PYTHON
===============================================================
Python software and documentation are licensed under the
Python Software Foundation License Version 2.
Starting with Python 3.8.6, examples, recipes, and other code in
the documentation are dual licensed under the PSF License Version 2
and the Zero-Clause BSD license.
Some software incorporated into Python is under different licenses.
The licenses are listed with code falling under that license.
PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2
--------------------------------------------
1. This LICENSE AGREEMENT is between the Python Software Foundation
("PSF"), and the Individual or Organization ("Licensee") accessing and
otherwise using this software ("Python") in source or binary form and
its associated documentation.
2. Subject to the terms and conditions of this License Agreement, PSF hereby
grants Licensee a nonexclusive, royalty-free, world-wide license to reproduce,
analyze, test, perform and/or display publicly, prepare derivative works,
distribute, and otherwise use Python alone or in any derivative version,
provided, however, that PSF's License Agreement and PSF's notice of copyright,
i.e., "Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022 Python Software Foundation;
All Rights Reserved" are retained in Python alone or in any derivative version
prepared by Licensee.
3. In the event Licensee prepares a derivative work that is based on
or incorporates Python or any part thereof, and wants to make
the derivative work available to others as provided herein, then
Licensee hereby agrees to include in any such work a brief summary of
the changes made to Python.
4. PSF is making Python available to Licensee on an "AS IS"
basis. PSF MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, PSF MAKES NO AND
DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON WILL NOT
INFRINGE ANY THIRD PARTY RIGHTS.
5. PSF SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON
FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS
A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON,
OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
6. This License Agreement will automatically terminate upon a material
breach of its terms and conditions.
7. Nothing in this License Agreement shall be deemed to create any
relationship of agency, partnership, or joint venture between PSF and
Licensee. This License Agreement does not grant permission to use PSF
trademarks or trade name in a trademark sense to endorse or promote
products or services of Licensee, or any third party.
8. By copying, installing or otherwise using Python, Licensee
agrees to be bound by the terms and conditions of this License
Agreement.
BEOPEN.COM LICENSE AGREEMENT FOR PYTHON 2.0
-------------------------------------------
BEOPEN PYTHON OPEN SOURCE LICENSE AGREEMENT VERSION 1
1. This LICENSE AGREEMENT is between BeOpen.com ("BeOpen"), having an
office at 160 Saratoga Avenue, Santa Clara, CA 95051, and the
Individual or Organization ("Licensee") accessing and otherwise using
this software in source or binary form and its associated
documentation ("the Software").
2. Subject to the terms and conditions of this BeOpen Python License
Agreement, BeOpen hereby grants Licensee a non-exclusive,
royalty-free, world-wide license to reproduce, analyze, test, perform
and/or display publicly, prepare derivative works, distribute, and
otherwise use the Software alone or in any derivative version,
provided, however, that the BeOpen Python License is retained in the
Software, alone or in any derivative version prepared by Licensee.
3. BeOpen is making the Software available to Licensee on an "AS IS"
basis. BEOPEN MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, BEOPEN MAKES NO AND
DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF THE SOFTWARE WILL NOT
INFRINGE ANY THIRD PARTY RIGHTS.
4. BEOPEN SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF THE
SOFTWARE FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS
AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THE SOFTWARE, OR ANY
DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
5. This License Agreement will automatically terminate upon a material
breach of its terms and conditions.
6. This License Agreement shall be governed by and interpreted in all
respects by the law of the State of California, excluding conflict of
law provisions. Nothing in this License Agreement shall be deemed to
create any relationship of agency, partnership, or joint venture
between BeOpen and Licensee. This License Agreement does not grant
permission to use BeOpen trademarks or trade names in a trademark
sense to endorse or promote products or services of Licensee, or any
third party. As an exception, the "BeOpen Python" logos available at
http://www.pythonlabs.com/logos.html may be used according to the
permissions granted on that web page.
7. By copying, installing or otherwise using the software, Licensee
agrees to be bound by the terms and conditions of this License
Agreement.
CNRI LICENSE AGREEMENT FOR PYTHON 1.6.1
---------------------------------------
1. This LICENSE AGREEMENT is between the Corporation for National
Research Initiatives, having an office at 1895 Preston White Drive,
Reston, VA 20191 ("CNRI"), and the Individual or Organization
("Licensee") accessing and otherwise using Python 1.6.1 software in
source or binary form and its associated documentation.
2. Subject to the terms and conditions of this License Agreement, CNRI
hereby grants Licensee a nonexclusive, royalty-free, world-wide
license to reproduce, analyze, test, perform and/or display publicly,
prepare derivative works, distribute, and otherwise use Python 1.6.1
alone or in any derivative version, provided, however, that CNRI's
License Agreement and CNRI's notice of copyright, i.e., "Copyright (c)
1995-2001 Corporation for National Research Initiatives; All Rights
Reserved" are retained in Python 1.6.1 alone or in any derivative
version prepared by Licensee. Alternately, in lieu of CNRI's License
Agreement, Licensee may substitute the following text (omitting the
quotes): "Python 1.6.1 is made available subject to the terms and
conditions in CNRI's License Agreement. This Agreement together with
Python 1.6.1 may be located on the internet using the following
unique, persistent identifier (known as a handle): 1895.22/1013. This
Agreement may also be obtained from a proxy server on the internet
using the following URL: http://hdl.handle.net/1895.22/1013".
3. In the event Licensee prepares a derivative work that is based on
or incorporates Python 1.6.1 or any part thereof, and wants to make
the derivative work available to others as provided herein, then
Licensee hereby agrees to include in any such work a brief summary of
the changes made to Python 1.6.1.
4. CNRI is making Python 1.6.1 available to Licensee on an "AS IS"
basis. CNRI MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR
IMPLIED. BY WAY OF EXAMPLE, BUT NOT LIMITATION, CNRI MAKES NO AND
DISCLAIMS ANY REPRESENTATION OR WARRANTY OF MERCHANTABILITY OR FITNESS
FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF PYTHON 1.6.1 WILL NOT
INFRINGE ANY THIRD PARTY RIGHTS.
5. CNRI SHALL NOT BE LIABLE TO LICENSEE OR ANY OTHER USERS OF PYTHON
1.6.1 FOR ANY INCIDENTAL, SPECIAL, OR CONSEQUENTIAL DAMAGES OR LOSS AS
A RESULT OF MODIFYING, DISTRIBUTING, OR OTHERWISE USING PYTHON 1.6.1,
OR ANY DERIVATIVE THEREOF, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.
6. This License Agreement will automatically terminate upon a material
breach of its terms and conditions.
7. This License Agreement shall be governed by the federal
intellectual property law of the United States, including without
limitation the federal copyright law, and, to the extent such
U.S. federal law does not apply, by the law of the Commonwealth of
Virginia, excluding Virginia's conflict of law provisions.
Notwithstanding the foregoing, with regard to derivative works based
on Python 1.6.1 that incorporate non-separable material that was
previously distributed under the GNU General Public License (GPL), the
law of the Commonwealth of Virginia shall govern this License
Agreement only as to issues arising under or with respect to
Paragraphs 4, 5, and 7 of this License Agreement. Nothing in this
License Agreement shall be deemed to create any relationship of
agency, partnership, or joint venture between CNRI and Licensee. This
License Agreement does not grant permission to use CNRI trademarks or
trade name in a trademark sense to endorse or promote products or
services of Licensee, or any third party.
8. By clicking on the "ACCEPT" button where indicated, or by copying,
installing or otherwise using Python 1.6.1, Licensee agrees to be
bound by the terms and conditions of this License Agreement.
ACCEPT
CWI LICENSE AGREEMENT FOR PYTHON 0.9.0 THROUGH 1.2
--------------------------------------------------
Copyright (c) 1991 - 1995, Stichting Mathematisch Centrum Amsterdam,
The Netherlands. All rights reserved.
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the name of Stichting Mathematisch
Centrum or CWI not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior
permission.
STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
ZERO-CLAUSE BSD LICENSE FOR CODE IN THE PYTHON DOCUMENTATION
----------------------------------------------------------------------
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.

100
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Metadata-Version: 2.1
Name: Django
Version: 4.1
Summary: A high-level Python web framework that encourages rapid development and clean, pragmatic design.
Home-page: https://www.djangoproject.com/
Author: Django Software Foundation
Author-email: foundation@djangoproject.com
License: BSD-3-Clause
Project-URL: Documentation, https://docs.djangoproject.com/
Project-URL: Release notes, https://docs.djangoproject.com/en/stable/releases/
Project-URL: Funding, https://www.djangoproject.com/fundraising/
Project-URL: Source, https://github.com/django/django
Project-URL: Tracker, https://code.djangoproject.com/
Platform: UNKNOWN
Classifier: Development Status :: 5 - Production/Stable
Classifier: Environment :: Web Environment
Classifier: Framework :: Django
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 :: Only
Classifier: Programming Language :: Python :: 3.8
Classifier: Programming Language :: Python :: 3.9
Classifier: Programming Language :: Python :: 3.10
Classifier: Topic :: Internet :: WWW/HTTP
Classifier: Topic :: Internet :: WWW/HTTP :: Dynamic Content
Classifier: Topic :: Internet :: WWW/HTTP :: WSGI
Classifier: Topic :: Software Development :: Libraries :: Application Frameworks
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Requires-Python: >=3.8
License-File: LICENSE
License-File: LICENSE.python
License-File: AUTHORS
Requires-Dist: asgiref (<4,>=3.5.2)
Requires-Dist: sqlparse (>=0.2.2)
Requires-Dist: backports.zoneinfo ; python_version < "3.9"
Requires-Dist: tzdata ; sys_platform == "win32"
Provides-Extra: argon2
Requires-Dist: argon2-cffi (>=19.1.0) ; extra == 'argon2'
Provides-Extra: bcrypt
Requires-Dist: bcrypt ; extra == 'bcrypt'
======
Django
======
Django is a high-level Python web framework that encourages rapid development
and clean, pragmatic design. Thanks for checking it out.
All documentation is in the "``docs``" directory and online at
https://docs.djangoproject.com/en/stable/. If you're just getting started,
here's how we recommend you read the docs:
* First, read ``docs/intro/install.txt`` for instructions on installing Django.
* Next, work through the tutorials in order (``docs/intro/tutorial01.txt``,
``docs/intro/tutorial02.txt``, etc.).
* If you want to set up an actual deployment server, read
``docs/howto/deployment/index.txt`` for instructions.
* You'll probably want to read through the topical guides (in ``docs/topics``)
next; from there you can jump to the HOWTOs (in ``docs/howto``) for specific
problems, and check out the reference (``docs/ref``) for gory details.
* See ``docs/README`` for instructions on building an HTML version of the docs.
Docs are updated rigorously. If you find any problems in the docs, or think
they should be clarified in any way, please take 30 seconds to fill out a
ticket here: https://code.djangoproject.com/newticket
To get more help:
* Join the ``#django`` channel on ``irc.libera.chat``. Lots of helpful people
hang out there. See https://web.libera.chat if you're new to IRC.
* Join the django-users mailing list, or read the archives, at
https://groups.google.com/group/django-users.
To contribute to Django:
* Check out https://docs.djangoproject.com/en/dev/internals/contributing/ for
information about getting involved.
To run Django's test suite:
* Follow the instructions in the "Unit tests" section of
``docs/internals/contributing/writing-code/unit-tests.txt``, published online at
https://docs.djangoproject.com/en/dev/internals/contributing/writing-code/unit-tests/#running-the-unit-tests
Supporting the Development of Django
====================================
Django's development depends on your contributions.
If you depend on Django, remember to support the Django Software Foundation: https://www.djangoproject.com/fundraising/

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Wheel-Version: 1.0
Generator: bdist_wheel (0.37.0)
Root-Is-Purelib: true
Tag: py3-none-any

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[console_scripts]
django-admin = django.core.management:execute_from_command_line

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django

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pip

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Copyright (c) Django Software Foundation and individual contributors.
All rights reserved.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. 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.
3. Neither the name of Django 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 OWNER 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.

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Metadata-Version: 2.1
Name: asgiref
Version: 3.5.2
Summary: ASGI specs, helper code, and adapters
Home-page: https://github.com/django/asgiref/
Author: Django Software Foundation
Author-email: foundation@djangoproject.com
License: BSD
Project-URL: Documentation, https://asgi.readthedocs.io/
Project-URL: Further Documentation, https://docs.djangoproject.com/en/stable/topics/async/#async-adapter-functions
Project-URL: Changelog, https://github.com/django/asgiref/blob/master/CHANGELOG.txt
Classifier: Development Status :: 5 - Production/Stable
Classifier: Environment :: Web Environment
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 :: Only
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: 3.8
Classifier: Programming Language :: Python :: 3.9
Classifier: Programming Language :: Python :: 3.10
Classifier: Topic :: Internet :: WWW/HTTP
Requires-Python: >=3.7
License-File: LICENSE
Requires-Dist: typing-extensions ; python_version < "3.8"
Provides-Extra: tests
Requires-Dist: pytest ; extra == 'tests'
Requires-Dist: pytest-asyncio ; extra == 'tests'
Requires-Dist: mypy (>=0.800) ; extra == 'tests'
asgiref
=======
.. image:: https://api.travis-ci.org/django/asgiref.svg
:target: https://travis-ci.org/django/asgiref
.. image:: https://img.shields.io/pypi/v/asgiref.svg
:target: https://pypi.python.org/pypi/asgiref
ASGI is a standard for Python asynchronous web apps and servers to communicate
with each other, and positioned as an asynchronous successor to WSGI. You can
read more at https://asgi.readthedocs.io/en/latest/
This package includes ASGI base libraries, such as:
* Sync-to-async and async-to-sync function wrappers, ``asgiref.sync``
* Server base classes, ``asgiref.server``
* A WSGI-to-ASGI adapter, in ``asgiref.wsgi``
Function wrappers
-----------------
These allow you to wrap or decorate async or sync functions to call them from
the other style (so you can call async functions from a synchronous thread,
or vice-versa).
In particular:
* AsyncToSync lets a synchronous subthread stop and wait while the async
function is called on the main thread's event loop, and then control is
returned to the thread when the async function is finished.
* SyncToAsync lets async code call a synchronous function, which is run in
a threadpool and control returned to the async coroutine when the synchronous
function completes.
The idea is to make it easier to call synchronous APIs from async code and
asynchronous APIs from synchronous code so it's easier to transition code from
one style to the other. In the case of Channels, we wrap the (synchronous)
Django view system with SyncToAsync to allow it to run inside the (asynchronous)
ASGI server.
Note that exactly what threads things run in is very specific, and aimed to
keep maximum compatibility with old synchronous code. See
"Synchronous code & Threads" below for a full explanation. By default,
``sync_to_async`` will run all synchronous code in the program in the same
thread for safety reasons; you can disable this for more performance with
``@sync_to_async(thread_sensitive=False)``, but make sure that your code does
not rely on anything bound to threads (like database connections) when you do.
Threadlocal replacement
-----------------------
This is a drop-in replacement for ``threading.local`` that works with both
threads and asyncio Tasks. Even better, it will proxy values through from a
task-local context to a thread-local context when you use ``sync_to_async``
to run things in a threadpool, and vice-versa for ``async_to_sync``.
If you instead want true thread- and task-safety, you can set
``thread_critical`` on the Local object to ensure this instead.
Server base classes
-------------------
Includes a ``StatelessServer`` class which provides all the hard work of
writing a stateless server (as in, does not handle direct incoming sockets
but instead consumes external streams or sockets to work out what is happening).
An example of such a server would be a chatbot server that connects out to
a central chat server and provides a "connection scope" per user chatting to
it. There's only one actual connection, but the server has to separate things
into several scopes for easier writing of the code.
You can see an example of this being used in `frequensgi <https://github.com/andrewgodwin/frequensgi>`_.
WSGI-to-ASGI adapter
--------------------
Allows you to wrap a WSGI application so it appears as a valid ASGI application.
Simply wrap it around your WSGI application like so::
asgi_application = WsgiToAsgi(wsgi_application)
The WSGI application will be run in a synchronous threadpool, and the wrapped
ASGI application will be one that accepts ``http`` class messages.
Please note that not all extended features of WSGI may be supported (such as
file handles for incoming POST bodies).
Dependencies
------------
``asgiref`` requires Python 3.7 or higher.
Contributing
------------
Please refer to the
`main Channels contributing docs <https://github.com/django/channels/blob/master/CONTRIBUTING.rst>`_.
Testing
'''''''
To run tests, make sure you have installed the ``tests`` extra with the package::
cd asgiref/
pip install -e .[tests]
pytest
Building the documentation
''''''''''''''''''''''''''
The documentation uses `Sphinx <http://www.sphinx-doc.org>`_::
cd asgiref/docs/
pip install sphinx
To build the docs, you can use the default tools::
sphinx-build -b html . _build/html # or `make html`, if you've got make set up
cd _build/html
python -m http.server
...or you can use ``sphinx-autobuild`` to run a server and rebuild/reload
your documentation changes automatically::
pip install sphinx-autobuild
sphinx-autobuild . _build/html
Releasing
'''''''''
To release, first add details to CHANGELOG.txt and update the version number in ``asgiref/__init__.py``.
Then, build and push the packages::
python -m build
twine upload dist/*
rm -r build/ dist/
Implementation Details
----------------------
Synchronous code & threads
''''''''''''''''''''''''''
The ``asgiref.sync`` module provides two wrappers that let you go between
asynchronous and synchronous code at will, while taking care of the rough edges
for you.
Unfortunately, the rough edges are numerous, and the code has to work especially
hard to keep things in the same thread as much as possible. Notably, the
restrictions we are working with are:
* All synchronous code called through ``SyncToAsync`` and marked with
``thread_sensitive`` should run in the same thread as each other (and if the
outer layer of the program is synchronous, the main thread)
* If a thread already has a running async loop, ``AsyncToSync`` can't run things
on that loop if it's blocked on synchronous code that is above you in the
call stack.
The first compromise you get to might be that ``thread_sensitive`` code should
just run in the same thread and not spawn in a sub-thread, fulfilling the first
restriction, but that immediately runs you into the second restriction.
The only real solution is to essentially have a variant of ThreadPoolExecutor
that executes any ``thread_sensitive`` code on the outermost synchronous
thread - either the main thread, or a single spawned subthread.
This means you now have two basic states:
* If the outermost layer of your program is synchronous, then all async code
run through ``AsyncToSync`` will run in a per-call event loop in arbitrary
sub-threads, while all ``thread_sensitive`` code will run in the main thread.
* If the outermost layer of your program is asynchronous, then all async code
runs on the main thread's event loop, and all ``thread_sensitive`` synchronous
code will run in a single shared sub-thread.
Crucially, this means that in both cases there is a thread which is a shared
resource that all ``thread_sensitive`` code must run on, and there is a chance
that this thread is currently blocked on its own ``AsyncToSync`` call. Thus,
``AsyncToSync`` needs to act as an executor for thread code while it's blocking.
The ``CurrentThreadExecutor`` class provides this functionality; rather than
simply waiting on a Future, you can call its ``run_until_future`` method and
it will run submitted code until that Future is done. This means that code
inside the call can then run code on your thread.
Maintenance and Security
------------------------
To report security issues, please contact security@djangoproject.com. For GPG
signatures and more security process information, see
https://docs.djangoproject.com/en/dev/internals/security/.
To report bugs or request new features, please open a new GitHub issue.
This repository is part of the Channels project. For the shepherd and maintenance team, please see the
`main Channels readme <https://github.com/django/channels/blob/master/README.rst>`_.

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Wheel-Version: 1.0
Generator: bdist_wheel (0.37.1)
Root-Is-Purelib: true
Tag: py3-none-any

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asgiref

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__version__ = "3.5.2"

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import asyncio
import inspect
def is_double_callable(application):
"""
Tests to see if an application is a legacy-style (double-callable) application.
"""
# Look for a hint on the object first
if getattr(application, "_asgi_single_callable", False):
return False
if getattr(application, "_asgi_double_callable", False):
return True
# Uninstanted classes are double-callable
if inspect.isclass(application):
return True
# Instanted classes depend on their __call__
if hasattr(application, "__call__"):
# We only check to see if its __call__ is a coroutine function -
# if it's not, it still might be a coroutine function itself.
if asyncio.iscoroutinefunction(application.__call__):
return False
# Non-classes we just check directly
return not asyncio.iscoroutinefunction(application)
def double_to_single_callable(application):
"""
Transforms a double-callable ASGI application into a single-callable one.
"""
async def new_application(scope, receive, send):
instance = application(scope)
return await instance(receive, send)
return new_application
def guarantee_single_callable(application):
"""
Takes either a single- or double-callable application and always returns it
in single-callable style. Use this to add backwards compatibility for ASGI
2.0 applications to your server/test harness/etc.
"""
if is_double_callable(application):
application = double_to_single_callable(application)
return application

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import queue
import threading
from concurrent.futures import Executor, Future
class _WorkItem:
"""
Represents an item needing to be run in the executor.
Copied from ThreadPoolExecutor (but it's private, so we're not going to rely on importing it)
"""
def __init__(self, future, fn, args, kwargs):
self.future = future
self.fn = fn
self.args = args
self.kwargs = kwargs
def run(self):
if not self.future.set_running_or_notify_cancel():
return
try:
result = self.fn(*self.args, **self.kwargs)
except BaseException as exc:
self.future.set_exception(exc)
# Break a reference cycle with the exception 'exc'
self = None
else:
self.future.set_result(result)
class CurrentThreadExecutor(Executor):
"""
An Executor that actually runs code in the thread it is instantiated in.
Passed to other threads running async code, so they can run sync code in
the thread they came from.
"""
def __init__(self):
self._work_thread = threading.current_thread()
self._work_queue = queue.Queue()
self._broken = False
def run_until_future(self, future):
"""
Runs the code in the work queue until a result is available from the future.
Should be run from the thread the executor is initialised in.
"""
# Check we're in the right thread
if threading.current_thread() != self._work_thread:
raise RuntimeError(
"You cannot run CurrentThreadExecutor from a different thread"
)
future.add_done_callback(self._work_queue.put)
# Keep getting and running work items until we get the future we're waiting for
# back via the future's done callback.
try:
while True:
# Get a work item and run it
work_item = self._work_queue.get()
if work_item is future:
return
work_item.run()
del work_item
finally:
self._broken = True
def submit(self, fn, *args, **kwargs):
# Check they're not submitting from the same thread
if threading.current_thread() == self._work_thread:
raise RuntimeError(
"You cannot submit onto CurrentThreadExecutor from its own thread"
)
# Check they're not too late or the executor errored
if self._broken:
raise RuntimeError("CurrentThreadExecutor already quit or is broken")
# Add to work queue
f = Future()
work_item = _WorkItem(f, fn, args, kwargs)
self._work_queue.put(work_item)
# Return the future
return f

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import random
import string
import sys
import threading
import weakref
class Local:
"""
A drop-in replacement for threading.locals that also works with asyncio
Tasks (via the current_task asyncio method), and passes locals through
sync_to_async and async_to_sync.
Specifically:
- Locals work per-coroutine on any thread not spawned using asgiref
- Locals work per-thread on any thread not spawned using asgiref
- Locals are shared with the parent coroutine when using sync_to_async
- Locals are shared with the parent thread when using async_to_sync
(and if that thread was launched using sync_to_async, with its parent
coroutine as well, with this working for indefinite levels of nesting)
Set thread_critical to True to not allow locals to pass from an async Task
to a thread it spawns. This is needed for code that truly needs
thread-safety, as opposed to things used for helpful context (e.g. sqlite
does not like being called from a different thread to the one it is from).
Thread-critical code will still be differentiated per-Task within a thread
as it is expected it does not like concurrent access.
This doesn't use contextvars as it needs to support 3.6. Once it can support
3.7 only, we can then reimplement the storage more nicely.
"""
def __init__(self, thread_critical: bool = False) -> None:
self._thread_critical = thread_critical
self._thread_lock = threading.RLock()
self._context_refs: "weakref.WeakSet[object]" = weakref.WeakSet()
# Random suffixes stop accidental reuse between different Locals,
# though we try to force deletion as well.
self._attr_name = "_asgiref_local_impl_{}_{}".format(
id(self),
"".join(random.choice(string.ascii_letters) for i in range(8)),
)
def _get_context_id(self):
"""
Get the ID we should use for looking up variables
"""
# Prevent a circular reference
from .sync import AsyncToSync, SyncToAsync
# First, pull the current task if we can
context_id = SyncToAsync.get_current_task()
context_is_async = True
# OK, let's try for a thread ID
if context_id is None:
context_id = threading.current_thread()
context_is_async = False
# If we're thread-critical, we stop here, as we can't share contexts.
if self._thread_critical:
return context_id
# Now, take those and see if we can resolve them through the launch maps
for i in range(sys.getrecursionlimit()):
try:
if context_is_async:
# Tasks have a source thread in AsyncToSync
context_id = AsyncToSync.launch_map[context_id]
context_is_async = False
else:
# Threads have a source task in SyncToAsync
context_id = SyncToAsync.launch_map[context_id]
context_is_async = True
except KeyError:
break
else:
# Catch infinite loops (they happen if you are screwing around
# with AsyncToSync implementations)
raise RuntimeError("Infinite launch_map loops")
return context_id
def _get_storage(self):
context_obj = self._get_context_id()
if not hasattr(context_obj, self._attr_name):
setattr(context_obj, self._attr_name, {})
self._context_refs.add(context_obj)
return getattr(context_obj, self._attr_name)
def __del__(self):
try:
for context_obj in self._context_refs:
try:
delattr(context_obj, self._attr_name)
except AttributeError:
pass
except TypeError:
# WeakSet.__iter__ can crash when interpreter is shutting down due
# to _IterationGuard being None.
pass
def __getattr__(self, key):
with self._thread_lock:
storage = self._get_storage()
if key in storage:
return storage[key]
else:
raise AttributeError(f"{self!r} object has no attribute {key!r}")
def __setattr__(self, key, value):
if key in ("_context_refs", "_thread_critical", "_thread_lock", "_attr_name"):
return super().__setattr__(key, value)
with self._thread_lock:
storage = self._get_storage()
storage[key] = value
def __delattr__(self, key):
with self._thread_lock:
storage = self._get_storage()
if key in storage:
del storage[key]
else:
raise AttributeError(f"{self!r} object has no attribute {key!r}")

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import asyncio
import logging
import time
import traceback
from .compatibility import guarantee_single_callable
logger = logging.getLogger(__name__)
class StatelessServer:
"""
Base server class that handles basic concepts like application instance
creation/pooling, exception handling, and similar, for stateless protocols
(i.e. ones without actual incoming connections to the process)
Your code should override the handle() method, doing whatever it needs to,
and calling get_or_create_application_instance with a unique `scope_id`
and `scope` for the scope it wants to get.
If an application instance is found with the same `scope_id`, you are
given its input queue, otherwise one is made for you with the scope provided
and you are given that fresh new input queue. Either way, you should do
something like:
input_queue = self.get_or_create_application_instance(
"user-123456",
{"type": "testprotocol", "user_id": "123456", "username": "andrew"},
)
input_queue.put_nowait(message)
If you try and create an application instance and there are already
`max_application` instances, the oldest/least recently used one will be
reclaimed and shut down to make space.
Application coroutines that error will be found periodically (every 100ms
by default) and have their exceptions printed to the console. Override
application_exception() if you want to do more when this happens.
If you override run(), make sure you handle things like launching the
application checker.
"""
application_checker_interval = 0.1
def __init__(self, application, max_applications=1000):
# Parameters
self.application = application
self.max_applications = max_applications
# Initialisation
self.application_instances = {}
### Mainloop and handling
def run(self):
"""
Runs the asyncio event loop with our handler loop.
"""
event_loop = asyncio.get_event_loop()
asyncio.ensure_future(self.application_checker())
try:
event_loop.run_until_complete(self.handle())
except KeyboardInterrupt:
logger.info("Exiting due to Ctrl-C/interrupt")
async def handle(self):
raise NotImplementedError("You must implement handle()")
async def application_send(self, scope, message):
"""
Receives outbound sends from applications and handles them.
"""
raise NotImplementedError("You must implement application_send()")
### Application instance management
def get_or_create_application_instance(self, scope_id, scope):
"""
Creates an application instance and returns its queue.
"""
if scope_id in self.application_instances:
self.application_instances[scope_id]["last_used"] = time.time()
return self.application_instances[scope_id]["input_queue"]
# See if we need to delete an old one
while len(self.application_instances) > self.max_applications:
self.delete_oldest_application_instance()
# Make an instance of the application
input_queue = asyncio.Queue()
application_instance = guarantee_single_callable(self.application)
# Run it, and stash the future for later checking
future = asyncio.ensure_future(
application_instance(
scope=scope,
receive=input_queue.get,
send=lambda message: self.application_send(scope, message),
),
)
self.application_instances[scope_id] = {
"input_queue": input_queue,
"future": future,
"scope": scope,
"last_used": time.time(),
}
return input_queue
def delete_oldest_application_instance(self):
"""
Finds and deletes the oldest application instance
"""
oldest_time = min(
details["last_used"] for details in self.application_instances.values()
)
for scope_id, details in self.application_instances.items():
if details["last_used"] == oldest_time:
self.delete_application_instance(scope_id)
# Return to make sure we only delete one in case two have
# the same oldest time
return
def delete_application_instance(self, scope_id):
"""
Removes an application instance (makes sure its task is stopped,
then removes it from the current set)
"""
details = self.application_instances[scope_id]
del self.application_instances[scope_id]
if not details["future"].done():
details["future"].cancel()
async def application_checker(self):
"""
Goes through the set of current application instance Futures and cleans up
any that are done/prints exceptions for any that errored.
"""
while True:
await asyncio.sleep(self.application_checker_interval)
for scope_id, details in list(self.application_instances.items()):
if details["future"].done():
exception = details["future"].exception()
if exception:
await self.application_exception(exception, details)
try:
del self.application_instances[scope_id]
except KeyError:
# Exception handling might have already got here before us. That's fine.
pass
async def application_exception(self, exception, application_details):
"""
Called whenever an application coroutine has an exception.
"""
logging.error(
"Exception inside application: %s\n%s%s",
exception,
"".join(traceback.format_tb(exception.__traceback__)),
f" {exception}",
)

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import asyncio
import asyncio.coroutines
import contextvars
import functools
import inspect
import os
import sys
import threading
import warnings
import weakref
from concurrent.futures import Future, ThreadPoolExecutor
from typing import Any, Callable, Dict, Optional, overload
from .current_thread_executor import CurrentThreadExecutor
from .local import Local
def _restore_context(context):
# Check for changes in contextvars, and set them to the current
# context for downstream consumers
for cvar in context:
try:
if cvar.get() != context.get(cvar):
cvar.set(context.get(cvar))
except LookupError:
cvar.set(context.get(cvar))
def _iscoroutinefunction_or_partial(func: Any) -> bool:
# Python < 3.8 does not correctly determine partially wrapped
# coroutine functions are coroutine functions, hence the need for
# this to exist. Code taken from CPython.
if sys.version_info >= (3, 8):
return asyncio.iscoroutinefunction(func)
else:
while inspect.ismethod(func):
func = func.__func__
while isinstance(func, functools.partial):
func = func.func
return asyncio.iscoroutinefunction(func)
class ThreadSensitiveContext:
"""Async context manager to manage context for thread sensitive mode
This context manager controls which thread pool executor is used when in
thread sensitive mode. By default, a single thread pool executor is shared
within a process.
In Python 3.7+, the ThreadSensitiveContext() context manager may be used to
specify a thread pool per context.
This context manager is re-entrant, so only the outer-most call to
ThreadSensitiveContext will set the context.
Usage:
>>> import time
>>> async with ThreadSensitiveContext():
... await sync_to_async(time.sleep, 1)()
"""
def __init__(self):
self.token = None
async def __aenter__(self):
try:
SyncToAsync.thread_sensitive_context.get()
except LookupError:
self.token = SyncToAsync.thread_sensitive_context.set(self)
return self
async def __aexit__(self, exc, value, tb):
if not self.token:
return
executor = SyncToAsync.context_to_thread_executor.pop(self, None)
if executor:
executor.shutdown()
SyncToAsync.thread_sensitive_context.reset(self.token)
class AsyncToSync:
"""
Utility class which turns an awaitable that only works on the thread with
the event loop into a synchronous callable that works in a subthread.
If the call stack contains an async loop, the code runs there.
Otherwise, the code runs in a new loop in a new thread.
Either way, this thread then pauses and waits to run any thread_sensitive
code called from further down the call stack using SyncToAsync, before
finally exiting once the async task returns.
"""
# Maps launched Tasks to the threads that launched them (for locals impl)
launch_map: "Dict[asyncio.Task[object], threading.Thread]" = {}
# Keeps track of which CurrentThreadExecutor to use. This uses an asgiref
# Local, not a threadlocal, so that tasks can work out what their parent used.
executors = Local()
# When we can't find a CurrentThreadExecutor from the context, such as
# inside create_task, we'll look it up here from the running event loop.
loop_thread_executors: "Dict[asyncio.AbstractEventLoop, CurrentThreadExecutor]" = {}
def __init__(self, awaitable, force_new_loop=False):
if not callable(awaitable) or (
not _iscoroutinefunction_or_partial(awaitable)
and not _iscoroutinefunction_or_partial(
getattr(awaitable, "__call__", awaitable)
)
):
# Python does not have very reliable detection of async functions
# (lots of false negatives) so this is just a warning.
warnings.warn(
"async_to_sync was passed a non-async-marked callable", stacklevel=2
)
self.awaitable = awaitable
try:
self.__self__ = self.awaitable.__self__
except AttributeError:
pass
if force_new_loop:
# They have asked that we always run in a new sub-loop.
self.main_event_loop = None
else:
try:
self.main_event_loop = asyncio.get_running_loop()
except RuntimeError:
# There's no event loop in this thread. Look for the threadlocal if
# we're inside SyncToAsync
main_event_loop_pid = getattr(
SyncToAsync.threadlocal, "main_event_loop_pid", None
)
# We make sure the parent loop is from the same process - if
# they've forked, this is not going to be valid any more (#194)
if main_event_loop_pid and main_event_loop_pid == os.getpid():
self.main_event_loop = getattr(
SyncToAsync.threadlocal, "main_event_loop", None
)
else:
self.main_event_loop = None
def __call__(self, *args, **kwargs):
# You can't call AsyncToSync from a thread with a running event loop
try:
event_loop = asyncio.get_running_loop()
except RuntimeError:
pass
else:
if event_loop.is_running():
raise RuntimeError(
"You cannot use AsyncToSync in the same thread as an async event loop - "
"just await the async function directly."
)
# Wrapping context in list so it can be reassigned from within
# `main_wrap`.
context = [contextvars.copy_context()]
# Make a future for the return information
call_result = Future()
# Get the source thread
source_thread = threading.current_thread()
# Make a CurrentThreadExecutor we'll use to idle in this thread - we
# need one for every sync frame, even if there's one above us in the
# same thread.
if hasattr(self.executors, "current"):
old_current_executor = self.executors.current
else:
old_current_executor = None
current_executor = CurrentThreadExecutor()
self.executors.current = current_executor
loop = None
# Use call_soon_threadsafe to schedule a synchronous callback on the
# main event loop's thread if it's there, otherwise make a new loop
# in this thread.
try:
awaitable = self.main_wrap(
args, kwargs, call_result, source_thread, sys.exc_info(), context
)
if not (self.main_event_loop and self.main_event_loop.is_running()):
# Make our own event loop - in a new thread - and run inside that.
loop = asyncio.new_event_loop()
self.loop_thread_executors[loop] = current_executor
loop_executor = ThreadPoolExecutor(max_workers=1)
loop_future = loop_executor.submit(
self._run_event_loop, loop, awaitable
)
if current_executor:
# Run the CurrentThreadExecutor until the future is done
current_executor.run_until_future(loop_future)
# Wait for future and/or allow for exception propagation
loop_future.result()
else:
# Call it inside the existing loop
self.main_event_loop.call_soon_threadsafe(
self.main_event_loop.create_task, awaitable
)
if current_executor:
# Run the CurrentThreadExecutor until the future is done
current_executor.run_until_future(call_result)
finally:
# Clean up any executor we were running
if loop is not None:
del self.loop_thread_executors[loop]
if hasattr(self.executors, "current"):
del self.executors.current
if old_current_executor:
self.executors.current = old_current_executor
_restore_context(context[0])
# Wait for results from the future.
return call_result.result()
def _run_event_loop(self, loop, coro):
"""
Runs the given event loop (designed to be called in a thread).
"""
asyncio.set_event_loop(loop)
try:
loop.run_until_complete(coro)
finally:
try:
# mimic asyncio.run() behavior
# cancel unexhausted async generators
tasks = asyncio.all_tasks(loop)
for task in tasks:
task.cancel()
async def gather():
await asyncio.gather(*tasks, return_exceptions=True)
loop.run_until_complete(gather())
for task in tasks:
if task.cancelled():
continue
if task.exception() is not None:
loop.call_exception_handler(
{
"message": "unhandled exception during loop shutdown",
"exception": task.exception(),
"task": task,
}
)
if hasattr(loop, "shutdown_asyncgens"):
loop.run_until_complete(loop.shutdown_asyncgens())
finally:
loop.close()
asyncio.set_event_loop(self.main_event_loop)
def __get__(self, parent, objtype):
"""
Include self for methods
"""
func = functools.partial(self.__call__, parent)
return functools.update_wrapper(func, self.awaitable)
async def main_wrap(
self, args, kwargs, call_result, source_thread, exc_info, context
):
"""
Wraps the awaitable with something that puts the result into the
result/exception future.
"""
if context is not None:
_restore_context(context[0])
current_task = SyncToAsync.get_current_task()
self.launch_map[current_task] = source_thread
try:
# If we have an exception, run the function inside the except block
# after raising it so exc_info is correctly populated.
if exc_info[1]:
try:
raise exc_info[1]
except BaseException:
result = await self.awaitable(*args, **kwargs)
else:
result = await self.awaitable(*args, **kwargs)
except BaseException as e:
call_result.set_exception(e)
else:
call_result.set_result(result)
finally:
del self.launch_map[current_task]
context[0] = contextvars.copy_context()
class SyncToAsync:
"""
Utility class which turns a synchronous callable into an awaitable that
runs in a threadpool. It also sets a threadlocal inside the thread so
calls to AsyncToSync can escape it.
If thread_sensitive is passed, the code will run in the same thread as any
outer code. This is needed for underlying Python code that is not
threadsafe (for example, code which handles SQLite database connections).
If the outermost program is async (i.e. SyncToAsync is outermost), then
this will be a dedicated single sub-thread that all sync code runs in,
one after the other. If the outermost program is sync (i.e. AsyncToSync is
outermost), this will just be the main thread. This is achieved by idling
with a CurrentThreadExecutor while AsyncToSync is blocking its sync parent,
rather than just blocking.
If executor is passed in, that will be used instead of the loop's default executor.
In order to pass in an executor, thread_sensitive must be set to False, otherwise
a TypeError will be raised.
"""
# If they've set ASGI_THREADS, update the default asyncio executor for now
if "ASGI_THREADS" in os.environ:
# We use get_event_loop here - not get_running_loop - as this will
# be run at import time, and we want to update the main thread's loop.
loop = asyncio.get_event_loop()
loop.set_default_executor(
ThreadPoolExecutor(max_workers=int(os.environ["ASGI_THREADS"]))
)
# Maps launched threads to the coroutines that spawned them
launch_map: "Dict[threading.Thread, asyncio.Task[object]]" = {}
# Storage for main event loop references
threadlocal = threading.local()
# Single-thread executor for thread-sensitive code
single_thread_executor = ThreadPoolExecutor(max_workers=1)
# Maintain a contextvar for the current execution context. Optionally used
# for thread sensitive mode.
thread_sensitive_context: "contextvars.ContextVar[str]" = contextvars.ContextVar(
"thread_sensitive_context"
)
# Contextvar that is used to detect if the single thread executor
# would be awaited on while already being used in the same context
deadlock_context: "contextvars.ContextVar[bool]" = contextvars.ContextVar(
"deadlock_context"
)
# Maintaining a weak reference to the context ensures that thread pools are
# erased once the context goes out of scope. This terminates the thread pool.
context_to_thread_executor: "weakref.WeakKeyDictionary[object, ThreadPoolExecutor]" = (
weakref.WeakKeyDictionary()
)
def __init__(
self,
func: Callable[..., Any],
thread_sensitive: bool = True,
executor: Optional["ThreadPoolExecutor"] = None,
) -> None:
if (
not callable(func)
or _iscoroutinefunction_or_partial(func)
or _iscoroutinefunction_or_partial(getattr(func, "__call__", func))
):
raise TypeError("sync_to_async can only be applied to sync functions.")
self.func = func
functools.update_wrapper(self, func)
self._thread_sensitive = thread_sensitive
self._is_coroutine = asyncio.coroutines._is_coroutine # type: ignore
if thread_sensitive and executor is not None:
raise TypeError("executor must not be set when thread_sensitive is True")
self._executor = executor
try:
self.__self__ = func.__self__ # type: ignore
except AttributeError:
pass
async def __call__(self, *args, **kwargs):
loop = asyncio.get_running_loop()
# Work out what thread to run the code in
if self._thread_sensitive:
if hasattr(AsyncToSync.executors, "current"):
# If we have a parent sync thread above somewhere, use that
executor = AsyncToSync.executors.current
elif self.thread_sensitive_context and self.thread_sensitive_context.get(
None
):
# If we have a way of retrieving the current context, attempt
# to use a per-context thread pool executor
thread_sensitive_context = self.thread_sensitive_context.get()
if thread_sensitive_context in self.context_to_thread_executor:
# Re-use thread executor in current context
executor = self.context_to_thread_executor[thread_sensitive_context]
else:
# Create new thread executor in current context
executor = ThreadPoolExecutor(max_workers=1)
self.context_to_thread_executor[thread_sensitive_context] = executor
elif loop in AsyncToSync.loop_thread_executors:
# Re-use thread executor for running loop
executor = AsyncToSync.loop_thread_executors[loop]
elif self.deadlock_context and self.deadlock_context.get(False):
raise RuntimeError(
"Single thread executor already being used, would deadlock"
)
else:
# Otherwise, we run it in a fixed single thread
executor = self.single_thread_executor
if self.deadlock_context:
self.deadlock_context.set(True)
else:
# Use the passed in executor, or the loop's default if it is None
executor = self._executor
context = contextvars.copy_context()
child = functools.partial(self.func, *args, **kwargs)
func = context.run
args = (child,)
kwargs = {}
try:
# Run the code in the right thread
future = loop.run_in_executor(
executor,
functools.partial(
self.thread_handler,
loop,
self.get_current_task(),
sys.exc_info(),
func,
*args,
**kwargs,
),
)
ret = await asyncio.wait_for(future, timeout=None)
finally:
_restore_context(context)
if self.deadlock_context:
self.deadlock_context.set(False)
return ret
def __get__(self, parent, objtype):
"""
Include self for methods
"""
return functools.partial(self.__call__, parent)
def thread_handler(self, loop, source_task, exc_info, func, *args, **kwargs):
"""
Wraps the sync application with exception handling.
"""
# Set the threadlocal for AsyncToSync
self.threadlocal.main_event_loop = loop
self.threadlocal.main_event_loop_pid = os.getpid()
# Set the task mapping (used for the locals module)
current_thread = threading.current_thread()
if AsyncToSync.launch_map.get(source_task) == current_thread:
# Our parent task was launched from this same thread, so don't make
# a launch map entry - let it shortcut over us! (and stop infinite loops)
parent_set = False
else:
self.launch_map[current_thread] = source_task
parent_set = True
# Run the function
try:
# If we have an exception, run the function inside the except block
# after raising it so exc_info is correctly populated.
if exc_info[1]:
try:
raise exc_info[1]
except BaseException:
return func(*args, **kwargs)
else:
return func(*args, **kwargs)
finally:
# Only delete the launch_map parent if we set it, otherwise it is
# from someone else.
if parent_set:
del self.launch_map[current_thread]
@staticmethod
def get_current_task():
"""
Implementation of asyncio.current_task()
that returns None if there is no task.
"""
try:
return asyncio.current_task()
except RuntimeError:
return None
# Lowercase aliases (and decorator friendliness)
async_to_sync = AsyncToSync
@overload
def sync_to_async(
func: None = None,
thread_sensitive: bool = True,
executor: Optional["ThreadPoolExecutor"] = None,
) -> Callable[[Callable[..., Any]], SyncToAsync]:
...
@overload
def sync_to_async(
func: Callable[..., Any],
thread_sensitive: bool = True,
executor: Optional["ThreadPoolExecutor"] = None,
) -> SyncToAsync:
...
def sync_to_async(
func=None,
thread_sensitive=True,
executor=None,
):
if func is None:
return lambda f: SyncToAsync(
f,
thread_sensitive=thread_sensitive,
executor=executor,
)
return SyncToAsync(
func,
thread_sensitive=thread_sensitive,
executor=executor,
)

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import asyncio
import time
from .compatibility import guarantee_single_callable
from .timeout import timeout as async_timeout
class ApplicationCommunicator:
"""
Runs an ASGI application in a test mode, allowing sending of
messages to it and retrieval of messages it sends.
"""
def __init__(self, application, scope):
self.application = guarantee_single_callable(application)
self.scope = scope
self.input_queue = asyncio.Queue()
self.output_queue = asyncio.Queue()
self.future = asyncio.ensure_future(
self.application(scope, self.input_queue.get, self.output_queue.put)
)
async def wait(self, timeout=1):
"""
Waits for the application to stop itself and returns any exceptions.
"""
try:
async with async_timeout(timeout):
try:
await self.future
self.future.result()
except asyncio.CancelledError:
pass
finally:
if not self.future.done():
self.future.cancel()
try:
await self.future
except asyncio.CancelledError:
pass
def stop(self, exceptions=True):
if not self.future.done():
self.future.cancel()
elif exceptions:
# Give a chance to raise any exceptions
self.future.result()
def __del__(self):
# Clean up on deletion
try:
self.stop(exceptions=False)
except RuntimeError:
# Event loop already stopped
pass
async def send_input(self, message):
"""
Sends a single message to the application
"""
# Give it the message
await self.input_queue.put(message)
async def receive_output(self, timeout=1):
"""
Receives a single message from the application, with optional timeout.
"""
# Make sure there's not an exception to raise from the task
if self.future.done():
self.future.result()
# Wait and receive the message
try:
async with async_timeout(timeout):
return await self.output_queue.get()
except asyncio.TimeoutError as e:
# See if we have another error to raise inside
if self.future.done():
self.future.result()
else:
self.future.cancel()
try:
await self.future
except asyncio.CancelledError:
pass
raise e
async def receive_nothing(self, timeout=0.1, interval=0.01):
"""
Checks that there is no message to receive in the given time.
"""
# `interval` has precedence over `timeout`
start = time.monotonic()
while time.monotonic() - start < timeout:
if not self.output_queue.empty():
return False
await asyncio.sleep(interval)
return self.output_queue.empty()

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# This code is originally sourced from the aio-libs project "async_timeout",
# under the Apache 2.0 license. You may see the original project at
# https://github.com/aio-libs/async-timeout
# It is vendored here to reduce chain-dependencies on this library, and
# modified slightly to remove some features we don't use.
import asyncio
from types import TracebackType
from typing import Any, Optional, Type
class timeout:
"""timeout context manager.
Useful in cases when you want to apply timeout logic around block
of code or in cases when asyncio.wait_for is not suitable. For example:
>>> with timeout(0.001):
... async with aiohttp.get('https://github.com') as r:
... await r.text()
timeout - value in seconds or None to disable timeout logic
loop - asyncio compatible event loop
"""
def __init__(
self,
timeout: Optional[float],
*,
loop: Optional[asyncio.AbstractEventLoop] = None,
) -> None:
self._timeout = timeout
if loop is None:
loop = asyncio.get_event_loop()
self._loop = loop
self._task = None # type: Optional[asyncio.Task[Any]]
self._cancelled = False
self._cancel_handler = None # type: Optional[asyncio.Handle]
self._cancel_at = None # type: Optional[float]
def __enter__(self) -> "timeout":
return self._do_enter()
def __exit__(
self,
exc_type: Type[BaseException],
exc_val: BaseException,
exc_tb: TracebackType,
) -> Optional[bool]:
self._do_exit(exc_type)
return None
async def __aenter__(self) -> "timeout":
return self._do_enter()
async def __aexit__(
self,
exc_type: Type[BaseException],
exc_val: BaseException,
exc_tb: TracebackType,
) -> None:
self._do_exit(exc_type)
@property
def expired(self) -> bool:
return self._cancelled
@property
def remaining(self) -> Optional[float]:
if self._cancel_at is not None:
return max(self._cancel_at - self._loop.time(), 0.0)
else:
return None
def _do_enter(self) -> "timeout":
# Support Tornado 5- without timeout
# Details: https://github.com/python/asyncio/issues/392
if self._timeout is None:
return self
self._task = asyncio.current_task(self._loop)
if self._task is None:
raise RuntimeError(
"Timeout context manager should be used " "inside a task"
)
if self._timeout <= 0:
self._loop.call_soon(self._cancel_task)
return self
self._cancel_at = self._loop.time() + self._timeout
self._cancel_handler = self._loop.call_at(self._cancel_at, self._cancel_task)
return self
def _do_exit(self, exc_type: Type[BaseException]) -> None:
if exc_type is asyncio.CancelledError and self._cancelled:
self._cancel_handler = None
self._task = None
raise asyncio.TimeoutError
if self._timeout is not None and self._cancel_handler is not None:
self._cancel_handler.cancel()
self._cancel_handler = None
self._task = None
return None
def _cancel_task(self) -> None:
if self._task is not None:
self._task.cancel()
self._cancelled = True

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import sys
from typing import Awaitable, Callable, Dict, Iterable, Optional, Tuple, Type, Union
if sys.version_info >= (3, 8):
from typing import Literal, Protocol, TypedDict
else:
from typing_extensions import Literal, Protocol, TypedDict
__all__ = (
"ASGIVersions",
"HTTPScope",
"WebSocketScope",
"LifespanScope",
"WWWScope",
"Scope",
"HTTPRequestEvent",
"HTTPResponseStartEvent",
"HTTPResponseBodyEvent",
"HTTPServerPushEvent",
"HTTPDisconnectEvent",
"WebSocketConnectEvent",
"WebSocketAcceptEvent",
"WebSocketReceiveEvent",
"WebSocketSendEvent",
"WebSocketResponseStartEvent",
"WebSocketResponseBodyEvent",
"WebSocketDisconnectEvent",
"WebSocketCloseEvent",
"LifespanStartupEvent",
"LifespanShutdownEvent",
"LifespanStartupCompleteEvent",
"LifespanStartupFailedEvent",
"LifespanShutdownCompleteEvent",
"LifespanShutdownFailedEvent",
"ASGIReceiveEvent",
"ASGISendEvent",
"ASGIReceiveCallable",
"ASGISendCallable",
"ASGI2Protocol",
"ASGI2Application",
"ASGI3Application",
"ASGIApplication",
)
class ASGIVersions(TypedDict):
spec_version: str
version: Union[Literal["2.0"], Literal["3.0"]]
class HTTPScope(TypedDict):
type: Literal["http"]
asgi: ASGIVersions
http_version: str
method: str
scheme: str
path: str
raw_path: bytes
query_string: bytes
root_path: str
headers: Iterable[Tuple[bytes, bytes]]
client: Optional[Tuple[str, int]]
server: Optional[Tuple[str, Optional[int]]]
extensions: Optional[Dict[str, Dict[object, object]]]
class WebSocketScope(TypedDict):
type: Literal["websocket"]
asgi: ASGIVersions
http_version: str
scheme: str
path: str
raw_path: bytes
query_string: bytes
root_path: str
headers: Iterable[Tuple[bytes, bytes]]
client: Optional[Tuple[str, int]]
server: Optional[Tuple[str, Optional[int]]]
subprotocols: Iterable[str]
extensions: Optional[Dict[str, Dict[object, object]]]
class LifespanScope(TypedDict):
type: Literal["lifespan"]
asgi: ASGIVersions
WWWScope = Union[HTTPScope, WebSocketScope]
Scope = Union[HTTPScope, WebSocketScope, LifespanScope]
class HTTPRequestEvent(TypedDict):
type: Literal["http.request"]
body: bytes
more_body: bool
class HTTPResponseStartEvent(TypedDict):
type: Literal["http.response.start"]
status: int
headers: Iterable[Tuple[bytes, bytes]]
class HTTPResponseBodyEvent(TypedDict):
type: Literal["http.response.body"]
body: bytes
more_body: bool
class HTTPServerPushEvent(TypedDict):
type: Literal["http.response.push"]
path: str
headers: Iterable[Tuple[bytes, bytes]]
class HTTPDisconnectEvent(TypedDict):
type: Literal["http.disconnect"]
class WebSocketConnectEvent(TypedDict):
type: Literal["websocket.connect"]
class WebSocketAcceptEvent(TypedDict):
type: Literal["websocket.accept"]
subprotocol: Optional[str]
headers: Iterable[Tuple[bytes, bytes]]
class WebSocketReceiveEvent(TypedDict):
type: Literal["websocket.receive"]
bytes: Optional[bytes]
text: Optional[str]
class WebSocketSendEvent(TypedDict):
type: Literal["websocket.send"]
bytes: Optional[bytes]
text: Optional[str]
class WebSocketResponseStartEvent(TypedDict):
type: Literal["websocket.http.response.start"]
status: int
headers: Iterable[Tuple[bytes, bytes]]
class WebSocketResponseBodyEvent(TypedDict):
type: Literal["websocket.http.response.body"]
body: bytes
more_body: bool
class WebSocketDisconnectEvent(TypedDict):
type: Literal["websocket.disconnect"]
code: int
class WebSocketCloseEvent(TypedDict):
type: Literal["websocket.close"]
code: int
reason: Optional[str]
class LifespanStartupEvent(TypedDict):
type: Literal["lifespan.startup"]
class LifespanShutdownEvent(TypedDict):
type: Literal["lifespan.shutdown"]
class LifespanStartupCompleteEvent(TypedDict):
type: Literal["lifespan.startup.complete"]
class LifespanStartupFailedEvent(TypedDict):
type: Literal["lifespan.startup.failed"]
message: str
class LifespanShutdownCompleteEvent(TypedDict):
type: Literal["lifespan.shutdown.complete"]
class LifespanShutdownFailedEvent(TypedDict):
type: Literal["lifespan.shutdown.failed"]
message: str
ASGIReceiveEvent = Union[
HTTPRequestEvent,
HTTPDisconnectEvent,
WebSocketConnectEvent,
WebSocketReceiveEvent,
WebSocketDisconnectEvent,
LifespanStartupEvent,
LifespanShutdownEvent,
]
ASGISendEvent = Union[
HTTPResponseStartEvent,
HTTPResponseBodyEvent,
HTTPServerPushEvent,
HTTPDisconnectEvent,
WebSocketAcceptEvent,
WebSocketSendEvent,
WebSocketResponseStartEvent,
WebSocketResponseBodyEvent,
WebSocketCloseEvent,
LifespanStartupCompleteEvent,
LifespanStartupFailedEvent,
LifespanShutdownCompleteEvent,
LifespanShutdownFailedEvent,
]
ASGIReceiveCallable = Callable[[], Awaitable[ASGIReceiveEvent]]
ASGISendCallable = Callable[[ASGISendEvent], Awaitable[None]]
class ASGI2Protocol(Protocol):
def __init__(self, scope: Scope) -> None:
...
async def __call__(
self, receive: ASGIReceiveCallable, send: ASGISendCallable
) -> None:
...
ASGI2Application = Type[ASGI2Protocol]
ASGI3Application = Callable[
[
Scope,
ASGIReceiveCallable,
ASGISendCallable,
],
Awaitable[None],
]
ASGIApplication = Union[ASGI2Application, ASGI3Application]

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from io import BytesIO
from tempfile import SpooledTemporaryFile
from asgiref.sync import AsyncToSync, sync_to_async
class WsgiToAsgi:
"""
Wraps a WSGI application to make it into an ASGI application.
"""
def __init__(self, wsgi_application):
self.wsgi_application = wsgi_application
async def __call__(self, scope, receive, send):
"""
ASGI application instantiation point.
We return a new WsgiToAsgiInstance here with the WSGI app
and the scope, ready to respond when it is __call__ed.
"""
await WsgiToAsgiInstance(self.wsgi_application)(scope, receive, send)
class WsgiToAsgiInstance:
"""
Per-socket instance of a wrapped WSGI application
"""
def __init__(self, wsgi_application):
self.wsgi_application = wsgi_application
self.response_started = False
self.response_content_length = None
async def __call__(self, scope, receive, send):
if scope["type"] != "http":
raise ValueError("WSGI wrapper received a non-HTTP scope")
self.scope = scope
with SpooledTemporaryFile(max_size=65536) as body:
# Alright, wait for the http.request messages
while True:
message = await receive()
if message["type"] != "http.request":
raise ValueError("WSGI wrapper received a non-HTTP-request message")
body.write(message.get("body", b""))
if not message.get("more_body"):
break
body.seek(0)
# Wrap send so it can be called from the subthread
self.sync_send = AsyncToSync(send)
# Call the WSGI app
await self.run_wsgi_app(body)
def build_environ(self, scope, body):
"""
Builds a scope and request body into a WSGI environ object.
"""
environ = {
"REQUEST_METHOD": scope["method"],
"SCRIPT_NAME": scope.get("root_path", "").encode("utf8").decode("latin1"),
"PATH_INFO": scope["path"].encode("utf8").decode("latin1"),
"QUERY_STRING": scope["query_string"].decode("ascii"),
"SERVER_PROTOCOL": "HTTP/%s" % scope["http_version"],
"wsgi.version": (1, 0),
"wsgi.url_scheme": scope.get("scheme", "http"),
"wsgi.input": body,
"wsgi.errors": BytesIO(),
"wsgi.multithread": True,
"wsgi.multiprocess": True,
"wsgi.run_once": False,
}
# Get server name and port - required in WSGI, not in ASGI
if "server" in scope:
environ["SERVER_NAME"] = scope["server"][0]
environ["SERVER_PORT"] = str(scope["server"][1])
else:
environ["SERVER_NAME"] = "localhost"
environ["SERVER_PORT"] = "80"
if "client" in scope:
environ["REMOTE_ADDR"] = scope["client"][0]
# Go through headers and make them into environ entries
for name, value in self.scope.get("headers", []):
name = name.decode("latin1")
if name == "content-length":
corrected_name = "CONTENT_LENGTH"
elif name == "content-type":
corrected_name = "CONTENT_TYPE"
else:
corrected_name = "HTTP_%s" % name.upper().replace("-", "_")
# HTTPbis say only ASCII chars are allowed in headers, but we latin1 just in case
value = value.decode("latin1")
if corrected_name in environ:
value = environ[corrected_name] + "," + value
environ[corrected_name] = value
return environ
def start_response(self, status, response_headers, exc_info=None):
"""
WSGI start_response callable.
"""
# Don't allow re-calling once response has begun
if self.response_started:
raise exc_info[1].with_traceback(exc_info[2])
# Don't allow re-calling without exc_info
if hasattr(self, "response_start") and exc_info is None:
raise ValueError(
"You cannot call start_response a second time without exc_info"
)
# Extract status code
status_code, _ = status.split(" ", 1)
status_code = int(status_code)
# Extract headers
headers = [
(name.lower().encode("ascii"), value.encode("ascii"))
for name, value in response_headers
]
# Extract content-length
self.response_content_length = None
for name, value in response_headers:
if name.lower() == "content-length":
self.response_content_length = int(value)
# Build and send response start message.
self.response_start = {
"type": "http.response.start",
"status": status_code,
"headers": headers,
}
@sync_to_async
def run_wsgi_app(self, body):
"""
Called in a subthread to run the WSGI app. We encapsulate like
this so that the start_response callable is called in the same thread.
"""
# Translate the scope and incoming request body into a WSGI environ
environ = self.build_environ(self.scope, body)
# Run the WSGI app
bytes_sent = 0
for output in self.wsgi_application(environ, self.start_response):
# If this is the first response, include the response headers
if not self.response_started:
self.response_started = True
self.sync_send(self.response_start)
# If the application supplies a Content-Length header
if self.response_content_length is not None:
# The server should not transmit more bytes to the client than the header allows
bytes_allowed = self.response_content_length - bytes_sent
if len(output) > bytes_allowed:
output = output[:bytes_allowed]
self.sync_send(
{"type": "http.response.body", "body": output, "more_body": True}
)
bytes_sent += len(output)
# The server should stop iterating over the response when enough data has been sent
if bytes_sent == self.response_content_length:
break
# Close connection
if not self.response_started:
self.response_started = True
self.sync_send(self.response_start)
self.sync_send({"type": "http.response.body"})

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Main contributors
-----------------
- Hideo Hattori (https://github.com/hhatto)
- Steven Myint (https://github.com/myint)
- Bill Wendling (https://github.com/gwelymernans)
Patches
-------
- Fraser Tweedale (https://github.com/frasertweedale)
- clach04 (https://github.com/clach04)
- Marc Abramowitz (https://github.com/msabramo)
- dellis23 (https://github.com/dellis23)
- Sam Vilain (https://github.com/samv)
- Florent Xicluna (https://github.com/florentx)
- Andras Tim (https://github.com/andras-tim)
- tomscytale (https://github.com/tomscytale)
- Filip Noetzel (https://github.com/peritus)
- Erik Bray (https://github.com/iguananaut)
- Christopher Medrela (https://github.com/chrismedrela)
- 小明 (https://github.com/dongweiming)
- Andy Hayden (https://github.com/hayd)
- Fabio Zadrozny (https://github.com/fabioz)
- Alex Chernetz (https://github.com/achernet)
- Marc Schlaich (https://github.com/schlamar)
- E. M. Bray (https://github.com/embray)
- Thomas Hisch (https://github.com/thisch)
- Florian Best (https://github.com/spaceone)
- Ian Clark (https://github.com/evenicoulddoit)
- Khairi Hafsham (https://github.com/khairihafsham)
- Neil Halelamien (https://github.com/neilsh)
- Hashem Nasarat (https://github.com/Hnasar)
- Hugo van Kemenade (https://github.com/hugovk)
- gmbnomis (https://github.com/gmbnomis)
- Samuel Lelièvre (https://github.com/slel)
- bigredengineer (https://github.com/bigredengineer)
- Kai Chen (https://github.com/kx-chen)
- Anthony Sottile (https://github.com/asottile)
- 秋葉 (https://github.com/Hanaasagi)
- Christian Clauss (https://github.com/cclauss)
- tobixx (https://github.com/tobixx)
- bigredengineer (https://github.com/bigredengineer)
- Bastien Gérard (https://github.com/bagerard)
- nicolasbonifas (https://github.com/nicolasbonifas)
- Andrii Yurchuk (https://github.com/Ch00k)
- José M. Guisado (https://github.com/pvxe)
- Dai Truong (https://github.com/NovaDev94)
- jnozsc (https://github.com/jnozsc)
- Edwin Shepherd (https://github.com/shardros)

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pip

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Copyright (C) 2010-2011 Hideo Hattori
Copyright (C) 2011-2013 Hideo Hattori, Steven Myint
Copyright (C) 2013-2016 Hideo Hattori, Steven Myint, Bill Wendling
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.

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Metadata-Version: 2.1
Name: autopep8
Version: 1.7.0
Summary: A tool that automatically formats Python code to conform to the PEP 8 style guide
Home-page: https://github.com/hhatto/autopep8
Author: Hideo Hattori
Author-email: hhatto.jp@gmail.com
License: Expat License
Keywords: automation,pep8,format,pycodestyle
Classifier: Development Status :: 5 - Production/Stable
Classifier: Environment :: Console
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: MIT License
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 2
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.6
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: 3.8
Classifier: Programming Language :: Python :: 3.9
Classifier: Programming Language :: Python :: 3.10
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Classifier: Topic :: Software Development :: Quality Assurance
License-File: LICENSE
License-File: AUTHORS.rst
Requires-Dist: pycodestyle (>=2.9.1)
Requires-Dist: toml
========
autopep8
========
.. image:: https://img.shields.io/pypi/v/autopep8.svg
:target: https://pypi.org/project/autopep8/
:alt: PyPI Version
.. image:: https://github.com/hhatto/autopep8/workflows/Python%20package/badge.svg
:target: https://github.com/hhatto/autopep8/actions
:alt: Build status
.. image:: https://codecov.io/gh/hhatto/autopep8/branch/main/graph/badge.svg
:target: https://codecov.io/gh/hhatto/autopep8
:alt: Code Coverage
autopep8 automatically formats Python code to conform to the `PEP 8`_ style
guide. It uses the pycodestyle_ utility to determine what parts of the code
needs to be formatted. autopep8 is capable of fixing most of the formatting
issues_ that can be reported by pycodestyle.
.. _PEP 8: https://www.python.org/dev/peps/pep-0008/
.. _issues: https://pycodestyle.readthedocs.org/en/latest/intro.html#error-codes
.. contents::
Installation
============
From pip::
$ pip install --upgrade autopep8
Consider using the ``--user`` option_.
.. _option: https://pip.pypa.io/en/latest/user_guide/#user-installs
Requirements
============
autopep8 requires pycodestyle_.
.. _pycodestyle: https://github.com/PyCQA/pycodestyle
Usage
=====
To modify a file in place (with aggressive level 2)::
$ autopep8 --in-place --aggressive --aggressive <filename>
Before running autopep8.
.. code-block:: python
import math, sys;
def example1():
####This is a long comment. This should be wrapped to fit within 72 characters.
some_tuple=( 1,2, 3,'a' );
some_variable={'long':'Long code lines should be wrapped within 79 characters.',
'other':[math.pi, 100,200,300,9876543210,'This is a long string that goes on'],
'more':{'inner':'This whole logical line should be wrapped.',some_tuple:[1,
20,300,40000,500000000,60000000000000000]}}
return (some_tuple, some_variable)
def example2(): return {'has_key() is deprecated':True}.has_key({'f':2}.has_key(''));
class Example3( object ):
def __init__ ( self, bar ):
#Comments should have a space after the hash.
if bar : bar+=1; bar=bar* bar ; return bar
else:
some_string = """
Indentation in multiline strings should not be touched.
Only actual code should be reindented.
"""
return (sys.path, some_string)
After running autopep8.
.. code-block:: python
import math
import sys
def example1():
# This is a long comment. This should be wrapped to fit within 72
# characters.
some_tuple = (1, 2, 3, 'a')
some_variable = {
'long': 'Long code lines should be wrapped within 79 characters.',
'other': [
math.pi,
100,
200,
300,
9876543210,
'This is a long string that goes on'],
'more': {
'inner': 'This whole logical line should be wrapped.',
some_tuple: [
1,
20,
300,
40000,
500000000,
60000000000000000]}}
return (some_tuple, some_variable)
def example2(): return ('' in {'f': 2}) in {'has_key() is deprecated': True}
class Example3(object):
def __init__(self, bar):
# Comments should have a space after the hash.
if bar:
bar += 1
bar = bar * bar
return bar
else:
some_string = """
Indentation in multiline strings should not be touched.
Only actual code should be reindented.
"""
return (sys.path, some_string)
Options::
usage: autopep8 [-h] [--version] [-v] [-d] [-i] [--global-config filename]
[--ignore-local-config] [-r] [-j n] [-p n] [-a]
[--experimental] [--exclude globs] [--list-fixes]
[--ignore errors] [--select errors] [--max-line-length n]
[--line-range line line] [--hang-closing] [--exit-code]
[files [files ...]]
Automatically formats Python code to conform to the PEP 8 style guide.
positional arguments:
files files to format or '-' for standard in
optional arguments:
-h, --help show this help message and exit
--version show program's version number and exit
-v, --verbose print verbose messages; multiple -v result in more
verbose messages
-d, --diff print the diff for the fixed source
-i, --in-place make changes to files in place
--global-config filename
path to a global pep8 config file; if this file does
not exist then this is ignored (default:
~/.config/pep8)
--ignore-local-config
don't look for and apply local config files; if not
passed, defaults are updated with any config files in
the project's root directory
-r, --recursive run recursively over directories; must be used with
--in-place or --diff
-j n, --jobs n number of parallel jobs; match CPU count if value is
less than 1
-p n, --pep8-passes n
maximum number of additional pep8 passes (default:
infinite)
-a, --aggressive enable non-whitespace changes; multiple -a result in
more aggressive changes
--experimental enable experimental fixes
--exclude globs exclude file/directory names that match these comma-
separated globs
--list-fixes list codes for fixes; used by --ignore and --select
--ignore errors do not fix these errors/warnings (default:
E226,E24,W50,W690)
--select errors fix only these errors/warnings (e.g. E4,W)
--max-line-length n set maximum allowed line length (default: 79)
--line-range line line, --range line line
only fix errors found within this inclusive range of
line numbers (e.g. 1 99); line numbers are indexed at
1
--hang-closing hang-closing option passed to pycodestyle
--exit-code change to behavior of exit code. default behavior of
return value, 0 is no differences, 1 is error exit.
return 2 when add this option. 2 is exists
differences.
Features
========
autopep8 fixes the following issues_ reported by pycodestyle_::
E101 - Reindent all lines.
E11 - Fix indentation.
E121 - Fix indentation to be a multiple of four.
E122 - Add absent indentation for hanging indentation.
E123 - Align closing bracket to match opening bracket.
E124 - Align closing bracket to match visual indentation.
E125 - Indent to distinguish line from next logical line.
E126 - Fix over-indented hanging indentation.
E127 - Fix visual indentation.
E128 - Fix visual indentation.
E129 - Fix visual indentation.
E131 - Fix hanging indent for unaligned continuation line.
E133 - Fix missing indentation for closing bracket.
E20 - Remove extraneous whitespace.
E211 - Remove extraneous whitespace.
E22 - Fix extraneous whitespace around keywords.
E224 - Remove extraneous whitespace around operator.
E225 - Fix missing whitespace around operator.
E226 - Fix missing whitespace around arithmetic operator.
E227 - Fix missing whitespace around bitwise/shift operator.
E228 - Fix missing whitespace around modulo operator.
E231 - Add missing whitespace.
E241 - Fix extraneous whitespace around keywords.
E242 - Remove extraneous whitespace around operator.
E251 - Remove whitespace around parameter '=' sign.
E252 - Missing whitespace around parameter equals.
E26 - Fix spacing after comment hash for inline comments.
E265 - Fix spacing after comment hash for block comments.
E266 - Fix too many leading '#' for block comments.
E27 - Fix extraneous whitespace around keywords.
E301 - Add missing blank line.
E302 - Add missing 2 blank lines.
E303 - Remove extra blank lines.
E304 - Remove blank line following function decorator.
E305 - Expected 2 blank lines after end of function or class.
E306 - Expected 1 blank line before a nested definition.
E401 - Put imports on separate lines.
E402 - Fix module level import not at top of file
E501 - Try to make lines fit within --max-line-length characters.
E502 - Remove extraneous escape of newline.
E701 - Put colon-separated compound statement on separate lines.
E70 - Put semicolon-separated compound statement on separate lines.
E711 - Fix comparison with None.
E712 - Fix comparison with boolean.
E713 - Use 'not in' for test for membership.
E714 - Use 'is not' test for object identity.
E721 - Use "isinstance()" instead of comparing types directly.
E722 - Fix bare except.
E731 - Use a def when use do not assign a lambda expression.
W291 - Remove trailing whitespace.
W292 - Add a single newline at the end of the file.
W293 - Remove trailing whitespace on blank line.
W391 - Remove trailing blank lines.
W503 - Fix line break before binary operator.
W504 - Fix line break after binary operator.
W601 - Use "in" rather than "has_key()".
W602 - Fix deprecated form of raising exception.
W603 - Use "!=" instead of "<>"
W604 - Use "repr()" instead of backticks.
W605 - Fix invalid escape sequence 'x'.
W690 - Fix various deprecated code (via lib2to3).
autopep8 also fixes some issues not found by pycodestyle_.
- Correct deprecated or non-idiomatic Python code (via ``lib2to3``). Use this
for making Python 2.7 code more compatible with Python 3. (This is triggered
if ``W690`` is enabled.)
- Normalize files with mixed line endings.
- Put a blank line between a class docstring and its first method
declaration. (Enabled with ``E301``.)
- Remove blank lines between a function declaration and its docstring. (Enabled
with ``E303``.)
autopep8 avoids fixing some issues found by pycodestyle_.
- ``E112``/``E113`` for non comments are reports of bad indentation that break
syntax rules. These should not be modified at all.
- ``E265``, which refers to spacing after comment hash, is ignored if the
comment looks like code. autopep8 avoids modifying these since they are not
real comments. If you really want to get rid of the pycodestyle_ warning,
consider just removing the commented-out code. (This can be automated via
eradicate_.)
.. _eradicate: https://github.com/myint/eradicate
More advanced usage
===================
By default autopep8 only makes whitespace changes. Thus, by default, it does
not fix ``E711`` and ``E712``. (Changing ``x == None`` to ``x is None`` may
change the meaning of the program if ``x`` has its ``__eq__`` method
overridden.) Nor does it correct deprecated code ``W6``. To enable these
more aggressive fixes, use the ``--aggressive`` option::
$ autopep8 --aggressive <filename>
Use multiple ``--aggressive`` to increase the aggressiveness level. For
example, ``E712`` requires aggressiveness level 2 (since ``x == True`` could be
changed to either ``x`` or ``x is True``, but autopep8 chooses the former).
``--aggressive`` will also shorten lines more aggressively. It will also remove
trailing whitespace more aggressively. (Usually, we don't touch trailing
whitespace in docstrings and other multiline strings. And to do even more
aggressive changes to docstrings, use docformatter_.)
.. _docformatter: https://github.com/myint/docformatter
To enable only a subset of the fixes, use the ``--select`` option. For example,
to fix various types of indentation issues::
$ autopep8 --select=E1,W1 <filename>
Similarly, to just fix deprecated code::
$ autopep8 --aggressive --select=W6 <filename>
The above is useful when trying to port a single code base to work with both
Python 2 and Python 3 at the same time.
If the file being fixed is large, you may want to enable verbose progress
messages::
$ autopep8 -v <filename>
Passing in ``--experimental`` enables the following functionality:
- Shortens code lines by taking its length into account
::
$ autopep8 --experimental <filename>
Disabling line-by-line
----------------------
It is possible to disable autopep8 untill it it turned back on again in the file, using ``autopep8: off`` and then renabling ``autopep8: on``.
.. code-block:: python
# autopep8: off
[
[23, 23, 13, 43],
[32, 34, 34, 34],
[56, 34, 34, 11],
[10, 10, 10, 10],
]
# autopep8: on
``fmt: off`` and ``fmt: on`` are also valid.
Use as a module
===============
The simplest way of using autopep8 as a module is via the ``fix_code()``
function:
>>> import autopep8
>>> autopep8.fix_code('x= 123\n')
'x = 123\n'
Or with options:
>>> import autopep8
>>> autopep8.fix_code('x.has_key(y)\n',
... options={'aggressive': 1})
'y in x\n'
>>> autopep8.fix_code('print( 123 )\n',
... options={'ignore': ['E']})
'print( 123 )\n'
Configuration
=============
By default, if ``$HOME/.config/pycodestyle`` (``~\.pycodestyle`` in Windows
environment) exists, it will be used as global configuration file.
Alternatively, you can specify the global configuration file with the
``--global-config`` option.
Also, if ``setup.cfg``, ``tox.ini``, ``.pep8`` and ``.flake8`` files exist
in the directory where the target file exists, it will be used as the
configuration file.
``pep8``, ``pycodestyle``, and ``flake8`` can be used as a section.
configuration file example::
[pycodestyle]
max_line_length = 120
ignore = E501
pyproject.toml
--------------
autopep8 can also use ``pyproject.toml``.
The section must be ``[tool.autopep8]``, and ``pyproject.toml`` takes precedence
over any other configuration files.
configuration file example::
[tool.autopep8]
max_line_length = 120
ignore = "E501,W6" # or ["E501", "W6"]
in-place = true
recursive = true
aggressive = 3
Testing
=======
Test cases are in ``test/test_autopep8.py``. They can be run directly via
``python test/test_autopep8.py`` or via tox_. The latter is useful for
testing against multiple Python interpreters. (We currently test against
CPython versions 2.7, 3.6 3.7 and 3.8. We also test against PyPy.)
.. _`tox`: https://pypi.org/project/tox/
Broad spectrum testing is available via ``test/acid.py``. This script runs
autopep8 against Python code and checks for correctness and completeness of the
code fixes. It can check that the bytecode remains identical.
``test/acid_pypi.py`` makes use of ``acid.py`` to test against the latest
released packages on PyPI.
Troubleshooting
===============
``pkg_resources.DistributionNotFound``
--------------------------------------
If you are using an ancient version of ``setuptools``, you might encounter
``pkg_resources.DistributionNotFound`` when trying to run ``autopep8``. Try
upgrading ``setuptools`` to workaround this ``setuptools`` problem::
$ pip install --upgrade setuptools
Use ``sudo`` if you are installing to the system.
Links
=====
* PyPI_
* GitHub_
* `Travis CI`_
* Coveralls_
.. _PyPI: https://pypi.org/project/autopep8/
.. _GitHub: https://github.com/hhatto/autopep8
.. _`Travis CI`: https://travis-ci.org/hhatto/autopep8
.. _`Coveralls`: https://coveralls.io/r/hhatto/autopep8

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../../../bin/autopep8,sha256=t1G3vaa203Z2FX0MpL9wajptBX3IMXUOxsS53ANwkAI,246
__pycache__/autopep8.cpython-38.pyc,,
autopep8-1.7.0.dist-info/AUTHORS.rst,sha256=tiTPsbzGl9dtXCMEWXbWSV1zan1M-BoWtiixs46GIWk,2003
autopep8-1.7.0.dist-info/INSTALLER,sha256=zuuue4knoyJ-UwPPXg8fezS7VCrXJQrAP7zeNuwvFQg,4
autopep8-1.7.0.dist-info/LICENSE,sha256=jR0COOSFQ0QZFMqwdB1N4-Bwobg2f3h69fIJr7YLCWo,1181
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Wheel-Version: 1.0
Generator: bdist_wheel (0.34.2)
Root-Is-Purelib: true
Tag: py2-none-any
Tag: py3-none-any

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[console_scripts]
autopep8 = autopep8:main

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autopep8

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pip

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Apache Software License 2.0
Copyright (c) 2020, Paul Ganssle (Google)
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

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Apache License
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Metadata-Version: 2.1
Name: backports.zoneinfo
Version: 0.2.1
Summary: Backport of the standard library zoneinfo module
Home-page: https://github.com/pganssle/zoneinfo
Author: Python Software Foundation
Author-email: datetime-sig@python.org
License: Apache-2.0
Project-URL: Source, https://github.com/pganssle/zoneinfo
Project-URL: Documentation, https://zoneinfo.readthedocs.io/en/latest/
Project-URL: Bug Reports, https://github.com/pganssle/zoneinfo/issues
Platform: UNKNOWN
Classifier: Development Status :: 4 - Beta
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: Apache Software License
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3 :: Only
Classifier: Programming Language :: Python :: 3.6
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: 3.8
Requires-Python: >=3.6
Description-Content-Type: text/markdown
Requires-Dist: importlib-resources ; python_version < "3.7"
Provides-Extra: tzdata
Requires-Dist: tzdata ; extra == 'tzdata'
# `backports.zoneinfo`: Backport of the standard library module `zoneinfo`
This package was originally the reference implementation for [PEP 615](https://www.python.org/dev/peps/pep-0615/), which proposes support for the IANA time zone database in the standard library, and now serves as a backport to Python 3.6+ (including PyPy).
This exposes the `backports.zoneinfo` module, which is a backport of the [`zoneinfo`](https://docs.python.org/3.9/library/zoneinfo.html#module-zoneinfo) module. The backport's documentation can be found [on readthedocs](https://zoneinfo.readthedocs.io/en/latest/).
The module uses the system time zone data if available, and falls back to the [`tzdata`](https://tzdata.readthedocs.io/en/latest/) package (available [on PyPI](https://pypi.org/project/tzdata/)) if installed.
## Installation and depending on this library
This module is called [`backports.zoneinfo`](https://pypi.org/project/backports.zoneinfo) on PyPI. To install it in your local environment, use:
```
pip install backports.zoneinfo
```
Or (particularly on Windows), you can also use the `tzdata` extra (which basically just declares a dependency on `tzdata`, so this doesn't actually save you any typing 😅):
```
pip install backports.zoneinfo[tzdata]
```
If you want to use this in your application, it is best to use [PEP 508 environment markers](https://www.python.org/dev/peps/pep-0508/#environment-markers) to declare a dependency *conditional on the Python version*:
```
backports.zoneinfo;python_version<"3.9"
```
Support for `backports.zoneinfo` in Python 3.9+ is currently minimal, since it is expected that you would use the standard library `zoneinfo` module instead.
## Use
The `backports.zoneinfo` module should be a drop-in replacement for the Python 3.9 standard library module `zoneinfo`. If you do not support anything earlier than Python 3.9, **you do not need this library**; if you are supporting Python 3.6+, you may want to use this idiom to "fall back" to ``backports.zoneinfo``:
```python
try:
import zoneinfo
except ImportError:
from backports import zoneinfo
```
To get access to time zones with this module, construct a `ZoneInfo` object and attach it to your datetime:
```python
>>> from backports.zoneinfo import ZoneInfo
>>> from datetime import datetime, timedelta, timezone
>>> dt = datetime(1992, 3, 1, tzinfo=ZoneInfo("Europe/Minsk"))
>>> print(dt)
1992-03-01 00:00:00+02:00
>>> print(dt.utcoffset())
2:00:00
>>> print(dt.tzname())
EET
```
Arithmetic works as expected without the need for a "normalization" step:
```python
>>> dt += timedelta(days=90)
>>> print(dt)
1992-05-30 00:00:00+03:00
>>> dt.utcoffset()
datetime.timedelta(seconds=10800)
>>> dt.tzname()
'EEST'
```
Ambiguous and imaginary times are handled using the `fold` attribute added in [PEP 495](https://www.python.org/dev/peps/pep-0495/):
```python
>>> dt = datetime(2020, 11, 1, 1, tzinfo=ZoneInfo("America/Chicago"))
>>> print(dt)
2020-11-01 01:00:00-05:00
>>> print(dt.replace(fold=1))
2020-11-01 01:00:00-06:00
>>> UTC = timezone.utc
>>> print(dt.astimezone(UTC))
2020-11-01 06:00:00+00:00
>>> print(dt.replace(fold=1).astimezone(UTC))
2020-11-01 07:00:00+00:00
```
# Contributing
Currently we are not accepting contributions to this repository because we have not put the CLA in place and we would like to avoid complicating the process of adoption into the standard library. Contributions to [CPython](https://github.com/python/cpython) will eventually be backported to this repository — see [the Python developer's guide](https://devguide.python.org/) for more information on how to contribute to CPython.

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backports.zoneinfo-0.2.1.dist-info/INSTALLER,sha256=zuuue4knoyJ-UwPPXg8fezS7VCrXJQrAP7zeNuwvFQg,4
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backports/__pycache__/__init__.cpython-38.pyc,,
backports/zoneinfo/__init__.py,sha256=atCU_fMgkQIE-DCjSJOist9GAqaWQAGhrDA5bCXPQxU,1235
backports/zoneinfo/__init__.pyi,sha256=1_T7dB1-Fh1s7f2zNa1QrP9pO_aBHemeaIiJBPQz3Fs,1234
backports/zoneinfo/__pycache__/__init__.cpython-38.pyc,,
backports/zoneinfo/__pycache__/_common.cpython-38.pyc,,
backports/zoneinfo/__pycache__/_tzpath.cpython-38.pyc,,
backports/zoneinfo/__pycache__/_version.cpython-38.pyc,,
backports/zoneinfo/__pycache__/_zoneinfo.cpython-38.pyc,,
backports/zoneinfo/_common.py,sha256=gKuY_V-YKbaabT5VRw1MWYJxfuiDDLCg7UolYYI42rw,5469
backports/zoneinfo/_czoneinfo.cpython-38-x86_64-linux-gnu.so,sha256=h8QcJrT32tvEhZdGnJ0V6VE0Ea7ELE6m4U4W3WXQUU0,148747
backports/zoneinfo/_tzpath.py,sha256=yFkwr6qKvcC6wtuhrJRh487x57L39up8bpl9w-gOGX8,5860
backports/zoneinfo/_version.py,sha256=HfjVOrpTnmZ-xVFCYSVmX50EXaBQeJteUHG-PD6iQs8,22
backports/zoneinfo/_zoneinfo.py,sha256=B1W3KlPeUHjk1qpBybGHorPMvfcLwGF7dtYj-IFAxY4,24353
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Wheel-Version: 1.0
Generator: bdist_wheel (0.34.2)
Root-Is-Purelib: false
Tag: cp38-cp38-manylinux1_x86_64

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backports

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# A Python "namespace package" http://www.python.org/dev/peps/pep-0382/
# This always goes inside of a namespace package's __init__.py
from pkgutil import extend_path
__path__ = extend_path(__path__, __name__) # type: ignore

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__all__ = [
"ZoneInfo",
"reset_tzpath",
"available_timezones",
"TZPATH",
"ZoneInfoNotFoundError",
"InvalidTZPathWarning",
]
import sys
from . import _tzpath
from ._common import ZoneInfoNotFoundError
from ._version import __version__
try:
from ._czoneinfo import ZoneInfo
except ImportError: # pragma: nocover
from ._zoneinfo import ZoneInfo
reset_tzpath = _tzpath.reset_tzpath
available_timezones = _tzpath.available_timezones
InvalidTZPathWarning = _tzpath.InvalidTZPathWarning
if sys.version_info < (3, 7):
# Module-level __getattr__ was added in Python 3.7, so instead of lazily
# populating TZPATH on every access, we will register a callback with
# reset_tzpath to update the top-level tuple.
TZPATH = _tzpath.TZPATH
def _tzpath_callback(new_tzpath):
global TZPATH
TZPATH = new_tzpath
_tzpath.TZPATH_CALLBACKS.append(_tzpath_callback)
del _tzpath_callback
else:
def __getattr__(name):
if name == "TZPATH":
return _tzpath.TZPATH
else:
raise AttributeError(
f"module {__name__!r} has no attribute {name!r}"
)
def __dir__():
return sorted(list(globals()) + ["TZPATH"])

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import os
import typing
from datetime import datetime, tzinfo
from typing import (
Any,
Iterable,
Optional,
Protocol,
Sequence,
Set,
Type,
Union,
)
_T = typing.TypeVar("_T", bound="ZoneInfo")
class _IOBytes(Protocol):
def read(self, __size: int) -> bytes: ...
def seek(self, __size: int, __whence: int = ...) -> Any: ...
class ZoneInfo(tzinfo):
@property
def key(self) -> str: ...
def __init__(self, key: str) -> None: ...
@classmethod
def no_cache(cls: Type[_T], key: str) -> _T: ...
@classmethod
def from_file(
cls: Type[_T], __fobj: _IOBytes, key: Optional[str] = ...
) -> _T: ...
@classmethod
def clear_cache(cls, *, only_keys: Iterable[str] = ...) -> None: ...
# Note: Both here and in clear_cache, the types allow the use of `str` where
# a sequence of strings is required. This should be remedied if a solution
# to this typing bug is found: https://github.com/python/typing/issues/256
def reset_tzpath(
to: Optional[Sequence[Union[os.PathLike, str]]] = ...
) -> None: ...
def available_timezones() -> Set[str]: ...
TZPATH: Sequence[str]
class ZoneInfoNotFoundError(KeyError): ...
class InvalidTZPathWarning(RuntimeWarning): ...

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import struct
def load_tzdata(key):
try:
import importlib.resources as importlib_resources
except ImportError:
import importlib_resources
components = key.split("/")
package_name = ".".join(["tzdata.zoneinfo"] + components[:-1])
resource_name = components[-1]
try:
return importlib_resources.open_binary(package_name, resource_name)
except (ImportError, FileNotFoundError, UnicodeEncodeError):
# There are three types of exception that can be raised that all amount
# to "we cannot find this key":
#
# ImportError: If package_name doesn't exist (e.g. if tzdata is not
# installed, or if there's an error in the folder name like
# Amrica/New_York)
# FileNotFoundError: If resource_name doesn't exist in the package
# (e.g. Europe/Krasnoy)
# UnicodeEncodeError: If package_name or resource_name are not UTF-8,
# such as keys containing a surrogate character.
raise ZoneInfoNotFoundError(f"No time zone found with key {key}")
def load_data(fobj):
header = _TZifHeader.from_file(fobj)
if header.version == 1:
time_size = 4
time_type = "l"
else:
# Version 2+ has 64-bit integer transition times
time_size = 8
time_type = "q"
# Version 2+ also starts with a Version 1 header and data, which
# we need to skip now
skip_bytes = (
header.timecnt * 5 # Transition times and types
+ header.typecnt * 6 # Local time type records
+ header.charcnt # Time zone designations
+ header.leapcnt * 8 # Leap second records
+ header.isstdcnt # Standard/wall indicators
+ header.isutcnt # UT/local indicators
)
fobj.seek(skip_bytes, 1)
# Now we need to read the second header, which is not the same
# as the first
header = _TZifHeader.from_file(fobj)
typecnt = header.typecnt
timecnt = header.timecnt
charcnt = header.charcnt
# The data portion starts with timecnt transitions and indices
if timecnt:
trans_list_utc = struct.unpack(
f">{timecnt}{time_type}", fobj.read(timecnt * time_size)
)
trans_idx = struct.unpack(f">{timecnt}B", fobj.read(timecnt))
else:
trans_list_utc = ()
trans_idx = ()
# Read the ttinfo struct, (utoff, isdst, abbrind)
if typecnt:
utcoff, isdst, abbrind = zip(
*(struct.unpack(">lbb", fobj.read(6)) for i in range(typecnt))
)
else:
utcoff = ()
isdst = ()
abbrind = ()
# Now read the abbreviations. They are null-terminated strings, indexed
# not by position in the array but by position in the unsplit
# abbreviation string. I suppose this makes more sense in C, which uses
# null to terminate the strings, but it's inconvenient here...
abbr_vals = {}
abbr_chars = fobj.read(charcnt)
def get_abbr(idx):
# Gets a string starting at idx and running until the next \x00
#
# We cannot pre-populate abbr_vals by splitting on \x00 because there
# are some zones that use subsets of longer abbreviations, like so:
#
# LMT\x00AHST\x00HDT\x00
#
# Where the idx to abbr mapping should be:
#
# {0: "LMT", 4: "AHST", 5: "HST", 9: "HDT"}
if idx not in abbr_vals:
span_end = abbr_chars.find(b"\x00", idx)
abbr_vals[idx] = abbr_chars[idx:span_end].decode()
return abbr_vals[idx]
abbr = tuple(get_abbr(idx) for idx in abbrind)
# The remainder of the file consists of leap seconds (currently unused) and
# the standard/wall and ut/local indicators, which are metadata we don't need.
# In version 2 files, we need to skip the unnecessary data to get at the TZ string:
if header.version >= 2:
# Each leap second record has size (time_size + 4)
skip_bytes = header.isutcnt + header.isstdcnt + header.leapcnt * 12
fobj.seek(skip_bytes, 1)
c = fobj.read(1) # Should be \n
assert c == b"\n", c
tz_bytes = b""
while True:
c = fobj.read(1)
if c == b"\n":
break
tz_bytes += c
tz_str = tz_bytes
else:
tz_str = None
return trans_idx, trans_list_utc, utcoff, isdst, abbr, tz_str
class _TZifHeader:
__slots__ = [
"version",
"isutcnt",
"isstdcnt",
"leapcnt",
"timecnt",
"typecnt",
"charcnt",
]
def __init__(self, *args):
assert len(self.__slots__) == len(args)
for attr, val in zip(self.__slots__, args):
setattr(self, attr, val)
@classmethod
def from_file(cls, stream):
# The header starts with a 4-byte "magic" value
if stream.read(4) != b"TZif":
raise ValueError("Invalid TZif file: magic not found")
_version = stream.read(1)
if _version == b"\x00":
version = 1
else:
version = int(_version)
stream.read(15)
args = (version,)
# Slots are defined in the order that the bytes are arranged
args = args + struct.unpack(">6l", stream.read(24))
return cls(*args)
class ZoneInfoNotFoundError(KeyError):
"""Exception raised when a ZoneInfo key is not found."""

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import os
import sys
PY36 = sys.version_info < (3, 7)
def reset_tzpath(to=None):
global TZPATH
tzpaths = to
if tzpaths is not None:
if isinstance(tzpaths, (str, bytes)):
raise TypeError(
f"tzpaths must be a list or tuple, "
+ f"not {type(tzpaths)}: {tzpaths!r}"
)
if not all(map(os.path.isabs, tzpaths)):
raise ValueError(_get_invalid_paths_message(tzpaths))
base_tzpath = tzpaths
else:
env_var = os.environ.get("PYTHONTZPATH", None)
if env_var is not None:
base_tzpath = _parse_python_tzpath(env_var)
elif sys.platform != "win32":
base_tzpath = [
"/usr/share/zoneinfo",
"/usr/lib/zoneinfo",
"/usr/share/lib/zoneinfo",
"/etc/zoneinfo",
]
base_tzpath.sort(key=lambda x: not os.path.exists(x))
else:
base_tzpath = ()
TZPATH = tuple(base_tzpath)
if TZPATH_CALLBACKS:
for callback in TZPATH_CALLBACKS:
callback(TZPATH)
def _parse_python_tzpath(env_var):
if not env_var:
return ()
raw_tzpath = env_var.split(os.pathsep)
new_tzpath = tuple(filter(os.path.isabs, raw_tzpath))
# If anything has been filtered out, we will warn about it
if len(new_tzpath) != len(raw_tzpath):
import warnings
msg = _get_invalid_paths_message(raw_tzpath)
warnings.warn(
"Invalid paths specified in PYTHONTZPATH environment variable."
+ msg,
InvalidTZPathWarning,
)
return new_tzpath
def _get_invalid_paths_message(tzpaths):
invalid_paths = (path for path in tzpaths if not os.path.isabs(path))
prefix = "\n "
indented_str = prefix + prefix.join(invalid_paths)
return (
"Paths should be absolute but found the following relative paths:"
+ indented_str
)
if sys.version_info < (3, 8):
def _isfile(path):
# bpo-33721: In Python 3.8 non-UTF8 paths return False rather than
# raising an error. See https://bugs.python.org/issue33721
try:
return os.path.isfile(path)
except ValueError:
return False
else:
_isfile = os.path.isfile
def find_tzfile(key):
"""Retrieve the path to a TZif file from a key."""
_validate_tzfile_path(key)
for search_path in TZPATH:
filepath = os.path.join(search_path, key)
if _isfile(filepath):
return filepath
return None
_TEST_PATH = os.path.normpath(os.path.join("_", "_"))[:-1]
def _validate_tzfile_path(path, _base=_TEST_PATH):
if os.path.isabs(path):
raise ValueError(
f"ZoneInfo keys may not be absolute paths, got: {path}"
)
# We only care about the kinds of path normalizations that would change the
# length of the key - e.g. a/../b -> a/b, or a/b/ -> a/b. On Windows,
# normpath will also change from a/b to a\b, but that would still preserve
# the length.
new_path = os.path.normpath(path)
if len(new_path) != len(path):
raise ValueError(
f"ZoneInfo keys must be normalized relative paths, got: {path}"
)
resolved = os.path.normpath(os.path.join(_base, new_path))
if not resolved.startswith(_base):
raise ValueError(
f"ZoneInfo keys must refer to subdirectories of TZPATH, got: {path}"
)
del _TEST_PATH
def available_timezones():
"""Returns a set containing all available time zones.
.. caution::
This may attempt to open a large number of files, since the best way to
determine if a given file on the time zone search path is to open it
and check for the "magic string" at the beginning.
"""
try:
from importlib import resources
except ImportError:
import importlib_resources as resources
valid_zones = set()
# Start with loading from the tzdata package if it exists: this has a
# pre-assembled list of zones that only requires opening one file.
try:
with resources.open_text("tzdata", "zones") as f:
for zone in f:
zone = zone.strip()
if zone:
valid_zones.add(zone)
except (ImportError, FileNotFoundError):
pass
def valid_key(fpath):
try:
with open(fpath, "rb") as f:
return f.read(4) == b"TZif"
except Exception: # pragma: nocover
return False
for tz_root in TZPATH:
if not os.path.exists(tz_root):
continue
for root, dirnames, files in os.walk(tz_root):
if root == tz_root:
# right/ and posix/ are special directories and shouldn't be
# included in the output of available zones
if "right" in dirnames:
dirnames.remove("right")
if "posix" in dirnames:
dirnames.remove("posix")
for file in files:
fpath = os.path.join(root, file)
key = os.path.relpath(fpath, start=tz_root)
if os.sep != "/": # pragma: nocover
key = key.replace(os.sep, "/")
if not key or key in valid_zones:
continue
if valid_key(fpath):
valid_zones.add(key)
if "posixrules" in valid_zones:
# posixrules is a special symlink-only time zone where it exists, it
# should not be included in the output
valid_zones.remove("posixrules")
return valid_zones
class InvalidTZPathWarning(RuntimeWarning):
"""Warning raised if an invalid path is specified in PYTHONTZPATH."""
TZPATH = ()
TZPATH_CALLBACKS = []
reset_tzpath()

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__version__ = "0.2.1"

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import bisect
import calendar
import collections
import functools
import re
import weakref
from datetime import datetime, timedelta, tzinfo
from . import _common, _tzpath
EPOCH = datetime(1970, 1, 1)
EPOCHORDINAL = datetime(1970, 1, 1).toordinal()
# It is relatively expensive to construct new timedelta objects, and in most
# cases we're looking at the same deltas, like integer numbers of hours, etc.
# To improve speed and memory use, we'll keep a dictionary with references
# to the ones we've already used so far.
#
# Loading every time zone in the 2020a version of the time zone database
# requires 447 timedeltas, which requires approximately the amount of space
# that ZoneInfo("America/New_York") with 236 transitions takes up, so we will
# set the cache size to 512 so that in the common case we always get cache
# hits, but specifically crafted ZoneInfo objects don't leak arbitrary amounts
# of memory.
@functools.lru_cache(maxsize=512)
def _load_timedelta(seconds):
return timedelta(seconds=seconds)
class ZoneInfo(tzinfo):
_strong_cache_size = 8
_strong_cache = collections.OrderedDict()
_weak_cache = weakref.WeakValueDictionary()
__module__ = "backports.zoneinfo"
def __init_subclass__(cls):
cls._strong_cache = collections.OrderedDict()
cls._weak_cache = weakref.WeakValueDictionary()
def __new__(cls, key):
instance = cls._weak_cache.get(key, None)
if instance is None:
instance = cls._weak_cache.setdefault(key, cls._new_instance(key))
instance._from_cache = True
# Update the "strong" cache
cls._strong_cache[key] = cls._strong_cache.pop(key, instance)
if len(cls._strong_cache) > cls._strong_cache_size:
cls._strong_cache.popitem(last=False)
return instance
@classmethod
def no_cache(cls, key):
obj = cls._new_instance(key)
obj._from_cache = False
return obj
@classmethod
def _new_instance(cls, key):
obj = super().__new__(cls)
obj._key = key
obj._file_path = obj._find_tzfile(key)
if obj._file_path is not None:
file_obj = open(obj._file_path, "rb")
else:
file_obj = _common.load_tzdata(key)
with file_obj as f:
obj._load_file(f)
return obj
@classmethod
def from_file(cls, fobj, key=None):
obj = super().__new__(cls)
obj._key = key
obj._file_path = None
obj._load_file(fobj)
obj._file_repr = repr(fobj)
# Disable pickling for objects created from files
obj.__reduce__ = obj._file_reduce
return obj
@classmethod
def clear_cache(cls, *, only_keys=None):
if only_keys is not None:
for key in only_keys:
cls._weak_cache.pop(key, None)
cls._strong_cache.pop(key, None)
else:
cls._weak_cache.clear()
cls._strong_cache.clear()
@property
def key(self):
return self._key
def utcoffset(self, dt):
return self._find_trans(dt).utcoff
def dst(self, dt):
return self._find_trans(dt).dstoff
def tzname(self, dt):
return self._find_trans(dt).tzname
def fromutc(self, dt):
"""Convert from datetime in UTC to datetime in local time"""
if not isinstance(dt, datetime):
raise TypeError("fromutc() requires a datetime argument")
if dt.tzinfo is not self:
raise ValueError("dt.tzinfo is not self")
timestamp = self._get_local_timestamp(dt)
num_trans = len(self._trans_utc)
if num_trans >= 1 and timestamp < self._trans_utc[0]:
tti = self._tti_before
fold = 0
elif (
num_trans == 0 or timestamp > self._trans_utc[-1]
) and not isinstance(self._tz_after, _ttinfo):
tti, fold = self._tz_after.get_trans_info_fromutc(
timestamp, dt.year
)
elif num_trans == 0:
tti = self._tz_after
fold = 0
else:
idx = bisect.bisect_right(self._trans_utc, timestamp)
if num_trans > 1 and timestamp >= self._trans_utc[1]:
tti_prev, tti = self._ttinfos[idx - 2 : idx]
elif timestamp > self._trans_utc[-1]:
tti_prev = self._ttinfos[-1]
tti = self._tz_after
else:
tti_prev = self._tti_before
tti = self._ttinfos[0]
# Detect fold
shift = tti_prev.utcoff - tti.utcoff
fold = shift.total_seconds() > timestamp - self._trans_utc[idx - 1]
dt += tti.utcoff
if fold:
return dt.replace(fold=1)
else:
return dt
def _find_trans(self, dt):
if dt is None:
if self._fixed_offset:
return self._tz_after
else:
return _NO_TTINFO
ts = self._get_local_timestamp(dt)
lt = self._trans_local[dt.fold]
num_trans = len(lt)
if num_trans and ts < lt[0]:
return self._tti_before
elif not num_trans or ts > lt[-1]:
if isinstance(self._tz_after, _TZStr):
return self._tz_after.get_trans_info(ts, dt.year, dt.fold)
else:
return self._tz_after
else:
# idx is the transition that occurs after this timestamp, so we
# subtract off 1 to get the current ttinfo
idx = bisect.bisect_right(lt, ts) - 1
assert idx >= 0
return self._ttinfos[idx]
def _get_local_timestamp(self, dt):
return (
(dt.toordinal() - EPOCHORDINAL) * 86400
+ dt.hour * 3600
+ dt.minute * 60
+ dt.second
)
def __str__(self):
if self._key is not None:
return f"{self._key}"
else:
return repr(self)
def __repr__(self):
if self._key is not None:
return f"{self.__class__.__name__}(key={self._key!r})"
else:
return f"{self.__class__.__name__}.from_file({self._file_repr})"
def __reduce__(self):
return (self.__class__._unpickle, (self._key, self._from_cache))
def _file_reduce(self):
import pickle
raise pickle.PicklingError(
"Cannot pickle a ZoneInfo file created from a file stream."
)
@classmethod
def _unpickle(cls, key, from_cache):
if from_cache:
return cls(key)
else:
return cls.no_cache(key)
def _find_tzfile(self, key):
return _tzpath.find_tzfile(key)
def _load_file(self, fobj):
# Retrieve all the data as it exists in the zoneinfo file
trans_idx, trans_utc, utcoff, isdst, abbr, tz_str = _common.load_data(
fobj
)
# Infer the DST offsets (needed for .dst()) from the data
dstoff = self._utcoff_to_dstoff(trans_idx, utcoff, isdst)
# Convert all the transition times (UTC) into "seconds since 1970-01-01 local time"
trans_local = self._ts_to_local(trans_idx, trans_utc, utcoff)
# Construct `_ttinfo` objects for each transition in the file
_ttinfo_list = [
_ttinfo(
_load_timedelta(utcoffset), _load_timedelta(dstoffset), tzname
)
for utcoffset, dstoffset, tzname in zip(utcoff, dstoff, abbr)
]
self._trans_utc = trans_utc
self._trans_local = trans_local
self._ttinfos = [_ttinfo_list[idx] for idx in trans_idx]
# Find the first non-DST transition
for i in range(len(isdst)):
if not isdst[i]:
self._tti_before = _ttinfo_list[i]
break
else:
if self._ttinfos:
self._tti_before = self._ttinfos[0]
else:
self._tti_before = None
# Set the "fallback" time zone
if tz_str is not None and tz_str != b"":
self._tz_after = _parse_tz_str(tz_str.decode())
else:
if not self._ttinfos and not _ttinfo_list:
raise ValueError("No time zone information found.")
if self._ttinfos:
self._tz_after = self._ttinfos[-1]
else:
self._tz_after = _ttinfo_list[-1]
# Determine if this is a "fixed offset" zone, meaning that the output
# of the utcoffset, dst and tzname functions does not depend on the
# specific datetime passed.
#
# We make three simplifying assumptions here:
#
# 1. If _tz_after is not a _ttinfo, it has transitions that might
# actually occur (it is possible to construct TZ strings that
# specify STD and DST but no transitions ever occur, such as
# AAA0BBB,0/0,J365/25).
# 2. If _ttinfo_list contains more than one _ttinfo object, the objects
# represent different offsets.
# 3. _ttinfo_list contains no unused _ttinfos (in which case an
# otherwise fixed-offset zone with extra _ttinfos defined may
# appear to *not* be a fixed offset zone).
#
# Violations to these assumptions would be fairly exotic, and exotic
# zones should almost certainly not be used with datetime.time (the
# only thing that would be affected by this).
if len(_ttinfo_list) > 1 or not isinstance(self._tz_after, _ttinfo):
self._fixed_offset = False
elif not _ttinfo_list:
self._fixed_offset = True
else:
self._fixed_offset = _ttinfo_list[0] == self._tz_after
@staticmethod
def _utcoff_to_dstoff(trans_idx, utcoffsets, isdsts):
# Now we must transform our ttis and abbrs into `_ttinfo` objects,
# but there is an issue: .dst() must return a timedelta with the
# difference between utcoffset() and the "standard" offset, but
# the "base offset" and "DST offset" are not encoded in the file;
# we can infer what they are from the isdst flag, but it is not
# sufficient to to just look at the last standard offset, because
# occasionally countries will shift both DST offset and base offset.
typecnt = len(isdsts)
dstoffs = [0] * typecnt # Provisionally assign all to 0.
dst_cnt = sum(isdsts)
dst_found = 0
for i in range(1, len(trans_idx)):
if dst_cnt == dst_found:
break
idx = trans_idx[i]
dst = isdsts[idx]
# We're only going to look at daylight saving time
if not dst:
continue
# Skip any offsets that have already been assigned
if dstoffs[idx] != 0:
continue
dstoff = 0
utcoff = utcoffsets[idx]
comp_idx = trans_idx[i - 1]
if not isdsts[comp_idx]:
dstoff = utcoff - utcoffsets[comp_idx]
if not dstoff and idx < (typecnt - 1):
comp_idx = trans_idx[i + 1]
# If the following transition is also DST and we couldn't
# find the DST offset by this point, we're going ot have to
# skip it and hope this transition gets assigned later
if isdsts[comp_idx]:
continue
dstoff = utcoff - utcoffsets[comp_idx]
if dstoff:
dst_found += 1
dstoffs[idx] = dstoff
else:
# If we didn't find a valid value for a given index, we'll end up
# with dstoff = 0 for something where `isdst=1`. This is obviously
# wrong - one hour will be a much better guess than 0
for idx in range(typecnt):
if not dstoffs[idx] and isdsts[idx]:
dstoffs[idx] = 3600
return dstoffs
@staticmethod
def _ts_to_local(trans_idx, trans_list_utc, utcoffsets):
"""Generate number of seconds since 1970 *in the local time*.
This is necessary to easily find the transition times in local time"""
if not trans_list_utc:
return [[], []]
# Start with the timestamps and modify in-place
trans_list_wall = [list(trans_list_utc), list(trans_list_utc)]
if len(utcoffsets) > 1:
offset_0 = utcoffsets[0]
offset_1 = utcoffsets[trans_idx[0]]
if offset_1 > offset_0:
offset_1, offset_0 = offset_0, offset_1
else:
offset_0 = offset_1 = utcoffsets[0]
trans_list_wall[0][0] += offset_0
trans_list_wall[1][0] += offset_1
for i in range(1, len(trans_idx)):
offset_0 = utcoffsets[trans_idx[i - 1]]
offset_1 = utcoffsets[trans_idx[i]]
if offset_1 > offset_0:
offset_1, offset_0 = offset_0, offset_1
trans_list_wall[0][i] += offset_0
trans_list_wall[1][i] += offset_1
return trans_list_wall
class _ttinfo:
__slots__ = ["utcoff", "dstoff", "tzname"]
def __init__(self, utcoff, dstoff, tzname):
self.utcoff = utcoff
self.dstoff = dstoff
self.tzname = tzname
def __eq__(self, other):
return (
self.utcoff == other.utcoff
and self.dstoff == other.dstoff
and self.tzname == other.tzname
)
def __repr__(self): # pragma: nocover
return (
f"{self.__class__.__name__}"
+ f"({self.utcoff}, {self.dstoff}, {self.tzname})"
)
_NO_TTINFO = _ttinfo(None, None, None)
class _TZStr:
__slots__ = (
"std",
"dst",
"start",
"end",
"get_trans_info",
"get_trans_info_fromutc",
"dst_diff",
)
def __init__(
self, std_abbr, std_offset, dst_abbr, dst_offset, start=None, end=None
):
self.dst_diff = dst_offset - std_offset
std_offset = _load_timedelta(std_offset)
self.std = _ttinfo(
utcoff=std_offset, dstoff=_load_timedelta(0), tzname=std_abbr
)
self.start = start
self.end = end
dst_offset = _load_timedelta(dst_offset)
delta = _load_timedelta(self.dst_diff)
self.dst = _ttinfo(utcoff=dst_offset, dstoff=delta, tzname=dst_abbr)
# These are assertions because the constructor should only be called
# by functions that would fail before passing start or end
assert start is not None, "No transition start specified"
assert end is not None, "No transition end specified"
self.get_trans_info = self._get_trans_info
self.get_trans_info_fromutc = self._get_trans_info_fromutc
def transitions(self, year):
start = self.start.year_to_epoch(year)
end = self.end.year_to_epoch(year)
return start, end
def _get_trans_info(self, ts, year, fold):
"""Get the information about the current transition - tti"""
start, end = self.transitions(year)
# With fold = 0, the period (denominated in local time) with the
# smaller offset starts at the end of the gap and ends at the end of
# the fold; with fold = 1, it runs from the start of the gap to the
# beginning of the fold.
#
# So in order to determine the DST boundaries we need to know both
# the fold and whether DST is positive or negative (rare), and it
# turns out that this boils down to fold XOR is_positive.
if fold == (self.dst_diff >= 0):
end -= self.dst_diff
else:
start += self.dst_diff
if start < end:
isdst = start <= ts < end
else:
isdst = not (end <= ts < start)
return self.dst if isdst else self.std
def _get_trans_info_fromutc(self, ts, year):
start, end = self.transitions(year)
start -= self.std.utcoff.total_seconds()
end -= self.dst.utcoff.total_seconds()
if start < end:
isdst = start <= ts < end
else:
isdst = not (end <= ts < start)
# For positive DST, the ambiguous period is one dst_diff after the end
# of DST; for negative DST, the ambiguous period is one dst_diff before
# the start of DST.
if self.dst_diff > 0:
ambig_start = end
ambig_end = end + self.dst_diff
else:
ambig_start = start
ambig_end = start - self.dst_diff
fold = ambig_start <= ts < ambig_end
return (self.dst if isdst else self.std, fold)
def _post_epoch_days_before_year(year):
"""Get the number of days between 1970-01-01 and YEAR-01-01"""
y = year - 1
return y * 365 + y // 4 - y // 100 + y // 400 - EPOCHORDINAL
class _DayOffset:
__slots__ = ["d", "julian", "hour", "minute", "second"]
def __init__(self, d, julian, hour=2, minute=0, second=0):
if not (0 + julian) <= d <= 365:
min_day = 0 + julian
raise ValueError(f"d must be in [{min_day}, 365], not: {d}")
self.d = d
self.julian = julian
self.hour = hour
self.minute = minute
self.second = second
def year_to_epoch(self, year):
days_before_year = _post_epoch_days_before_year(year)
d = self.d
if self.julian and d >= 59 and calendar.isleap(year):
d += 1
epoch = (days_before_year + d) * 86400
epoch += self.hour * 3600 + self.minute * 60 + self.second
return epoch
class _CalendarOffset:
__slots__ = ["m", "w", "d", "hour", "minute", "second"]
_DAYS_BEFORE_MONTH = (
-1,
0,
31,
59,
90,
120,
151,
181,
212,
243,
273,
304,
334,
)
def __init__(self, m, w, d, hour=2, minute=0, second=0):
if not 0 < m <= 12:
raise ValueError("m must be in (0, 12]")
if not 0 < w <= 5:
raise ValueError("w must be in (0, 5]")
if not 0 <= d <= 6:
raise ValueError("d must be in [0, 6]")
self.m = m
self.w = w
self.d = d
self.hour = hour
self.minute = minute
self.second = second
@classmethod
def _ymd2ord(cls, year, month, day):
return (
_post_epoch_days_before_year(year)
+ cls._DAYS_BEFORE_MONTH[month]
+ (month > 2 and calendar.isleap(year))
+ day
)
# TODO: These are not actually epoch dates as they are expressed in local time
def year_to_epoch(self, year):
"""Calculates the datetime of the occurrence from the year"""
# We know year and month, we need to convert w, d into day of month
#
# Week 1 is the first week in which day `d` (where 0 = Sunday) appears.
# Week 5 represents the last occurrence of day `d`, so we need to know
# the range of the month.
first_day, days_in_month = calendar.monthrange(year, self.m)
# This equation seems magical, so I'll break it down:
# 1. calendar says 0 = Monday, POSIX says 0 = Sunday
# so we need first_day + 1 to get 1 = Monday -> 7 = Sunday,
# which is still equivalent because this math is mod 7
# 2. Get first day - desired day mod 7: -1 % 7 = 6, so we don't need
# to do anything to adjust negative numbers.
# 3. Add 1 because month days are a 1-based index.
month_day = (self.d - (first_day + 1)) % 7 + 1
# Now use a 0-based index version of `w` to calculate the w-th
# occurrence of `d`
month_day += (self.w - 1) * 7
# month_day will only be > days_in_month if w was 5, and `w` means
# "last occurrence of `d`", so now we just check if we over-shot the
# end of the month and if so knock off 1 week.
if month_day > days_in_month:
month_day -= 7
ordinal = self._ymd2ord(year, self.m, month_day)
epoch = ordinal * 86400
epoch += self.hour * 3600 + self.minute * 60 + self.second
return epoch
def _parse_tz_str(tz_str):
# The tz string has the format:
#
# std[offset[dst[offset],start[/time],end[/time]]]
#
# std and dst must be 3 or more characters long and must not contain
# a leading colon, embedded digits, commas, nor a plus or minus signs;
# The spaces between "std" and "offset" are only for display and are
# not actually present in the string.
#
# The format of the offset is ``[+|-]hh[:mm[:ss]]``
offset_str, *start_end_str = tz_str.split(",", 1)
# fmt: off
parser_re = re.compile(
r"(?P<std>[^<0-9:.+-]+|<[a-zA-Z0-9+\-]+>)" +
r"((?P<stdoff>[+-]?\d{1,2}(:\d{2}(:\d{2})?)?)" +
r"((?P<dst>[^0-9:.+-]+|<[a-zA-Z0-9+\-]+>)" +
r"((?P<dstoff>[+-]?\d{1,2}(:\d{2}(:\d{2})?)?))?" +
r")?" + # dst
r")?$" # stdoff
)
# fmt: on
m = parser_re.match(offset_str)
if m is None:
raise ValueError(f"{tz_str} is not a valid TZ string")
std_abbr = m.group("std")
dst_abbr = m.group("dst")
dst_offset = None
std_abbr = std_abbr.strip("<>")
if dst_abbr:
dst_abbr = dst_abbr.strip("<>")
std_offset = m.group("stdoff")
if std_offset:
try:
std_offset = _parse_tz_delta(std_offset)
except ValueError as e:
raise ValueError(f"Invalid STD offset in {tz_str}") from e
else:
std_offset = 0
if dst_abbr is not None:
dst_offset = m.group("dstoff")
if dst_offset:
try:
dst_offset = _parse_tz_delta(dst_offset)
except ValueError as e:
raise ValueError(f"Invalid DST offset in {tz_str}") from e
else:
dst_offset = std_offset + 3600
if not start_end_str:
raise ValueError(f"Missing transition rules: {tz_str}")
start_end_strs = start_end_str[0].split(",", 1)
try:
start, end = (_parse_dst_start_end(x) for x in start_end_strs)
except ValueError as e:
raise ValueError(f"Invalid TZ string: {tz_str}") from e
return _TZStr(std_abbr, std_offset, dst_abbr, dst_offset, start, end)
elif start_end_str:
raise ValueError(f"Transition rule present without DST: {tz_str}")
else:
# This is a static ttinfo, don't return _TZStr
return _ttinfo(
_load_timedelta(std_offset), _load_timedelta(0), std_abbr
)
def _parse_dst_start_end(dststr):
date, *time = dststr.split("/")
if date[0] == "M":
n_is_julian = False
m = re.match(r"M(\d{1,2})\.(\d).(\d)$", date)
if m is None:
raise ValueError(f"Invalid dst start/end date: {dststr}")
date_offset = tuple(map(int, m.groups()))
offset = _CalendarOffset(*date_offset)
else:
if date[0] == "J":
n_is_julian = True
date = date[1:]
else:
n_is_julian = False
doy = int(date)
offset = _DayOffset(doy, n_is_julian)
if time:
time_components = list(map(int, time[0].split(":")))
n_components = len(time_components)
if n_components < 3:
time_components.extend([0] * (3 - n_components))
offset.hour, offset.minute, offset.second = time_components
return offset
def _parse_tz_delta(tz_delta):
match = re.match(
r"(?P<sign>[+-])?(?P<h>\d{1,2})(:(?P<m>\d{2})(:(?P<s>\d{2}))?)?",
tz_delta,
)
# Anything passed to this function should already have hit an equivalent
# regular expression to find the section to parse.
assert match is not None, tz_delta
h, m, s = (
int(v) if v is not None else 0
for v in map(match.group, ("h", "m", "s"))
)
total = h * 3600 + m * 60 + s
if not -86400 < total < 86400:
raise ValueError(
"Offset must be strictly between -24h and +24h:" + tz_delta
)
# Yes, +5 maps to an offset of -5h
if match.group("sign") != "-":
total *= -1
return total

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from django.utils.version import get_version
VERSION = (4, 1, 0, "final", 0)
__version__ = get_version(VERSION)
def setup(set_prefix=True):
"""
Configure the settings (this happens as a side effect of accessing the
first setting), configure logging and populate the app registry.
Set the thread-local urlresolvers script prefix if `set_prefix` is True.
"""
from django.apps import apps
from django.conf import settings
from django.urls import set_script_prefix
from django.utils.log import configure_logging
configure_logging(settings.LOGGING_CONFIG, settings.LOGGING)
if set_prefix:
set_script_prefix(
"/" if settings.FORCE_SCRIPT_NAME is None else settings.FORCE_SCRIPT_NAME
)
apps.populate(settings.INSTALLED_APPS)

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"""
Invokes django-admin when the django module is run as a script.
Example: python -m django check
"""
from django.core import management
if __name__ == "__main__":
management.execute_from_command_line()

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