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This commit is contained in:
Colby Lipsett
2025-10-02 19:22:48 +01:00
parent b59e1dab99
commit 209c690413
2179 changed files with 340188 additions and 1 deletions
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2
app.py
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@@ -90,4 +90,4 @@ if __name__ == '__main__':
context.load_cert_chain('cert.pem', 'key.pem')
print("Starting Flask-SocketIO server on https://localhost:3000")
socketio.run(app, host='localhost', port=3000, ssl_context=context, debug=True)
socketio.run(app, host='0.0.0.0', port=3232, ssl_context=context, debug=True)

0
setup.sh Normal file → Executable file
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main.js → static/main.js
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styles.css → static/styles.css
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index.html → templates/index.html
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247
venv/bin/Activate.ps1 Normal file
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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 VIRTUAL_ENV_PROMPT altogether.
if (Test-Path -Path Env:VIRTUAL_ENV_PROMPT) {
Remove-Item -Path env:VIRTUAL_ENV_PROMPT
}
# 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 virtual 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
}
$env:VIRTUAL_ENV_PROMPT = $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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venv/bin/activate Normal file
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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
# Call hash to forget past commands. Without forgetting
# past commands the $PATH changes we made may not be respected
hash -r 2> /dev/null
if [ -n "${_OLD_VIRTUAL_PS1:-}" ] ; then
PS1="${_OLD_VIRTUAL_PS1:-}"
export PS1
unset _OLD_VIRTUAL_PS1
fi
unset VIRTUAL_ENV
unset VIRTUAL_ENV_PROMPT
if [ ! "${1:-}" = "nondestructive" ] ; then
# Self destruct!
unset -f deactivate
fi
}
# unset irrelevant variables
deactivate nondestructive
# on Windows, a path can contain colons and backslashes and has to be converted:
if [ "${OSTYPE:-}" = "cygwin" ] || [ "${OSTYPE:-}" = "msys" ] ; then
# transform D:\path\to\venv to /d/path/to/venv on MSYS
# and to /cygdrive/d/path/to/venv on Cygwin
export VIRTUAL_ENV=$(cygpath /home/colby/chatty/venv)
else
# use the path as-is
export VIRTUAL_ENV=/home/colby/chatty/venv
fi
_OLD_VIRTUAL_PATH="$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="${PS1:-}"
PS1='(venv) '"${PS1:-}"
export PS1
VIRTUAL_ENV_PROMPT='(venv) '
export VIRTUAL_ENV_PROMPT
fi
# Call hash to forget past commands. Without forgetting
# past commands the $PATH changes we made may not be respected
hash -r 2> /dev/null

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venv/bin/activate.csh Normal file
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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; unsetenv VIRTUAL_ENV_PROMPT; test "\!:*" != "nondestructive" && unalias deactivate'
# Unset irrelevant variables.
deactivate nondestructive
setenv VIRTUAL_ENV /home/colby/chatty/venv
set _OLD_VIRTUAL_PATH="$PATH"
setenv PATH "$VIRTUAL_ENV/"bin":$PATH"
set _OLD_VIRTUAL_PROMPT="$prompt"
if (! "$?VIRTUAL_ENV_DISABLE_PROMPT") then
set prompt = '(venv) '"$prompt"
setenv VIRTUAL_ENV_PROMPT '(venv) '
endif
alias pydoc python -m pydoc
rehash

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venv/bin/activate.fish Normal file
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# This file must be used with "source <venv>/bin/activate.fish" *from fish*
# (https://fishshell.com/). You cannot run it directly.
function deactivate -d "Exit virtual environment 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"
set -e _OLD_FISH_PROMPT_OVERRIDE
# prevents error when using nested fish instances (Issue #93858)
if functions -q _old_fish_prompt
functions -e fish_prompt
functions -c _old_fish_prompt fish_prompt
functions -e _old_fish_prompt
end
end
set -e VIRTUAL_ENV
set -e VIRTUAL_ENV_PROMPT
if test "$argv[1]" != "nondestructive"
# Self-destruct!
functions -e deactivate
end
end
# Unset irrelevant variables.
deactivate nondestructive
set -gx VIRTUAL_ENV /home/colby/chatty/venv
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
# Output the venv prompt; color taken from the blue of the Python logo.
printf "%s%s%s" (set_color 4B8BBE) '(venv) ' (set_color normal)
# Restore the return status of the previous command.
echo "exit $old_status" | .
# Output the original/"old" prompt.
_old_fish_prompt
end
set -gx _OLD_FISH_PROMPT_OVERRIDE "$VIRTUAL_ENV"
set -gx VIRTUAL_ENV_PROMPT '(venv) '
end

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venv/bin/flask Executable file
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#!/home/colby/chatty/venv/bin/python3
# -*- coding: utf-8 -*-
import re
import sys
from flask.cli import main
if __name__ == '__main__':
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
sys.exit(main())

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venv/bin/pip Executable file
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#!/home/colby/chatty/venv/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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venv/bin/pip3 Executable file
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#!/home/colby/chatty/venv/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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venv/bin/pip3.12 Executable file
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#!/home/colby/chatty/venv/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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venv/bin/python Symbolic link
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python3

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venv/bin/python3 Symbolic link
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/usr/bin/python3

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venv/bin/python3.12 Symbolic link
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python3

164
venv/include/site/python3.12/greenlet/greenlet.h Normal file
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/* -*- indent-tabs-mode: nil; tab-width: 4; -*- */
/* Greenlet object interface */
#ifndef Py_GREENLETOBJECT_H
#define Py_GREENLETOBJECT_H
#include <Python.h>
#ifdef __cplusplus
extern "C" {
#endif
/* This is deprecated and undocumented. It does not change. */
#define GREENLET_VERSION "1.0.0"
#ifndef GREENLET_MODULE
#define implementation_ptr_t void*
#endif
typedef struct _greenlet {
PyObject_HEAD
PyObject* weakreflist;
PyObject* dict;
implementation_ptr_t pimpl;
} PyGreenlet;
#define PyGreenlet_Check(op) (op && PyObject_TypeCheck(op, &PyGreenlet_Type))
/* C API functions */
/* Total number of symbols that are exported */
#define PyGreenlet_API_pointers 12
#define PyGreenlet_Type_NUM 0
#define PyExc_GreenletError_NUM 1
#define PyExc_GreenletExit_NUM 2
#define PyGreenlet_New_NUM 3
#define PyGreenlet_GetCurrent_NUM 4
#define PyGreenlet_Throw_NUM 5
#define PyGreenlet_Switch_NUM 6
#define PyGreenlet_SetParent_NUM 7
#define PyGreenlet_MAIN_NUM 8
#define PyGreenlet_STARTED_NUM 9
#define PyGreenlet_ACTIVE_NUM 10
#define PyGreenlet_GET_PARENT_NUM 11
#ifndef GREENLET_MODULE
/* This section is used by modules that uses the greenlet C API */
static void** _PyGreenlet_API = NULL;
# define PyGreenlet_Type \
(*(PyTypeObject*)_PyGreenlet_API[PyGreenlet_Type_NUM])
# define PyExc_GreenletError \
((PyObject*)_PyGreenlet_API[PyExc_GreenletError_NUM])
# define PyExc_GreenletExit \
((PyObject*)_PyGreenlet_API[PyExc_GreenletExit_NUM])
/*
* PyGreenlet_New(PyObject *args)
*
* greenlet.greenlet(run, parent=None)
*/
# define PyGreenlet_New \
(*(PyGreenlet * (*)(PyObject * run, PyGreenlet * parent)) \
_PyGreenlet_API[PyGreenlet_New_NUM])
/*
* PyGreenlet_GetCurrent(void)
*
* greenlet.getcurrent()
*/
# define PyGreenlet_GetCurrent \
(*(PyGreenlet * (*)(void)) _PyGreenlet_API[PyGreenlet_GetCurrent_NUM])
/*
* PyGreenlet_Throw(
* PyGreenlet *greenlet,
* PyObject *typ,
* PyObject *val,
* PyObject *tb)
*
* g.throw(...)
*/
# define PyGreenlet_Throw \
(*(PyObject * (*)(PyGreenlet * self, \
PyObject * typ, \
PyObject * val, \
PyObject * tb)) \
_PyGreenlet_API[PyGreenlet_Throw_NUM])
/*
* PyGreenlet_Switch(PyGreenlet *greenlet, PyObject *args)
*
* g.switch(*args, **kwargs)
*/
# define PyGreenlet_Switch \
(*(PyObject * \
(*)(PyGreenlet * greenlet, PyObject * args, PyObject * kwargs)) \
_PyGreenlet_API[PyGreenlet_Switch_NUM])
/*
* PyGreenlet_SetParent(PyObject *greenlet, PyObject *new_parent)
*
* g.parent = new_parent
*/
# define PyGreenlet_SetParent \
(*(int (*)(PyGreenlet * greenlet, PyGreenlet * nparent)) \
_PyGreenlet_API[PyGreenlet_SetParent_NUM])
/*
* PyGreenlet_GetParent(PyObject* greenlet)
*
* return greenlet.parent;
*
* This could return NULL even if there is no exception active.
* If it does not return NULL, you are responsible for decrementing the
* reference count.
*/
# define PyGreenlet_GetParent \
(*(PyGreenlet* (*)(PyGreenlet*)) \
_PyGreenlet_API[PyGreenlet_GET_PARENT_NUM])
/*
* deprecated, undocumented alias.
*/
# define PyGreenlet_GET_PARENT PyGreenlet_GetParent
# define PyGreenlet_MAIN \
(*(int (*)(PyGreenlet*)) \
_PyGreenlet_API[PyGreenlet_MAIN_NUM])
# define PyGreenlet_STARTED \
(*(int (*)(PyGreenlet*)) \
_PyGreenlet_API[PyGreenlet_STARTED_NUM])
# define PyGreenlet_ACTIVE \
(*(int (*)(PyGreenlet*)) \
_PyGreenlet_API[PyGreenlet_ACTIVE_NUM])
/* Macro that imports greenlet and initializes C API */
/* NOTE: This has actually moved to ``greenlet._greenlet._C_API``, but we
keep the older definition to be sure older code that might have a copy of
the header still works. */
# define PyGreenlet_Import() \
{ \
_PyGreenlet_API = (void**)PyCapsule_Import("greenlet._C_API", 0); \
}
#endif /* GREENLET_MODULE */
#ifdef __cplusplus
}
#endif
#endif /* !Py_GREENLETOBJECT_H */

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venv/lib/python3.12/site-packages/Flask_SocketIO-5.3.6.dist-info/INSTALLER Normal file
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pip

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venv/lib/python3.12/site-packages/Flask_SocketIO-5.3.6.dist-info/LICENSE Normal file
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The MIT License (MIT)
Copyright (c) 2014 Miguel Grinberg
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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venv/lib/python3.12/site-packages/Flask_SocketIO-5.3.6.dist-info/METADATA Normal file
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Metadata-Version: 2.1
Name: Flask-SocketIO
Version: 5.3.6
Summary: Socket.IO integration for Flask applications
Home-page: https://github.com/miguelgrinberg/flask-socketio
Author: Miguel Grinberg
Author-email: miguel.grinberg@gmail.com
Project-URL: Bug Tracker, https://github.com/miguelgrinberg/flask-socketio/issues
Classifier: Environment :: Web Environment
Classifier: Intended Audience :: Developers
Classifier: Programming Language :: Python :: 3
Classifier: License :: OSI Approved :: MIT License
Classifier: Operating System :: OS Independent
Requires-Python: >=3.6
Description-Content-Type: text/markdown
License-File: LICENSE
Requires-Dist: Flask >=0.9
Requires-Dist: python-socketio >=5.0.2
Provides-Extra: docs
Requires-Dist: sphinx ; extra == 'docs'
Flask-SocketIO
==============
[![Build status](https://github.com/miguelgrinberg/flask-socketio/workflows/build/badge.svg)](https://github.com/miguelgrinberg/Flask-SocketIO/actions) [![codecov](https://codecov.io/gh/miguelgrinberg/flask-socketio/branch/main/graph/badge.svg)](https://codecov.io/gh/miguelgrinberg/flask-socketio)
Socket.IO integration for Flask applications.
Sponsors
--------
The following organizations are funding this project:
![Socket.IO](https://images.opencollective.com/socketio/050e5eb/logo/64.png)<br>[Socket.IO](https://socket.io) | [Add your company here!](https://github.com/sponsors/miguelgrinberg)|
-|-
Many individual sponsors also support this project through small ongoing contributions. Why not [join them](https://github.com/sponsors/miguelgrinberg)?
Installation
------------
You can install this package as usual with pip:
pip install flask-socketio
Example
-------
```py
from flask import Flask, render_template
from flask_socketio import SocketIO, emit
app = Flask(__name__)
app.config['SECRET_KEY'] = 'secret!'
socketio = SocketIO(app)
@app.route('/')
def index():
return render_template('index.html')
@socketio.event
def my_event(message):
emit('my response', {'data': 'got it!'})
if __name__ == '__main__':
socketio.run(app)
```
Resources
---------
- [Tutorial](http://blog.miguelgrinberg.com/post/easy-websockets-with-flask-and-gevent)
- [Documentation](http://flask-socketio.readthedocs.io/en/latest/)
- [PyPI](https://pypi.python.org/pypi/Flask-SocketIO)
- [Change Log](https://github.com/miguelgrinberg/Flask-SocketIO/blob/main/CHANGES.md)
- Questions? See the [questions](https://stackoverflow.com/questions/tagged/flask-socketio) others have asked on Stack Overflow, or [ask](https://stackoverflow.com/questions/ask?tags=python+flask-socketio+python-socketio) your own question.

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Wheel-Version: 1.0
Generator: bdist_wheel (0.41.2)
Root-Is-Purelib: true
Tag: py3-none-any

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pip

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Mozilla Public License Version 2.0
==================================
Copyright 2009-2024 Joshua Bronson. All rights reserved.
1. Definitions
--------------
1.1. "Contributor"
means each individual or legal entity that creates, contributes to
the creation of, or owns Covered Software.
1.2. "Contributor Version"
means the combination of the Contributions of others (if any) used
by a Contributor and that particular Contributor's Contribution.
1.3. "Contribution"
means Covered Software of a particular Contributor.
1.4. "Covered Software"
means Source Code Form to which the initial Contributor has attached
the notice in Exhibit A, the Executable Form of such Source Code
Form, and Modifications of such Source Code Form, in each case
including portions thereof.
1.5. "Incompatible With Secondary Licenses"
means
(a) that the initial Contributor has attached the notice described
in Exhibit B to the Covered Software; or
(b) that the Covered Software was made available under the terms of
version 1.1 or earlier of the License, but not also under the
terms of a Secondary License.
1.6. "Executable Form"
means any form of the work other than Source Code Form.
1.7. "Larger Work"
means a work that combines Covered Software with other material, in
a separate file or files, that is not Covered Software.
1.8. "License"
means this document.
1.9. "Licensable"
means having the right to grant, to the maximum extent possible,
whether at the time of the initial grant or subsequently, any and
all of the rights conveyed by this License.
1.10. "Modifications"
means any of the following:
(a) any file in Source Code Form that results from an addition to,
deletion from, or modification of the contents of Covered
Software; or
(b) any new file in Source Code Form that contains any Covered
Software.
1.11. "Patent Claims" of a Contributor
means any patent claim(s), including without limitation, method,
process, and apparatus claims, in any patent Licensable by such
Contributor that would be infringed, but for the grant of the
License, by the making, using, selling, offering for sale, having
made, import, or transfer of either its Contributions or its
Contributor Version.
1.12. "Secondary License"
means either the GNU General Public License, Version 2.0, the GNU
Lesser General Public License, Version 2.1, the GNU Affero General
Public License, Version 3.0, or any later versions of those
licenses.
1.13. "Source Code Form"
means the form of the work preferred for making modifications.
1.14. "You" (or "Your")
means an individual or a legal entity exercising rights under this
License. For legal entities, "You" includes any entity that
controls, is controlled by, or is under common control with You. For
purposes of this definition, "control" means (a) the power, direct
or indirect, to cause the direction or management of such entity,
whether by contract or otherwise, or (b) ownership of more than
fifty percent (50%) of the outstanding shares or beneficial
ownership of such entity.
2. License Grants and Conditions
--------------------------------
2.1. Grants
Each Contributor hereby grants You a world-wide, royalty-free,
non-exclusive license:
(a) under intellectual property rights (other than patent or trademark)
Licensable by such Contributor to use, reproduce, make available,
modify, display, perform, distribute, and otherwise exploit its
Contributions, either on an unmodified basis, with Modifications, or
as part of a Larger Work; and
(b) under Patent Claims of such Contributor to make, use, sell, offer
for sale, have made, import, and otherwise transfer either its
Contributions or its Contributor Version.
2.2. Effective Date
The licenses granted in Section 2.1 with respect to any Contribution
become effective for each Contribution on the date the Contributor first
distributes such Contribution.
2.3. Limitations on Grant Scope
The licenses granted in this Section 2 are the only rights granted under
this License. No additional rights or licenses will be implied from the
distribution or licensing of Covered Software under this License.
Notwithstanding Section 2.1(b) above, no patent license is granted by a
Contributor:
(a) for any code that a Contributor has removed from Covered Software;
or
(b) for infringements caused by: (i) Your and any other third party's
modifications of Covered Software, or (ii) the combination of its
Contributions with other software (except as part of its Contributor
Version); or
(c) under Patent Claims infringed by Covered Software in the absence of
its Contributions.
This License does not grant any rights in the trademarks, service marks,
or logos of any Contributor (except as may be necessary to comply with
the notice requirements in Section 3.4).
2.4. Subsequent Licenses
No Contributor makes additional grants as a result of Your choice to
distribute the Covered Software under a subsequent version of this
License (see Section 10.2) or under the terms of a Secondary License (if
permitted under the terms of Section 3.3).
2.5. Representation
Each Contributor represents that the Contributor believes its
Contributions are its original creation(s) or it has sufficient rights
to grant the rights to its Contributions conveyed by this License.
2.6. Fair Use
This License is not intended to limit any rights You have under
applicable copyright doctrines of fair use, fair dealing, or other
equivalents.
2.7. Conditions
Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted
in Section 2.1.
3. Responsibilities
-------------------
3.1. Distribution of Source Form
All distribution of Covered Software in Source Code Form, including any
Modifications that You create or to which You contribute, must be under
the terms of this License. You must inform recipients that the Source
Code Form of the Covered Software is governed by the terms of this
License, and how they can obtain a copy of this License. You may not
attempt to alter or restrict the recipients' rights in the Source Code
Form.
3.2. Distribution of Executable Form
If You distribute Covered Software in Executable Form then:
(a) such Covered Software must also be made available in Source Code
Form, as described in Section 3.1, and You must inform recipients of
the Executable Form how they can obtain a copy of such Source Code
Form by reasonable means in a timely manner, at a charge no more
than the cost of distribution to the recipient; and
(b) You may distribute such Executable Form under the terms of this
License, or sublicense it under different terms, provided that the
license for the Executable Form does not attempt to limit or alter
the recipients' rights in the Source Code Form under this License.
3.3. Distribution of a Larger Work
You may create and distribute a Larger Work under terms of Your choice,
provided that You also comply with the requirements of this License for
the Covered Software. If the Larger Work is a combination of Covered
Software with a work governed by one or more Secondary Licenses, and the
Covered Software is not Incompatible With Secondary Licenses, this
License permits You to additionally distribute such Covered Software
under the terms of such Secondary License(s), so that the recipient of
the Larger Work may, at their option, further distribute the Covered
Software under the terms of either this License or such Secondary
License(s).
3.4. Notices
You may not remove or alter the substance of any license notices
(including copyright notices, patent notices, disclaimers of warranty,
or limitations of liability) contained within the Source Code Form of
the Covered Software, except that You may alter any license notices to
the extent required to remedy known factual inaccuracies.
3.5. Application of Additional Terms
You may choose to offer, and to charge a fee for, warranty, support,
indemnity or liability obligations to one or more recipients of Covered
Software. However, You may do so only on Your own behalf, and not on
behalf of any Contributor. You must make it absolutely clear that any
such warranty, support, indemnity, or liability obligation is offered by
You alone, and You hereby agree to indemnify every Contributor for any
liability incurred by such Contributor as a result of warranty, support,
indemnity or liability terms You offer. You may include additional
disclaimers of warranty and limitations of liability specific to any
jurisdiction.
4. Inability to Comply Due to Statute or Regulation
---------------------------------------------------
If it is impossible for You to comply with any of the terms of this
License with respect to some or all of the Covered Software due to
statute, judicial order, or regulation then You must: (a) comply with
the terms of this License to the maximum extent possible; and (b)
describe the limitations and the code they affect. Such description must
be placed in a text file included with all distributions of the Covered
Software under this License. Except to the extent prohibited by statute
or regulation, such description must be sufficiently detailed for a
recipient of ordinary skill to be able to understand it.
5. Termination
--------------
5.1. The rights granted under this License will terminate automatically
if You fail to comply with any of its terms. However, if You become
compliant, then the rights granted under this License from a particular
Contributor are reinstated (a) provisionally, unless and until such
Contributor explicitly and finally terminates Your grants, and (b) on an
ongoing basis, if such Contributor fails to notify You of the
non-compliance by some reasonable means prior to 60 days after You have
come back into compliance. Moreover, Your grants from a particular
Contributor are reinstated on an ongoing basis if such Contributor
notifies You of the non-compliance by some reasonable means, this is the
first time You have received notice of non-compliance with this License
from such Contributor, and You become compliant prior to 30 days after
Your receipt of the notice.
5.2. If You initiate litigation against any entity by asserting a patent
infringement claim (excluding declaratory judgment actions,
counter-claims, and cross-claims) alleging that a Contributor Version
directly or indirectly infringes any patent, then the rights granted to
You by any and all Contributors for the Covered Software under Section
2.1 of this License shall terminate.
5.3. In the event of termination under Sections 5.1 or 5.2 above, all
end user license agreements (excluding distributors and resellers) which
have been validly granted by You or Your distributors under this License
prior to termination shall survive termination.
************************************************************************
* *
* 6. Disclaimer of Warranty *
* ------------------------- *
* *
* Covered Software is provided under this License on an "as is" *
* basis, without warranty of any kind, either expressed, implied, or *
* statutory, including, without limitation, warranties that the *
* Covered Software is free of defects, merchantable, fit for a *
* particular purpose or non-infringing. The entire risk as to the *
* quality and performance of the Covered Software is with You. *
* Should any Covered Software prove defective in any respect, You *
* (not any Contributor) assume the cost of any necessary servicing, *
* repair, or correction. This disclaimer of warranty constitutes an *
* essential part of this License. No use of any Covered Software is *
* authorized under this License except under this disclaimer. *
* *
************************************************************************
************************************************************************
* *
* 7. Limitation of Liability *
* -------------------------- *
* *
* Under no circumstances and under no legal theory, whether tort *
* (including negligence), contract, or otherwise, shall any *
* Contributor, or anyone who distributes Covered Software as *
* permitted above, be liable to You for any direct, indirect, *
* special, incidental, or consequential damages of any character *
* including, without limitation, damages for lost profits, loss of *
* goodwill, work stoppage, computer failure or malfunction, or any *
* and all other commercial damages or losses, even if such party *
* shall have been informed of the possibility of such damages. This *
* limitation of liability shall not apply to liability for death or *
* personal injury resulting from such party's negligence to the *
* extent applicable law prohibits such limitation. Some *
* jurisdictions do not allow the exclusion or limitation of *
* incidental or consequential damages, so this exclusion and *
* limitation may not apply to You. *
* *
************************************************************************
8. Litigation
-------------
Any litigation relating to this License may be brought only in the
courts of a jurisdiction where the defendant maintains its principal
place of business and such litigation shall be governed by laws of that
jurisdiction, without reference to its conflict-of-law provisions.
Nothing in this Section shall prevent a party's ability to bring
cross-claims or counter-claims.
9. Miscellaneous
----------------
This License represents the complete agreement concerning the subject
matter hereof. If any provision of this License is held to be
unenforceable, such provision shall be reformed only to the extent
necessary to make it enforceable. Any law or regulation which provides
that the language of a contract shall be construed against the drafter
shall not be used to construe this License against a Contributor.
10. Versions of the License
---------------------------
10.1. New Versions
Mozilla Foundation is the license steward. Except as provided in Section
10.3, no one other than the license steward has the right to modify or
publish new versions of this License. Each version will be given a
distinguishing version number.
10.2. Effect of New Versions
You may distribute the Covered Software under the terms of the version
of the License under which You originally received the Covered Software,
or under the terms of any subsequent version published by the license
steward.
10.3. Modified Versions
If you create software not governed by this License, and you want to
create a new license for such software, you may create and use a
modified version of this License if you rename the license and remove
any references to the name of the license steward (except to note that
such modified license differs from this License).
10.4. Distributing Source Code Form that is Incompatible With Secondary
Licenses
If You choose to distribute Source Code Form that is Incompatible With
Secondary Licenses under the terms of this version of the License, the
notice described in Exhibit B of this License must be attached.
Exhibit A - Source Code Form License Notice
-------------------------------------------
This Source Code Form is subject to the terms of the Mozilla Public
License, v. 2.0. If a copy of the MPL was not distributed with this
file, You can obtain one at http://mozilla.org/MPL/2.0/.
If it is not possible or desirable to put the notice in a particular
file, then You may include the notice in a location (such as a LICENSE
file in a relevant directory) where a recipient would be likely to look
for such a notice.
You may add additional accurate notices of copyright ownership.
Exhibit B - "Incompatible With Secondary Licenses" Notice
---------------------------------------------------------
This Source Code Form is "Incompatible With Secondary Licenses", as
defined by the Mozilla Public License, v. 2.0.

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Metadata-Version: 2.1
Name: bidict
Version: 0.23.1
Summary: The bidirectional mapping library for Python.
Author-email: Joshua Bronson <jabronson@gmail.com>
License: MPL 2.0
Project-URL: Changelog, https://bidict.readthedocs.io/changelog.html
Project-URL: Documentation, https://bidict.readthedocs.io
Project-URL: Funding, https://bidict.readthedocs.io/#sponsoring
Project-URL: Repository, https://github.com/jab/bidict
Keywords: bidict,bimap,bidirectional,dict,dictionary,mapping,collections
Classifier: License :: OSI Approved :: Mozilla Public License 2.0 (MPL 2.0)
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python :: Implementation :: CPython
Classifier: Programming Language :: Python :: Implementation :: PyPy
Classifier: Typing :: Typed
Requires-Python: >=3.8
Description-Content-Type: text/x-rst
License-File: LICENSE
.. role:: doc
.. (Forward declaration for the "doc" role that Sphinx defines for interop with renderers that
are often used to show this doc and that are unaware of Sphinx (GitHub.com, PyPI.org, etc.).
Use :doc: rather than :ref: here for better interop as well.)
bidict
======
*The bidirectional mapping library for Python.*
Status
------
.. image:: https://img.shields.io/pypi/v/bidict.svg
:target: https://pypi.org/project/bidict
:alt: Latest release
.. image:: https://img.shields.io/readthedocs/bidict/main.svg
:target: https://bidict.readthedocs.io/en/main/
:alt: Documentation
.. image:: https://github.com/jab/bidict/actions/workflows/test.yml/badge.svg
:target: https://github.com/jab/bidict/actions/workflows/test.yml?query=branch%3Amain
:alt: GitHub Actions CI status
.. image:: https://img.shields.io/pypi/l/bidict.svg
:target: https://raw.githubusercontent.com/jab/bidict/main/LICENSE
:alt: License
.. image:: https://static.pepy.tech/badge/bidict
:target: https://pepy.tech/project/bidict
:alt: PyPI Downloads
.. image:: https://img.shields.io/badge/GitHub-sponsor-ff69b4
:target: https://github.com/sponsors/jab
:alt: Sponsor
Features
--------
- Mature: Depended on by
Google, Venmo, CERN, Baidu, Tencent,
and teams across the world since 2009
- Familiar, Pythonic APIs
that are carefully designed for
safety, simplicity, flexibility, and ergonomics
- Lightweight, with no runtime dependencies
outside Python's standard library
- Implemented in
concise, well-factored, fully type-hinted Python code
that is optimized for running efficiently
as well as for long-term maintenance and stability
(as well as `joy <#learning-from-bidict>`__)
- Extensively `documented <https://bidict.readthedocs.io>`__
- 100% test coverage
running continuously across all supported Python versions
(including property-based tests and benchmarks)
Installation
------------
``pip install bidict``
Quick Start
-----------
.. code:: python
>>> from bidict import bidict
>>> element_by_symbol = bidict({'H': 'hydrogen'})
>>> element_by_symbol['H']
'hydrogen'
>>> element_by_symbol.inverse['hydrogen']
'H'
For more usage documentation,
head to the :doc:`intro` [#fn-intro]_
and proceed from there.
Enterprise Support
------------------
Enterprise-level support for bidict can be obtained via the
`Tidelift subscription <https://tidelift.com/subscription/pkg/pypi-bidict?utm_source=pypi-bidict&utm_medium=referral&utm_campaign=readme>`__
or by `contacting me directly <mailto:jabronson@gmail.com>`__.
I have a US-based LLC set up for invoicing,
and I have 15+ years of professional experience
delivering software and support to companies successfully.
You can also sponsor my work through several platforms, including GitHub Sponsors.
See the `Sponsoring <#sponsoring>`__ section below for details,
including rationale and examples of companies
supporting the open source projects they depend on.
Voluntary Community Support
---------------------------
Please search through already-asked questions and answers
in `GitHub Discussions <https://github.com/jab/bidict/discussions>`__
and the `issue tracker <https://github.com/jab/bidict/issues?q=is%3Aissue>`__
in case your question has already been addressed.
Otherwise, please feel free to
`start a new discussion <https://github.com/jab/bidict/discussions>`__
or `create a new issue <https://github.com/jab/bidict/issues/new>`__ on GitHub
for voluntary community support.
Notice of Usage
---------------
If you use bidict,
and especially if your usage or your organization is significant in some way,
please let me know in any of the following ways:
- `star bidict on GitHub <https://github.com/jab/bidict>`__
- post in `GitHub Discussions <https://github.com/jab/bidict/discussions>`__
- `email me <mailto:jabronson@gmail.com>`__
Changelog
---------
For bidict release notes, see the :doc:`changelog`. [#fn-changelog]_
Release Notifications
---------------------
.. duplicated in CHANGELOG.rst:
(Would use `.. include::` but GitHub's renderer doesn't support it.)
Watch `bidict releases on GitHub <https://github.com/jab/bidict/releases>`__
to be notified when new versions of bidict are published.
Click the "Watch" dropdown, choose "Custom", and then choose "Releases".
Learning from bidict
--------------------
One of the best things about bidict
is that it touches a surprising number of
interesting Python corners,
especially given its small size and scope.
Check out :doc:`learning-from-bidict` [#fn-learning]_
if you're interested in learning more.
Contributing
------------
I have been bidict's sole maintainer
and `active contributor <https://github.com/jab/bidict/graphs/contributors>`__
since I started the project ~15 years ago.
Your help would be most welcome!
See the :doc:`contributors-guide` [#fn-contributing]_
for more information.
Sponsoring
----------
.. duplicated in CONTRIBUTING.rst
(Would use `.. include::` but GitHub's renderer doesn't support it.)
.. image:: https://img.shields.io/badge/GitHub-sponsor-ff69b4
:target: https://github.com/sponsors/jab
:alt: Sponsor through GitHub
Bidict is the product of thousands of hours of my unpaid work
over the 15+ years that I've been the sole maintainer.
If bidict has helped you or your company accomplish your work,
please sponsor my work through one of the following,
and/or ask your company to do the same:
- `GitHub <https://github.com/sponsors/jab>`__
- `PayPal <https://www.paypal.com/cgi-bin/webscr?cmd=_xclick&business=jabronson%40gmail%2ecom&lc=US&item_name=Sponsor%20bidict>`__
- `Tidelift <https://tidelift.com>`__
- `thanks.dev <https://thanks.dev>`__
- `Gumroad <https://gumroad.com/l/bidict>`__
- `a support engagement with my LLC <#enterprise-support>`__
If you're not sure which to use, GitHub is an easy option,
especially if you already have a GitHub account.
Just choose a monthly or one-time amount, and GitHub handles everything else.
Your bidict sponsorship on GitHub will automatically go
on the same regular bill as any other GitHub charges you pay for.
PayPal is another easy option for one-time contributions.
See the following for rationale and examples of companies
supporting the open source projects they depend on
in this manner:
- `<https://engineering.atspotify.com/2022/04/announcing-the-spotify-foss-fund/>`__
- `<https://blog.sentry.io/2021/10/21/we-just-gave-154-999-dollars-and-89-cents-to-open-source-maintainers>`__
- `<https://engineering.indeedblog.com/blog/2019/07/foss-fund-six-months-in/>`__
.. - `<https://sethmlarson.dev/blog/people-in-your-software-supply-chain>`__
.. - `<https://www.cognitect.com/blog/supporting-open-source-developers>`__
.. - `<https://vorpus.org/blog/the-unreasonable-effectiveness-of-investment-in-open-source-infrastructure/>`__
Finding Documentation
---------------------
If you're viewing this on `<https://bidict.readthedocs.io>`__,
note that multiple versions of the documentation are available,
and you can choose a different version using the popup menu at the bottom-right.
Please make sure you're viewing the version of the documentation
that corresponds to the version of bidict you'd like to use.
If you're viewing this on GitHub, PyPI, or some other place
that can't render and link this documentation properly
and are seeing broken links,
try these alternate links instead:
.. [#fn-intro] `<https://bidict.readthedocs.io/intro.html>`__ | `<docs/intro.rst>`__
.. [#fn-changelog] `<https://bidict.readthedocs.io/changelog.html>`__ | `<CHANGELOG.rst>`__
.. [#fn-learning] `<https://bidict.readthedocs.io/learning-from-bidict.html>`__ | `<docs/learning-from-bidict.rst>`__
.. [#fn-contributing] `<https://bidict.readthedocs.io/contributors-guide.html>`__ | `<CONTRIBUTING.rst>`__

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# Copyright 2009-2024 Joshua Bronson. All rights reserved.
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
# ============================================================================
# * Welcome to the bidict source code *
# ============================================================================
# Reading through the code? You'll find a "Code review nav" comment like the one
# below at the top and bottom of the key source files. Follow these cues to take
# a path through the code that's optimized for familiarizing yourself with it.
#
# If you're not reading this on https://github.com/jab/bidict already, go there
# to ensure you have the latest version of the code. While there, you can also
# star the project, watch it for updates, fork the code, and submit an issue or
# pull request with any proposed changes. More information can be found linked
# from README.rst, which is also shown on https://github.com/jab/bidict.
# * Code review nav *
# ============================================================================
# Current: __init__.py Next: _abc.py →
# ============================================================================
"""The bidirectional mapping library for Python.
----
bidict by example:
.. code-block:: python
>>> from bidict import bidict
>>> element_by_symbol = bidict({'H': 'hydrogen'})
>>> element_by_symbol['H']
'hydrogen'
>>> element_by_symbol.inverse['hydrogen']
'H'
Please see https://github.com/jab/bidict for the most up-to-date code and
https://bidict.readthedocs.io for the most up-to-date documentation
if you are reading this elsewhere.
----
.. :copyright: (c) 2009-2024 Joshua Bronson.
.. :license: MPLv2. See LICENSE for details.
"""
# Use private aliases to not re-export these publicly (for Sphinx automodule with imported-members).
from __future__ import annotations as _annotations
from contextlib import suppress as _suppress
from ._abc import BidirectionalMapping as BidirectionalMapping
from ._abc import MutableBidirectionalMapping as MutableBidirectionalMapping
from ._base import BidictBase as BidictBase
from ._base import BidictKeysView as BidictKeysView
from ._base import GeneratedBidictInverse as GeneratedBidictInverse
from ._bidict import MutableBidict as MutableBidict
from ._bidict import bidict as bidict
from ._dup import DROP_NEW as DROP_NEW
from ._dup import DROP_OLD as DROP_OLD
from ._dup import ON_DUP_DEFAULT as ON_DUP_DEFAULT
from ._dup import ON_DUP_DROP_OLD as ON_DUP_DROP_OLD
from ._dup import ON_DUP_RAISE as ON_DUP_RAISE
from ._dup import RAISE as RAISE
from ._dup import OnDup as OnDup
from ._dup import OnDupAction as OnDupAction
from ._exc import BidictException as BidictException
from ._exc import DuplicationError as DuplicationError
from ._exc import KeyAndValueDuplicationError as KeyAndValueDuplicationError
from ._exc import KeyDuplicationError as KeyDuplicationError
from ._exc import ValueDuplicationError as ValueDuplicationError
from ._frozen import frozenbidict as frozenbidict
from ._iter import inverted as inverted
from ._orderedbase import OrderedBidictBase as OrderedBidictBase
from ._orderedbidict import OrderedBidict as OrderedBidict
from .metadata import __author__ as __author__
from .metadata import __copyright__ as __copyright__
from .metadata import __description__ as __description__
from .metadata import __license__ as __license__
from .metadata import __url__ as __url__
from .metadata import __version__ as __version__
# Set __module__ of re-exported classes to the 'bidict' top-level module, so that e.g.
# 'bidict.bidict' shows up as 'bidict.bidict` rather than 'bidict._bidict.bidict'.
for _obj in tuple(locals().values()): # pragma: no cover
if not getattr(_obj, '__module__', '').startswith('bidict.'):
continue
with _suppress(AttributeError):
_obj.__module__ = 'bidict'
# * Code review nav *
# ============================================================================
# Current: __init__.py Next: _abc.py →
# ============================================================================

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# Copyright 2009-2024 Joshua Bronson. All rights reserved.
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
# * Code review nav *
# (see comments in __init__.py)
# ============================================================================
# ← Prev: __init__.py Current: _abc.py Next: _base.py →
# ============================================================================
"""Provide the :class:`BidirectionalMapping` abstract base class."""
from __future__ import annotations
import typing as t
from abc import abstractmethod
from ._typing import KT
from ._typing import VT
class BidirectionalMapping(t.Mapping[KT, VT]):
"""Abstract base class for bidirectional mapping types.
Extends :class:`collections.abc.Mapping` primarily by adding the
(abstract) :attr:`inverse` property,
which implementers of :class:`BidirectionalMapping`
should override to return a reference to the inverse
:class:`BidirectionalMapping` instance.
"""
__slots__ = ()
@property
@abstractmethod
def inverse(self) -> BidirectionalMapping[VT, KT]:
"""The inverse of this bidirectional mapping instance.
*See also* :attr:`bidict.BidictBase.inverse`, :attr:`bidict.BidictBase.inv`
:raises NotImplementedError: Meant to be overridden in subclasses.
"""
# The @abstractmethod decorator prevents subclasses from being instantiated unless they
# override this method. But an overriding implementation may merely return super().inverse,
# in which case this implementation is used. Raise NotImplementedError to indicate that
# subclasses must actually provide their own implementation.
raise NotImplementedError
def __inverted__(self) -> t.Iterator[tuple[VT, KT]]:
"""Get an iterator over the items in :attr:`inverse`.
This is functionally equivalent to iterating over the items in the
forward mapping and inverting each one on the fly, but this provides a
more efficient implementation: Assuming the already-inverted items
are stored in :attr:`inverse`, just return an iterator over them directly.
Providing this default implementation enables external functions,
particularly :func:`~bidict.inverted`, to use this optimized
implementation when available, instead of having to invert on the fly.
*See also* :func:`bidict.inverted`
"""
return iter(self.inverse.items())
class MutableBidirectionalMapping(BidirectionalMapping[KT, VT], t.MutableMapping[KT, VT]):
"""Abstract base class for mutable bidirectional mapping types."""
__slots__ = ()
# * Code review nav *
# ============================================================================
# ← Prev: __init__.py Current: _abc.py Next: _base.py →
# ============================================================================

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# Copyright 2009-2024 Joshua Bronson. All rights reserved.
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
# * Code review nav *
# (see comments in __init__.py)
# ============================================================================
# ← Prev: _abc.py Current: _base.py Next: _frozen.py →
# ============================================================================
"""Provide :class:`BidictBase`."""
from __future__ import annotations
import typing as t
import weakref
from itertools import starmap
from operator import eq
from types import MappingProxyType
from ._abc import BidirectionalMapping
from ._dup import DROP_NEW
from ._dup import DROP_OLD
from ._dup import ON_DUP_DEFAULT
from ._dup import RAISE
from ._dup import OnDup
from ._exc import DuplicationError
from ._exc import KeyAndValueDuplicationError
from ._exc import KeyDuplicationError
from ._exc import ValueDuplicationError
from ._iter import inverted
from ._iter import iteritems
from ._typing import KT
from ._typing import MISSING
from ._typing import OKT
from ._typing import OVT
from ._typing import VT
from ._typing import Maplike
from ._typing import MapOrItems
OldKV = t.Tuple[OKT[KT], OVT[VT]]
DedupResult = t.Optional[OldKV[KT, VT]]
Unwrites = t.List[t.Tuple[t.Any, ...]]
BT = t.TypeVar('BT', bound='BidictBase[t.Any, t.Any]')
class BidictKeysView(t.KeysView[KT], t.ValuesView[KT]):
"""Since the keys of a bidict are the values of its inverse (and vice versa),
the :class:`~collections.abc.ValuesView` result of calling *bi.values()*
is also a :class:`~collections.abc.KeysView` of *bi.inverse*.
"""
class BidictBase(BidirectionalMapping[KT, VT]):
"""Base class implementing :class:`BidirectionalMapping`."""
#: The default :class:`~bidict.OnDup`
#: that governs behavior when a provided item
#: duplicates the key or value of other item(s).
#:
#: *See also*
#: :ref:`basic-usage:Values Must Be Unique` (https://bidict.rtfd.io/basic-usage.html#values-must-be-unique),
#: :doc:`extending` (https://bidict.rtfd.io/extending.html)
on_dup = ON_DUP_DEFAULT
_fwdm: t.MutableMapping[KT, VT] #: the backing forward mapping (*key* → *val*)
_invm: t.MutableMapping[VT, KT] #: the backing inverse mapping (*val* → *key*)
# Use Any rather than KT/VT in the following to avoid "ClassVar cannot contain type variables" errors:
_fwdm_cls: t.ClassVar[type[t.MutableMapping[t.Any, t.Any]]] = dict #: class of the backing forward mapping
_invm_cls: t.ClassVar[type[t.MutableMapping[t.Any, t.Any]]] = dict #: class of the backing inverse mapping
#: The class of the inverse bidict instance.
_inv_cls: t.ClassVar[type[BidictBase[t.Any, t.Any]]]
def __init_subclass__(cls) -> None:
super().__init_subclass__()
cls._init_class()
@classmethod
def _init_class(cls) -> None:
cls._ensure_inv_cls()
cls._set_reversed()
__reversed__: t.ClassVar[t.Any]
@classmethod
def _set_reversed(cls) -> None:
"""Set __reversed__ for subclasses that do not set it explicitly
according to whether backing mappings are reversible.
"""
if cls is not BidictBase:
resolved = cls.__reversed__
overridden = resolved is not BidictBase.__reversed__
if overridden: # E.g. OrderedBidictBase, OrderedBidict
return
backing_reversible = all(issubclass(i, t.Reversible) for i in (cls._fwdm_cls, cls._invm_cls))
cls.__reversed__ = _fwdm_reversed if backing_reversible else None
@classmethod
def _ensure_inv_cls(cls) -> None:
"""Ensure :attr:`_inv_cls` is set, computing it dynamically if necessary.
All subclasses provided in :mod:`bidict` are their own inverse classes,
i.e., their backing forward and inverse mappings are both the same type,
but users may define subclasses where this is not the case.
This method ensures that the inverse class is computed correctly regardless.
See: :ref:`extending:Dynamic Inverse Class Generation`
(https://bidict.rtfd.io/extending.html#dynamic-inverse-class-generation)
"""
# This _ensure_inv_cls() method is (indirectly) corecursive with _make_inv_cls() below
# in the case that we need to dynamically generate the inverse class:
# 1. _ensure_inv_cls() calls cls._make_inv_cls()
# 2. cls._make_inv_cls() calls type(..., (cls, ...), ...) to dynamically generate inv_cls
# 3. Our __init_subclass__ hook (see above) is automatically called on inv_cls
# 4. inv_cls.__init_subclass__() calls inv_cls._ensure_inv_cls()
# 5. inv_cls._ensure_inv_cls() resolves to this implementation
# (inv_cls deliberately does not override this), so we're back where we started.
# But since the _make_inv_cls() call will have set inv_cls.__dict__._inv_cls,
# just check if it's already set before calling _make_inv_cls() to prevent infinite recursion.
if getattr(cls, '__dict__', {}).get('_inv_cls'): # Don't assume cls.__dict__ (e.g. mypyc native class)
return
cls._inv_cls = cls._make_inv_cls()
@classmethod
def _make_inv_cls(cls: type[BT]) -> type[BT]:
diff = cls._inv_cls_dict_diff()
cls_is_own_inv = all(getattr(cls, k, MISSING) == v for (k, v) in diff.items())
if cls_is_own_inv:
return cls
# Suppress auto-calculation of _inv_cls's _inv_cls since we know it already.
# Works with the guard in BidictBase._ensure_inv_cls() to prevent infinite recursion.
diff['_inv_cls'] = cls
inv_cls = type(f'{cls.__name__}Inv', (cls, GeneratedBidictInverse), diff)
inv_cls.__module__ = cls.__module__
return t.cast(t.Type[BT], inv_cls)
@classmethod
def _inv_cls_dict_diff(cls) -> dict[str, t.Any]:
return {
'_fwdm_cls': cls._invm_cls,
'_invm_cls': cls._fwdm_cls,
}
def __init__(self, arg: MapOrItems[KT, VT] = (), /, **kw: VT) -> None:
"""Make a new bidirectional mapping.
The signature behaves like that of :class:`dict`.
ktems passed via positional arg are processed first,
followed by any items passed via keyword argument.
Any duplication encountered along the way
is handled as per :attr:`on_dup`.
"""
self._fwdm = self._fwdm_cls()
self._invm = self._invm_cls()
self._update(arg, kw, rollback=False)
# If Python ever adds support for higher-kinded types, `inverse` could use them, e.g.
# def inverse(self: BT[KT, VT]) -> BT[VT, KT]:
# Ref: https://github.com/python/typing/issues/548#issuecomment-621571821
@property
def inverse(self) -> BidictBase[VT, KT]:
"""The inverse of this bidirectional mapping instance."""
# When `bi.inverse` is called for the first time, this method
# computes the inverse instance, stores it for subsequent use, and then
# returns it. It also stores a reference on `bi.inverse` back to `bi`,
# but uses a weakref to avoid creating a reference cycle. Strong references
# to inverse instances are stored in ._inv, and weak references are stored
# in ._invweak.
# First check if a strong reference is already stored.
inv: BidictBase[VT, KT] | None = getattr(self, '_inv', None)
if inv is not None:
return inv
# Next check if a weak reference is already stored.
invweak = getattr(self, '_invweak', None)
if invweak is not None:
inv = invweak() # Try to resolve a strong reference and return it.
if inv is not None:
return inv
# No luck. Compute the inverse reference and store it for subsequent use.
inv = self._make_inverse()
self._inv: BidictBase[VT, KT] | None = inv
self._invweak: weakref.ReferenceType[BidictBase[VT, KT]] | None = None
# Also store a weak reference back to `instance` on its inverse instance, so that
# the second `.inverse` access in `bi.inverse.inverse` hits the cached weakref.
inv._inv = None
inv._invweak = weakref.ref(self)
# In e.g. `bidict().inverse.inverse`, this design ensures that a strong reference
# back to the original instance is retained before its refcount drops to zero,
# avoiding an unintended potential deallocation.
return inv
def _make_inverse(self) -> BidictBase[VT, KT]:
inv: BidictBase[VT, KT] = self._inv_cls()
inv._fwdm = self._invm
inv._invm = self._fwdm
return inv
@property
def inv(self) -> BidictBase[VT, KT]:
"""Alias for :attr:`inverse`."""
return self.inverse
def __repr__(self) -> str:
"""See :func:`repr`."""
clsname = self.__class__.__name__
items = dict(self.items()) if self else ''
return f'{clsname}({items})'
def values(self) -> BidictKeysView[VT]:
"""A set-like object providing a view on the contained values.
Since the values of a bidict are equivalent to the keys of its inverse,
this method returns a set-like object for this bidict's values
rather than just a collections.abc.ValuesView.
This object supports set operations like union and difference,
and constant- rather than linear-time containment checks,
and is no more expensive to provide than the less capable
collections.abc.ValuesView would be.
See :meth:`keys` for more information.
"""
return t.cast(BidictKeysView[VT], self.inverse.keys())
def keys(self) -> t.KeysView[KT]:
"""A set-like object providing a view on the contained keys.
When *b._fwdm* is a :class:`dict`, *b.keys()* returns a
*dict_keys* object that behaves exactly the same as
*collections.abc.KeysView(b)*, except for
- offering better performance
- being reversible on Python 3.8+
- having a .mapping attribute in Python 3.10+
that exposes a mappingproxy to *b._fwdm*.
"""
fwdm, fwdm_cls = self._fwdm, self._fwdm_cls
return fwdm.keys() if fwdm_cls is dict else BidictKeysView(self)
def items(self) -> t.ItemsView[KT, VT]:
"""A set-like object providing a view on the contained items.
When *b._fwdm* is a :class:`dict`, *b.items()* returns a
*dict_items* object that behaves exactly the same as
*collections.abc.ItemsView(b)*, except for:
- offering better performance
- being reversible on Python 3.8+
- having a .mapping attribute in Python 3.10+
that exposes a mappingproxy to *b._fwdm*.
"""
return self._fwdm.items() if self._fwdm_cls is dict else super().items()
# The inherited collections.abc.Mapping.__contains__() method is implemented by doing a `try`
# `except KeyError` around `self[key]`. The following implementation is much faster,
# especially in the missing case.
def __contains__(self, key: t.Any) -> bool:
"""True if the mapping contains the specified key, else False."""
return key in self._fwdm
# The inherited collections.abc.Mapping.__eq__() method is implemented in terms of an inefficient
# `dict(self.items()) == dict(other.items())` comparison, so override it with a
# more efficient implementation.
def __eq__(self, other: object) -> bool:
"""*x.__eq__(other)　⟺　x == other*
Equivalent to *dict(x.items()) == dict(other.items())*
but more efficient.
Note that :meth:`bidict's __eq__() <bidict.BidictBase.__eq__>` implementation
is inherited by subclasses,
in particular by the ordered bidict subclasses,
so even with ordered bidicts,
:ref:`== comparison is order-insensitive <eq-order-insensitive>`
(https://bidict.rtfd.io/other-bidict-types.html#eq-is-order-insensitive).
*See also* :meth:`equals_order_sensitive`
"""
if isinstance(other, t.Mapping):
return self._fwdm.items() == other.items()
# Ref: https://docs.python.org/3/library/constants.html#NotImplemented
return NotImplemented
def equals_order_sensitive(self, other: object) -> bool:
"""Order-sensitive equality check.
*See also* :ref:`eq-order-insensitive`
(https://bidict.rtfd.io/other-bidict-types.html#eq-is-order-insensitive)
"""
if not isinstance(other, t.Mapping) or len(self) != len(other):
return False
return all(starmap(eq, zip(self.items(), other.items())))
def _dedup(self, key: KT, val: VT, on_dup: OnDup) -> DedupResult[KT, VT]:
"""Check *key* and *val* for any duplication in self.
Handle any duplication as per the passed in *on_dup*.
If (key, val) is already present, return None
since writing (key, val) would be a no-op.
If duplication is found and the corresponding :class:`~bidict.OnDupAction` is
:attr:`~bidict.DROP_NEW`, return None.
If duplication is found and the corresponding :class:`~bidict.OnDupAction` is
:attr:`~bidict.RAISE`, raise the appropriate exception.
If duplication is found and the corresponding :class:`~bidict.OnDupAction` is
:attr:`~bidict.DROP_OLD`, or if no duplication is found,
return *(oldkey, oldval)*.
"""
fwdm, invm = self._fwdm, self._invm
oldval: OVT[VT] = fwdm.get(key, MISSING)
oldkey: OKT[KT] = invm.get(val, MISSING)
isdupkey, isdupval = oldval is not MISSING, oldkey is not MISSING
if isdupkey and isdupval:
if key == oldkey:
assert val == oldval
# (key, val) duplicates an existing item -> no-op.
return None
# key and val each duplicate a different existing item.
if on_dup.val is RAISE:
raise KeyAndValueDuplicationError(key, val)
if on_dup.val is DROP_NEW:
return None
assert on_dup.val is DROP_OLD
# Fall through to the return statement on the last line.
elif isdupkey:
if on_dup.key is RAISE:
raise KeyDuplicationError(key)
if on_dup.key is DROP_NEW:
return None
assert on_dup.key is DROP_OLD
# Fall through to the return statement on the last line.
elif isdupval:
if on_dup.val is RAISE:
raise ValueDuplicationError(val)
if on_dup.val is DROP_NEW:
return None
assert on_dup.val is DROP_OLD
# Fall through to the return statement on the last line.
# else neither isdupkey nor isdupval.
return oldkey, oldval
def _write(self, newkey: KT, newval: VT, oldkey: OKT[KT], oldval: OVT[VT], unwrites: Unwrites | None) -> None:
"""Insert (newkey, newval), extending *unwrites* with associated inverse operations if provided.
*oldkey* and *oldval* are as returned by :meth:`_dedup`.
If *unwrites* is not None, it is extended with the inverse operations necessary to undo the write.
This design allows :meth:`_update` to roll back a partially applied update that fails part-way through
when necessary.
This design also allows subclasses that require additional operations to easily extend this implementation.
For example, :class:`bidict.OrderedBidictBase` calls this inherited implementation, and then extends *unwrites*
with additional operations needed to keep its internal linked list nodes consistent with its items' order
as changes are made.
"""
fwdm, invm = self._fwdm, self._invm
fwdm_set, invm_set = fwdm.__setitem__, invm.__setitem__
fwdm_del, invm_del = fwdm.__delitem__, invm.__delitem__
# Always perform the following writes regardless of duplication.
fwdm_set(newkey, newval)
invm_set(newval, newkey)
if oldval is MISSING and oldkey is MISSING: # no key or value duplication
# {0: 1, 2: 3} | {4: 5} => {0: 1, 2: 3, 4: 5}
if unwrites is not None:
unwrites.extend((
(fwdm_del, newkey),
(invm_del, newval),
))
elif oldval is not MISSING and oldkey is not MISSING: # key and value duplication across two different items
# {0: 1, 2: 3} | {0: 3} => {0: 3}
fwdm_del(oldkey)
invm_del(oldval)
if unwrites is not None:
unwrites.extend((
(fwdm_set, newkey, oldval),
(invm_set, oldval, newkey),
(fwdm_set, oldkey, newval),
(invm_set, newval, oldkey),
))
elif oldval is not MISSING: # just key duplication
# {0: 1, 2: 3} | {2: 4} => {0: 1, 2: 4}
invm_del(oldval)
if unwrites is not None:
unwrites.extend((
(fwdm_set, newkey, oldval),
(invm_set, oldval, newkey),
(invm_del, newval),
))
else:
assert oldkey is not MISSING # just value duplication
# {0: 1, 2: 3} | {4: 3} => {0: 1, 4: 3}
fwdm_del(oldkey)
if unwrites is not None:
unwrites.extend((
(fwdm_set, oldkey, newval),
(invm_set, newval, oldkey),
(fwdm_del, newkey),
))
def _update(
self,
arg: MapOrItems[KT, VT],
kw: t.Mapping[str, VT] = MappingProxyType({}),
*,
rollback: bool | None = None,
on_dup: OnDup | None = None,
) -> None:
"""Update with the items from *arg* and *kw*, maybe failing and rolling back as per *on_dup* and *rollback*."""
# Note: We must process input in a single pass, since arg may be a generator.
if not isinstance(arg, (t.Iterable, Maplike)):
raise TypeError(f"'{arg.__class__.__name__}' object is not iterable")
if not arg and not kw:
return
if on_dup is None:
on_dup = self.on_dup
if rollback is None:
rollback = RAISE in on_dup
# Fast path when we're empty and updating only from another bidict (i.e. no dup vals in new items).
if not self and not kw and isinstance(arg, BidictBase):
self._init_from(arg)
return
# Fast path when we're adding more items than we contain already and rollback is enabled:
# Update a copy of self with rollback disabled. Fail if that fails, otherwise become the copy.
if rollback and isinstance(arg, t.Sized) and len(arg) + len(kw) > len(self):
tmp = self.copy()
tmp._update(arg, kw, rollback=False, on_dup=on_dup)
self._init_from(tmp)
return
# In all other cases, benchmarking has indicated that the update is best implemented as follows:
# For each new item, perform a dup check (raising if necessary), and apply the associated writes we need to
# perform on our backing _fwdm and _invm mappings. If rollback is enabled, also compute the associated unwrites
# as we go. If the update results in a DuplicationError and rollback is enabled, apply the accumulated unwrites
# before raising, to ensure that we fail clean.
write = self._write
unwrites: Unwrites | None = [] if rollback else None
for key, val in iteritems(arg, **kw):
try:
dedup_result = self._dedup(key, val, on_dup)
except DuplicationError:
if unwrites is not None:
for fn, *args in reversed(unwrites):
fn(*args)
raise
if dedup_result is not None:
write(key, val, *dedup_result, unwrites=unwrites)
def __copy__(self: BT) -> BT:
"""Used for the copy protocol. See the :mod:`copy` module."""
return self.copy()
def copy(self: BT) -> BT:
"""Make a (shallow) copy of this bidict."""
# Could just `return self.__class__(self)` here, but the below is faster. The former
# would copy this bidict's items into a new instance one at a time (checking for duplication
# for each item), whereas the below copies from the backing mappings all at once, and foregoes
# item-by-item duplication checking since the backing mappings have been checked already.
return self._from_other(self.__class__, self)
@staticmethod
def _from_other(bt: type[BT], other: MapOrItems[KT, VT], inv: bool = False) -> BT:
"""Fast, private constructor based on :meth:`_init_from`.
If *inv* is true, return the inverse of the instance instead of the instance itself.
(Useful for pickling with dynamically-generated inverse classes -- see :meth:`__reduce__`.)
"""
inst = bt()
inst._init_from(other)
return t.cast(BT, inst.inverse) if inv else inst
def _init_from(self, other: MapOrItems[KT, VT]) -> None:
"""Fast init from *other*, bypassing item-by-item duplication checking."""
self._fwdm.clear()
self._invm.clear()
self._fwdm.update(other)
# If other is a bidict, use its existing backing inverse mapping, otherwise
# other could be a generator that's now exhausted, so invert self._fwdm on the fly.
inv = other.inverse if isinstance(other, BidictBase) else inverted(self._fwdm)
self._invm.update(inv)
# other's type is Mapping rather than Maplike since bidict() | SupportsKeysAndGetItem({})
# raises a TypeError, just like dict() | SupportsKeysAndGetItem({}) does.
def __or__(self: BT, other: t.Mapping[KT, VT]) -> BT:
"""Return self|other."""
if not isinstance(other, t.Mapping):
return NotImplemented
new = self.copy()
new._update(other, rollback=False)
return new
def __ror__(self: BT, other: t.Mapping[KT, VT]) -> BT:
"""Return other|self."""
if not isinstance(other, t.Mapping):
return NotImplemented
new = self.__class__(other)
new._update(self, rollback=False)
return new
def __len__(self) -> int:
"""The number of contained items."""
return len(self._fwdm)
def __iter__(self) -> t.Iterator[KT]:
"""Iterator over the contained keys."""
return iter(self._fwdm)
def __getitem__(self, key: KT) -> VT:
"""*x.__getitem__(key) ⟺ x[key]*"""
return self._fwdm[key]
def __reduce__(self) -> tuple[t.Any, ...]:
"""Return state information for pickling."""
cls = self.__class__
inst: t.Mapping[t.Any, t.Any] = self
# If this bidict's class is dynamically generated, pickle the inverse instead, whose (presumably not
# dynamically generated) class the caller is more likely to have a reference to somewhere in sys.modules
# that pickle can discover.
if should_invert := isinstance(self, GeneratedBidictInverse):
cls = self._inv_cls
inst = self.inverse
return self._from_other, (cls, dict(inst), should_invert)
# See BidictBase._set_reversed() above.
def _fwdm_reversed(self: BidictBase[KT, t.Any]) -> t.Iterator[KT]:
"""Iterator over the contained keys in reverse order."""
assert isinstance(self._fwdm, t.Reversible)
return reversed(self._fwdm)
BidictBase._init_class()
class GeneratedBidictInverse:
"""Base class for dynamically-generated inverse bidict classes."""
# * Code review nav *
# ============================================================================
# ← Prev: _abc.py Current: _base.py Next: _frozen.py →
# ============================================================================

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# Copyright 2009-2024 Joshua Bronson. All rights reserved.
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
# * Code review nav *
# (see comments in __init__.py)
# ============================================================================
# ← Prev: _frozen.py Current: _bidict.py Next: _orderedbase.py →
# ============================================================================
"""Provide :class:`MutableBidict` and :class:`bidict`."""
from __future__ import annotations
import typing as t
from ._abc import MutableBidirectionalMapping
from ._base import BidictBase
from ._dup import ON_DUP_DROP_OLD
from ._dup import ON_DUP_RAISE
from ._dup import OnDup
from ._typing import DT
from ._typing import KT
from ._typing import MISSING
from ._typing import ODT
from ._typing import VT
from ._typing import MapOrItems
class MutableBidict(BidictBase[KT, VT], MutableBidirectionalMapping[KT, VT]):
"""Base class for mutable bidirectional mappings."""
if t.TYPE_CHECKING:
@property
def inverse(self) -> MutableBidict[VT, KT]: ...
@property
def inv(self) -> MutableBidict[VT, KT]: ...
def _pop(self, key: KT) -> VT:
val = self._fwdm.pop(key)
del self._invm[val]
return val
def __delitem__(self, key: KT) -> None:
"""*x.__delitem__(y)　⟺　del x[y]*"""
self._pop(key)
def __setitem__(self, key: KT, val: VT) -> None:
"""Set the value for *key* to *val*.
If *key* is already associated with *val*, this is a no-op.
If *key* is already associated with a different value,
the old value will be replaced with *val*,
as with dict's :meth:`__setitem__`.
If *val* is already associated with a different key,
an exception is raised
to protect against accidental removal of the key
that's currently associated with *val*.
Use :meth:`put` instead if you want to specify different behavior in
the case that the provided key or value duplicates an existing one.
Or use :meth:`forceput` to unconditionally associate *key* with *val*,
replacing any existing items as necessary to preserve uniqueness.
:raises bidict.ValueDuplicationError: if *val* duplicates that of an
existing item.
:raises bidict.KeyAndValueDuplicationError: if *key* duplicates the key of an
existing item and *val* duplicates the value of a different
existing item.
"""
self.put(key, val, on_dup=self.on_dup)
def put(self, key: KT, val: VT, on_dup: OnDup = ON_DUP_RAISE) -> None:
"""Associate *key* with *val*, honoring the :class:`OnDup` given in *on_dup*.
For example, if *on_dup* is :attr:`~bidict.ON_DUP_RAISE`,
then *key* will be associated with *val* if and only if
*key* is not already associated with an existing value and
*val* is not already associated with an existing key,
otherwise an exception will be raised.
If *key* is already associated with *val*, this is a no-op.
:raises bidict.KeyDuplicationError: if attempting to insert an item
whose key only duplicates an existing item's, and *on_dup.key* is
:attr:`~bidict.RAISE`.
:raises bidict.ValueDuplicationError: if attempting to insert an item
whose value only duplicates an existing item's, and *on_dup.val* is
:attr:`~bidict.RAISE`.
:raises bidict.KeyAndValueDuplicationError: if attempting to insert an
item whose key duplicates one existing item's, and whose value
duplicates another existing item's, and *on_dup.val* is
:attr:`~bidict.RAISE`.
"""
self._update(((key, val),), on_dup=on_dup)
def forceput(self, key: KT, val: VT) -> None:
"""Associate *key* with *val* unconditionally.
Replace any existing mappings containing key *key* or value *val*
as necessary to preserve uniqueness.
"""
self.put(key, val, on_dup=ON_DUP_DROP_OLD)
def clear(self) -> None:
"""Remove all items."""
self._fwdm.clear()
self._invm.clear()
@t.overload
def pop(self, key: KT, /) -> VT: ...
@t.overload
def pop(self, key: KT, default: DT = ..., /) -> VT | DT: ...
def pop(self, key: KT, default: ODT[DT] = MISSING, /) -> VT | DT:
"""*x.pop(k[, d]) → v*
Remove specified key and return the corresponding value.
:raises KeyError: if *key* is not found and no *default* is provided.
"""
try:
return self._pop(key)
except KeyError:
if default is MISSING:
raise
return default
def popitem(self) -> tuple[KT, VT]:
"""*x.popitem() → (k, v)*
Remove and return some item as a (key, value) pair.
:raises KeyError: if *x* is empty.
"""
key, val = self._fwdm.popitem()
del self._invm[val]
return key, val
def update(self, arg: MapOrItems[KT, VT] = (), /, **kw: VT) -> None:
"""Like calling :meth:`putall` with *self.on_dup* passed for *on_dup*."""
self._update(arg, kw=kw)
def forceupdate(self, arg: MapOrItems[KT, VT] = (), /, **kw: VT) -> None:
"""Like a bulk :meth:`forceput`."""
self._update(arg, kw=kw, on_dup=ON_DUP_DROP_OLD)
def putall(self, items: MapOrItems[KT, VT], on_dup: OnDup = ON_DUP_RAISE) -> None:
"""Like a bulk :meth:`put`.
If one of the given items causes an exception to be raised,
none of the items is inserted.
"""
self._update(items, on_dup=on_dup)
# other's type is Mapping rather than Maplike since bidict() |= SupportsKeysAndGetItem({})
# raises a TypeError, just like dict() |= SupportsKeysAndGetItem({}) does.
def __ior__(self, other: t.Mapping[KT, VT]) -> MutableBidict[KT, VT]:
"""Return self|=other."""
self.update(other)
return self
class bidict(MutableBidict[KT, VT]):
"""The main bidirectional mapping type.
See :ref:`intro:Introduction` and :ref:`basic-usage:Basic Usage`
to get started (also available at https://bidict.rtfd.io).
"""
if t.TYPE_CHECKING:
@property
def inverse(self) -> bidict[VT, KT]: ...
@property
def inv(self) -> bidict[VT, KT]: ...
# * Code review nav *
# ============================================================================
# ← Prev: _frozen.py Current: _bidict.py Next: _orderedbase.py →
# ============================================================================

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# Copyright 2009-2024 Joshua Bronson. All rights reserved.
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
"""Provide :class:`OnDup` and related functionality."""
from __future__ import annotations
import typing as t
from enum import Enum
class OnDupAction(Enum):
"""An action to take to prevent duplication from occurring."""
#: Raise a :class:`~bidict.DuplicationError`.
RAISE = 'RAISE'
#: Overwrite existing items with new items.
DROP_OLD = 'DROP_OLD'
#: Keep existing items and drop new items.
DROP_NEW = 'DROP_NEW'
def __repr__(self) -> str:
return f'{self.__class__.__name__}.{self.name}'
RAISE: t.Final[OnDupAction] = OnDupAction.RAISE
DROP_OLD: t.Final[OnDupAction] = OnDupAction.DROP_OLD
DROP_NEW: t.Final[OnDupAction] = OnDupAction.DROP_NEW
class OnDup(t.NamedTuple):
r"""A combination of :class:`~bidict.OnDupAction`\s specifying how to handle various types of duplication.
The :attr:`~OnDup.key` field specifies what action to take when a duplicate key is encountered.
The :attr:`~OnDup.val` field specifies what action to take when a duplicate value is encountered.
In the case of both key and value duplication across two different items,
only :attr:`~OnDup.val` is used.
*See also* :ref:`basic-usage:Values Must Be Unique`
(https://bidict.rtfd.io/basic-usage.html#values-must-be-unique)
"""
key: OnDupAction = DROP_OLD
val: OnDupAction = RAISE
#: Default :class:`OnDup` used for the
#: :meth:`~bidict.bidict.__init__`,
#: :meth:`~bidict.bidict.__setitem__`, and
#: :meth:`~bidict.bidict.update` methods.
ON_DUP_DEFAULT: t.Final[OnDup] = OnDup(key=DROP_OLD, val=RAISE)
#: An :class:`OnDup` whose members are all :obj:`RAISE`.
ON_DUP_RAISE: t.Final[OnDup] = OnDup(key=RAISE, val=RAISE)
#: An :class:`OnDup` whose members are all :obj:`DROP_OLD`.
ON_DUP_DROP_OLD: t.Final[OnDup] = OnDup(key=DROP_OLD, val=DROP_OLD)

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# Copyright 2009-2024 Joshua Bronson. All rights reserved.
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
"""Provide all bidict exceptions."""
from __future__ import annotations
class BidictException(Exception):
"""Base class for bidict exceptions."""
class DuplicationError(BidictException):
"""Base class for exceptions raised when uniqueness is violated
as per the :attr:`~bidict.RAISE` :class:`~bidict.OnDupAction`.
"""
class KeyDuplicationError(DuplicationError):
"""Raised when a given key is not unique."""
class ValueDuplicationError(DuplicationError):
"""Raised when a given value is not unique."""
class KeyAndValueDuplicationError(KeyDuplicationError, ValueDuplicationError):
"""Raised when a given item's key and value are not unique.
That is, its key duplicates that of another item,
and its value duplicates that of a different other item.
"""

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# Copyright 2009-2024 Joshua Bronson. All rights reserved.
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
# * Code review nav *
# (see comments in __init__.py)
# ============================================================================
# ← Prev: _base.py Current: _frozen.py Next: _bidict.py →
# ============================================================================
"""Provide :class:`frozenbidict`, an immutable, hashable bidirectional mapping type."""
from __future__ import annotations
import typing as t
from ._base import BidictBase
from ._typing import KT
from ._typing import VT
class frozenbidict(BidictBase[KT, VT]):
"""Immutable, hashable bidict type."""
_hash: int
if t.TYPE_CHECKING:
@property
def inverse(self) -> frozenbidict[VT, KT]: ...
@property
def inv(self) -> frozenbidict[VT, KT]: ...
def __hash__(self) -> int:
"""The hash of this bidict as determined by its items."""
if getattr(self, '_hash', None) is None:
# The following is like hash(frozenset(self.items()))
# but more memory efficient. See also: https://bugs.python.org/issue46684
self._hash = t.ItemsView(self)._hash()
return self._hash
# * Code review nav *
# ============================================================================
# ← Prev: _base.py Current: _frozen.py Next: _bidict.py →
# ============================================================================

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# Copyright 2009-2024 Joshua Bronson. All rights reserved.
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
"""Functions for iterating over items in a mapping."""
from __future__ import annotations
import typing as t
from operator import itemgetter
from ._typing import KT
from ._typing import VT
from ._typing import ItemsIter
from ._typing import Maplike
from ._typing import MapOrItems
def iteritems(arg: MapOrItems[KT, VT] = (), /, **kw: VT) -> ItemsIter[KT, VT]:
"""Yield the items from *arg* and *kw* in the order given."""
if isinstance(arg, t.Mapping):
yield from arg.items()
elif isinstance(arg, Maplike):
yield from ((k, arg[k]) for k in arg.keys())
else:
yield from arg
yield from t.cast(ItemsIter[KT, VT], kw.items())
swap: t.Final = itemgetter(1, 0)
def inverted(arg: MapOrItems[KT, VT]) -> ItemsIter[VT, KT]:
"""Yield the inverse items of the provided object.
If *arg* has a :func:`callable` ``__inverted__`` attribute,
return the result of calling it.
Otherwise, return an iterator over the items in `arg`,
inverting each item on the fly.
*See also* :attr:`bidict.BidirectionalMapping.__inverted__`
"""
invattr = getattr(arg, '__inverted__', None)
if callable(invattr):
inv: ItemsIter[VT, KT] = invattr()
return inv
return map(swap, iteritems(arg))

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# Copyright 2009-2024 Joshua Bronson. All rights reserved.
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
# * Code review nav *
# (see comments in __init__.py)
# ============================================================================
# ← Prev: _bidict.py Current: _orderedbase.py Next: _orderedbidict.py →
# ============================================================================
"""Provide :class:`OrderedBidictBase`."""
from __future__ import annotations
import typing as t
from weakref import ref as weakref
from ._base import BidictBase
from ._base import Unwrites
from ._bidict import bidict
from ._iter import iteritems
from ._typing import KT
from ._typing import MISSING
from ._typing import OKT
from ._typing import OVT
from ._typing import VT
from ._typing import MapOrItems
AT = t.TypeVar('AT') # attr type
class WeakAttr(t.Generic[AT]):
"""Descriptor to automatically manage (de)referencing the given slot as a weakref.
See https://docs.python.org/3/howto/descriptor.html#managed-attributes
for an intro to using descriptors like this for managed attributes.
"""
def __init__(self, *, slot: str) -> None:
self.slot = slot
def __set__(self, instance: t.Any, value: AT) -> None:
setattr(instance, self.slot, weakref(value))
def __get__(self, instance: t.Any, __owner: t.Any = None) -> AT:
return t.cast(AT, getattr(instance, self.slot)())
class Node:
"""A node in a circular doubly-linked list
used to encode the order of items in an ordered bidict.
A weak reference to the previous node is stored
to avoid creating strong reference cycles.
Referencing/dereferencing the weakref is handled automatically by :class:`WeakAttr`.
"""
prv: WeakAttr[Node] = WeakAttr(slot='_prv_weak')
__slots__ = ('__weakref__', '_prv_weak', 'nxt')
nxt: Node | WeakAttr[Node] # Allow subclasses to use a WeakAttr for nxt too (see SentinelNode)
def __init__(self, prv: Node, nxt: Node) -> None:
self.prv = prv
self.nxt = nxt
def unlink(self) -> None:
"""Remove self from in between prv and nxt.
Self's references to prv and nxt are retained so it can be relinked (see below).
"""
self.prv.nxt = self.nxt
self.nxt.prv = self.prv
def relink(self) -> None:
"""Restore self between prv and nxt after unlinking (see above)."""
self.prv.nxt = self.nxt.prv = self
class SentinelNode(Node):
"""Special node in a circular doubly-linked list
that links the first node with the last node.
When its next and previous references point back to itself
it represents an empty list.
"""
nxt: WeakAttr[Node] = WeakAttr(slot='_nxt_weak')
__slots__ = ('_nxt_weak',)
def __init__(self) -> None:
super().__init__(self, self)
def iternodes(self, *, reverse: bool = False) -> t.Iterator[Node]:
"""Iterator yielding nodes in the requested order."""
attr = 'prv' if reverse else 'nxt'
node = getattr(self, attr)
while node is not self:
yield node
node = getattr(node, attr)
def new_last_node(self) -> Node:
"""Create and return a new terminal node."""
old_last = self.prv
new_last = Node(old_last, self)
old_last.nxt = self.prv = new_last
return new_last
class OrderedBidictBase(BidictBase[KT, VT]):
"""Base class implementing an ordered :class:`BidirectionalMapping`."""
_node_by_korv: bidict[t.Any, Node]
_bykey: bool
def __init__(self, arg: MapOrItems[KT, VT] = (), /, **kw: VT) -> None:
"""Make a new ordered bidirectional mapping.
The signature behaves like that of :class:`dict`.
Items passed in are added in the order they are passed,
respecting the :attr:`~bidict.BidictBase.on_dup`
class attribute in the process.
The order in which items are inserted is remembered,
similar to :class:`collections.OrderedDict`.
"""
self._sntl = SentinelNode()
self._node_by_korv = bidict()
self._bykey = True
super().__init__(arg, **kw)
if t.TYPE_CHECKING:
@property
def inverse(self) -> OrderedBidictBase[VT, KT]: ...
@property
def inv(self) -> OrderedBidictBase[VT, KT]: ...
def _make_inverse(self) -> OrderedBidictBase[VT, KT]:
inv = t.cast(OrderedBidictBase[VT, KT], super()._make_inverse())
inv._sntl = self._sntl
inv._node_by_korv = self._node_by_korv
inv._bykey = not self._bykey
return inv
def _assoc_node(self, node: Node, key: KT, val: VT) -> None:
korv = key if self._bykey else val
self._node_by_korv.forceput(korv, node)
def _dissoc_node(self, node: Node) -> None:
del self._node_by_korv.inverse[node]
node.unlink()
def _init_from(self, other: MapOrItems[KT, VT]) -> None:
"""See :meth:`BidictBase._init_from`."""
super()._init_from(other)
bykey = self._bykey
korv_by_node = self._node_by_korv.inverse
korv_by_node.clear()
korv_by_node_set = korv_by_node.__setitem__
self._sntl.nxt = self._sntl.prv = self._sntl
new_node = self._sntl.new_last_node
for k, v in iteritems(other):
korv_by_node_set(new_node(), k if bykey else v)
def _write(self, newkey: KT, newval: VT, oldkey: OKT[KT], oldval: OVT[VT], unwrites: Unwrites | None) -> None:
"""See :meth:`bidict.BidictBase._spec_write`."""
super()._write(newkey, newval, oldkey, oldval, unwrites)
assoc, dissoc = self._assoc_node, self._dissoc_node
node_by_korv, bykey = self._node_by_korv, self._bykey
if oldval is MISSING and oldkey is MISSING: # no key or value duplication
# {0: 1, 2: 3} | {4: 5} => {0: 1, 2: 3, 4: 5}
newnode = self._sntl.new_last_node()
assoc(newnode, newkey, newval)
if unwrites is not None:
unwrites.append((dissoc, newnode))
elif oldval is not MISSING and oldkey is not MISSING: # key and value duplication across two different items
# {0: 1, 2: 3} | {0: 3} => {0: 3}
# n1, n2 => n1 (collapse n1 and n2 into n1)
# oldkey: 2, oldval: 1, oldnode: n2, newkey: 0, newval: 3, newnode: n1
if bykey:
oldnode = node_by_korv[oldkey]
newnode = node_by_korv[newkey]
else:
oldnode = node_by_korv[newval]
newnode = node_by_korv[oldval]
dissoc(oldnode)
assoc(newnode, newkey, newval)
if unwrites is not None:
unwrites.extend((
(assoc, newnode, newkey, oldval),
(assoc, oldnode, oldkey, newval),
(oldnode.relink,),
))
elif oldval is not MISSING: # just key duplication
# {0: 1, 2: 3} | {2: 4} => {0: 1, 2: 4}
# oldkey: MISSING, oldval: 3, newkey: 2, newval: 4
node = node_by_korv[newkey if bykey else oldval]
assoc(node, newkey, newval)
if unwrites is not None:
unwrites.append((assoc, node, newkey, oldval))
else:
assert oldkey is not MISSING # just value duplication
# {0: 1, 2: 3} | {4: 3} => {0: 1, 4: 3}
# oldkey: 2, oldval: MISSING, newkey: 4, newval: 3
node = node_by_korv[oldkey if bykey else newval]
assoc(node, newkey, newval)
if unwrites is not None:
unwrites.append((assoc, node, oldkey, newval))
def __iter__(self) -> t.Iterator[KT]:
"""Iterator over the contained keys in insertion order."""
return self._iter(reverse=False)
def __reversed__(self) -> t.Iterator[KT]:
"""Iterator over the contained keys in reverse insertion order."""
return self._iter(reverse=True)
def _iter(self, *, reverse: bool = False) -> t.Iterator[KT]:
nodes = self._sntl.iternodes(reverse=reverse)
korv_by_node = self._node_by_korv.inverse
if self._bykey:
for node in nodes:
yield korv_by_node[node]
else:
key_by_val = self._invm
for node in nodes:
val = korv_by_node[node]
yield key_by_val[val]
# * Code review nav *
# ============================================================================
# ← Prev: _bidict.py Current: _orderedbase.py Next: _orderedbidict.py →
# ============================================================================

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# Copyright 2009-2024 Joshua Bronson. All rights reserved.
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
# * Code review nav *
# (see comments in __init__.py)
# ============================================================================
# ← Prev: _orderedbase.py Current: _orderedbidict.py <FIN>
# ============================================================================
"""Provide :class:`OrderedBidict`."""
from __future__ import annotations
import typing as t
from collections.abc import Set
from ._base import BidictKeysView
from ._bidict import MutableBidict
from ._orderedbase import OrderedBidictBase
from ._typing import KT
from ._typing import VT
class OrderedBidict(OrderedBidictBase[KT, VT], MutableBidict[KT, VT]):
"""Mutable bidict type that maintains items in insertion order."""
if t.TYPE_CHECKING:
@property
def inverse(self) -> OrderedBidict[VT, KT]: ...
@property
def inv(self) -> OrderedBidict[VT, KT]: ...
def clear(self) -> None:
"""Remove all items."""
super().clear()
self._node_by_korv.clear()
self._sntl.nxt = self._sntl.prv = self._sntl
def _pop(self, key: KT) -> VT:
val = super()._pop(key)
node = self._node_by_korv[key if self._bykey else val]
self._dissoc_node(node)
return val
def popitem(self, last: bool = True) -> tuple[KT, VT]:
"""*b.popitem() → (k, v)*
If *last* is true,
remove and return the most recently added item as a (key, value) pair.
Otherwise, remove and return the least recently added item.
:raises KeyError: if *b* is empty.
"""
if not self:
raise KeyError('OrderedBidict is empty')
node = getattr(self._sntl, 'prv' if last else 'nxt')
korv = self._node_by_korv.inverse[node]
if self._bykey:
return korv, self._pop(korv)
return self.inverse._pop(korv), korv
def move_to_end(self, key: KT, last: bool = True) -> None:
"""Move the item with the given key to the end if *last* is true, else to the beginning.
:raises KeyError: if *key* is missing
"""
korv = key if self._bykey else self._fwdm[key]
node = self._node_by_korv[korv]
node.prv.nxt = node.nxt
node.nxt.prv = node.prv
sntl = self._sntl
if last:
lastnode = sntl.prv
node.prv = lastnode
node.nxt = sntl
sntl.prv = lastnode.nxt = node
else:
firstnode = sntl.nxt
node.prv = sntl
node.nxt = firstnode
sntl.nxt = firstnode.prv = node
# Override the keys() and items() implementations inherited from BidictBase,
# which may delegate to the backing _fwdm dict, since this is a mutable ordered bidict,
# and therefore the ordering of items can get out of sync with the backing mappings
# after mutation. (Need not override values() because it delegates to .inverse.keys().)
def keys(self) -> t.KeysView[KT]:
"""A set-like object providing a view on the contained keys."""
return _OrderedBidictKeysView(self)
def items(self) -> t.ItemsView[KT, VT]:
"""A set-like object providing a view on the contained items."""
return _OrderedBidictItemsView(self)
# The following MappingView implementations use the __iter__ implementations
# inherited from their superclass counterparts in collections.abc, so they
# continue to yield items in the correct order even after an OrderedBidict
# is mutated. They also provide a __reversed__ implementation, which is not
# provided by the collections.abc superclasses.
class _OrderedBidictKeysView(BidictKeysView[KT]):
_mapping: OrderedBidict[KT, t.Any]
def __reversed__(self) -> t.Iterator[KT]:
return reversed(self._mapping)
class _OrderedBidictItemsView(t.ItemsView[KT, VT]):
_mapping: OrderedBidict[KT, VT]
def __reversed__(self) -> t.Iterator[tuple[KT, VT]]:
ob = self._mapping
for key in reversed(ob):
yield key, ob[key]
# For better performance, make _OrderedBidictKeysView and _OrderedBidictItemsView delegate
# to backing dicts for the methods they inherit from collections.abc.Set. (Cannot delegate
# for __iter__ and __reversed__ since they are order-sensitive.) See also: https://bugs.python.org/issue46713
_OView = t.Union[t.Type[_OrderedBidictKeysView[KT]], t.Type[_OrderedBidictItemsView[KT, t.Any]]]
_setmethodnames: t.Iterable[str] = (
'__lt__ __le__ __gt__ __ge__ __eq__ __ne__ __sub__ __rsub__ '
'__or__ __ror__ __xor__ __rxor__ __and__ __rand__ isdisjoint'
).split()
def _override_set_methods_to_use_backing_dict(cls: _OView[KT], viewname: str) -> None:
def make_proxy_method(methodname: str) -> t.Any:
def method(self: _OrderedBidictKeysView[KT] | _OrderedBidictItemsView[KT, t.Any], *args: t.Any) -> t.Any:
fwdm = self._mapping._fwdm
if not isinstance(fwdm, dict): # dict view speedup not available, fall back to Set's implementation.
return getattr(Set, methodname)(self, *args)
fwdm_dict_view = getattr(fwdm, viewname)()
fwdm_dict_view_method = getattr(fwdm_dict_view, methodname)
if (
len(args) != 1
or not isinstance((arg := args[0]), self.__class__)
or not isinstance(arg._mapping._fwdm, dict)
):
return fwdm_dict_view_method(*args)
# self and arg are both _OrderedBidictKeysViews or _OrderedBidictItemsViews whose bidicts are backed by
# a dict. Use arg's backing dict's corresponding view instead of arg. Otherwise, e.g. `ob1.keys()
# < ob2.keys()` would give "TypeError: '<' not supported between instances of '_OrderedBidictKeysView' and
# '_OrderedBidictKeysView'", because both `dict_keys(ob1).__lt__(ob2.keys()) is NotImplemented` and
# `dict_keys(ob2).__gt__(ob1.keys()) is NotImplemented`.
arg_dict = arg._mapping._fwdm
arg_dict_view = getattr(arg_dict, viewname)()
return fwdm_dict_view_method(arg_dict_view)
method.__name__ = methodname
method.__qualname__ = f'{cls.__qualname__}.{methodname}'
return method
for name in _setmethodnames:
setattr(cls, name, make_proxy_method(name))
_override_set_methods_to_use_backing_dict(_OrderedBidictKeysView, 'keys')
_override_set_methods_to_use_backing_dict(_OrderedBidictItemsView, 'items')
# * Code review nav *
# ============================================================================
# ← Prev: _orderedbase.py Current: _orderedbidict.py <FIN>
# ============================================================================

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# Copyright 2009-2024 Joshua Bronson. All rights reserved.
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
"""Provide typing-related objects."""
from __future__ import annotations
import typing as t
from enum import Enum
KT = t.TypeVar('KT')
VT = t.TypeVar('VT')
VT_co = t.TypeVar('VT_co', covariant=True)
Items = t.Iterable[t.Tuple[KT, VT]]
@t.runtime_checkable
class Maplike(t.Protocol[KT, VT_co]):
"""Like typeshed's SupportsKeysAndGetItem, but usable at runtime."""
def keys(self) -> t.Iterable[KT]: ...
def __getitem__(self, __key: KT) -> VT_co: ...
MapOrItems = t.Union[Maplike[KT, VT], Items[KT, VT]]
MappOrItems = t.Union[t.Mapping[KT, VT], Items[KT, VT]]
ItemsIter = t.Iterator[t.Tuple[KT, VT]]
class MissingT(Enum):
"""Sentinel used to represent none/missing when None itself can't be used."""
MISSING = 'MISSING'
MISSING: t.Final[t.Literal[MissingT.MISSING]] = MissingT.MISSING
OKT = t.Union[KT, MissingT] #: optional key type
OVT = t.Union[VT, MissingT] #: optional value type
DT = t.TypeVar('DT') #: for default arguments
ODT = t.Union[DT, MissingT] #: optional default arg type

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# Copyright 2009-2024 Joshua Bronson. All rights reserved.
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
"""Define bidict package metadata."""
__version__ = '0.23.1'
__author__ = {'name': 'Joshua Bronson', 'email': 'jabronson@gmail.com'}
__copyright__ = '© 2009-2024 Joshua Bronson'
__description__ = 'The bidirectional mapping library for Python.'
__license__ = 'MPL 2.0'
__url__ = 'https://bidict.readthedocs.io'

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PEP-561 marker.

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pip

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Copyright 2010 Jason Kirtland
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: 2.3
Name: blinker
Version: 1.9.0
Summary: Fast, simple object-to-object and broadcast signaling
Author: Jason Kirtland
Maintainer-email: Pallets Ecosystem <contact@palletsprojects.com>
Requires-Python: >=3.9
Description-Content-Type: text/markdown
Classifier: Development Status :: 5 - Production/Stable
Classifier: License :: OSI Approved :: MIT License
Classifier: Programming Language :: Python
Classifier: Typing :: Typed
Project-URL: Chat, https://discord.gg/pallets
Project-URL: Documentation, https://blinker.readthedocs.io
Project-URL: Source, https://github.com/pallets-eco/blinker/
# Blinker
Blinker provides a fast dispatching system that allows any number of
interested parties to subscribe to events, or "signals".
## Pallets Community Ecosystem
> [!IMPORTANT]\
> This project is part of the Pallets Community Ecosystem. Pallets is the open
> source organization that maintains Flask; Pallets-Eco enables community
> maintenance of related projects. If you are interested in helping maintain
> this project, please reach out on [the Pallets Discord server][discord].
>
> [discord]: https://discord.gg/pallets
## Example
Signal receivers can subscribe to specific senders or receive signals
sent by any sender.
```pycon
>>> from blinker import signal
>>> started = signal('round-started')
>>> def each(round):
... print(f"Round {round}")
...
>>> started.connect(each)
>>> def round_two(round):
... print("This is round two.")
...
>>> started.connect(round_two, sender=2)
>>> for round in range(1, 4):
... started.send(round)
...
Round 1!
Round 2!
This is round two.
Round 3!
```

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blinker-1.9.0.dist-info/INSTALLER,sha256=zuuue4knoyJ-UwPPXg8fezS7VCrXJQrAP7zeNuwvFQg,4
blinker-1.9.0.dist-info/LICENSE.txt,sha256=nrc6HzhZekqhcCXSrhvjg5Ykx5XphdTw6Xac4p-spGc,1054
blinker-1.9.0.dist-info/METADATA,sha256=uIRiM8wjjbHkCtbCyTvctU37IAZk0kEe5kxAld1dvzA,1633
blinker-1.9.0.dist-info/RECORD,,
blinker-1.9.0.dist-info/WHEEL,sha256=CpUCUxeHQbRN5UGRQHYRJorO5Af-Qy_fHMctcQ8DSGI,82
blinker/__init__.py,sha256=I2EdZqpy4LyjX17Hn1yzJGWCjeLaVaPzsMgHkLfj_cQ,317
blinker/__pycache__/__init__.cpython-312.pyc,,
blinker/__pycache__/_utilities.cpython-312.pyc,,
blinker/__pycache__/base.cpython-312.pyc,,
blinker/_utilities.py,sha256=0J7eeXXTUx0Ivf8asfpx0ycVkp0Eqfqnj117x2mYX9E,1675
blinker/base.py,sha256=QpDuvXXcwJF49lUBcH5BiST46Rz9wSG7VW_p7N_027M,19132
blinker/py.typed,sha256=47DEQpj8HBSa-_TImW-5JCeuQeRkm5NMpJWZG3hSuFU,0

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Wheel-Version: 1.0
Generator: flit 3.10.1
Root-Is-Purelib: true
Tag: py3-none-any

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from __future__ import annotations
from .base import ANY
from .base import default_namespace
from .base import NamedSignal
from .base import Namespace
from .base import Signal
from .base import signal
__all__ = [
"ANY",
"default_namespace",
"NamedSignal",
"Namespace",
"Signal",
"signal",
]

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from __future__ import annotations
import collections.abc as c
import inspect
import typing as t
from weakref import ref
from weakref import WeakMethod
T = t.TypeVar("T")
class Symbol:
"""A constant symbol, nicer than ``object()``. Repeated calls return the
same instance.
>>> Symbol('foo') is Symbol('foo')
True
>>> Symbol('foo')
foo
"""
symbols: t.ClassVar[dict[str, Symbol]] = {}
def __new__(cls, name: str) -> Symbol:
if name in cls.symbols:
return cls.symbols[name]
obj = super().__new__(cls)
cls.symbols[name] = obj
return obj
def __init__(self, name: str) -> None:
self.name = name
def __repr__(self) -> str:
return self.name
def __getnewargs__(self) -> tuple[t.Any, ...]:
return (self.name,)
def make_id(obj: object) -> c.Hashable:
"""Get a stable identifier for a receiver or sender, to be used as a dict
key or in a set.
"""
if inspect.ismethod(obj):
# The id of a bound method is not stable, but the id of the unbound
# function and instance are.
return id(obj.__func__), id(obj.__self__)
if isinstance(obj, (str, int)):
# Instances with the same value always compare equal and have the same
# hash, even if the id may change.
return obj
# Assume other types are not hashable but will always be the same instance.
return id(obj)
def make_ref(obj: T, callback: c.Callable[[ref[T]], None] | None = None) -> ref[T]:
if inspect.ismethod(obj):
return WeakMethod(obj, callback) # type: ignore[arg-type, return-value]
return ref(obj, callback)

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from __future__ import annotations
import collections.abc as c
import sys
import typing as t
import weakref
from collections import defaultdict
from contextlib import contextmanager
from functools import cached_property
from inspect import iscoroutinefunction
from ._utilities import make_id
from ._utilities import make_ref
from ._utilities import Symbol
F = t.TypeVar("F", bound=c.Callable[..., t.Any])
ANY = Symbol("ANY")
"""Symbol for "any sender"."""
ANY_ID = 0
class Signal:
"""A notification emitter.
:param doc: The docstring for the signal.
"""
ANY = ANY
"""An alias for the :data:`~blinker.ANY` sender symbol."""
set_class: type[set[t.Any]] = set
"""The set class to use for tracking connected receivers and senders.
Python's ``set`` is unordered. If receivers must be dispatched in the order
they were connected, an ordered set implementation can be used.
.. versionadded:: 1.7
"""
@cached_property
def receiver_connected(self) -> Signal:
"""Emitted at the end of each :meth:`connect` call.
The signal sender is the signal instance, and the :meth:`connect`
arguments are passed through: ``receiver``, ``sender``, and ``weak``.
.. versionadded:: 1.2
"""
return Signal(doc="Emitted after a receiver connects.")
@cached_property
def receiver_disconnected(self) -> Signal:
"""Emitted at the end of each :meth:`disconnect` call.
The sender is the signal instance, and the :meth:`disconnect` arguments
are passed through: ``receiver`` and ``sender``.
This signal is emitted **only** when :meth:`disconnect` is called
explicitly. This signal cannot be emitted by an automatic disconnect
when a weakly referenced receiver or sender goes out of scope, as the
instance is no longer be available to be used as the sender for this
signal.
An alternative approach is available by subscribing to
:attr:`receiver_connected` and setting up a custom weakref cleanup
callback on weak receivers and senders.
.. versionadded:: 1.2
"""
return Signal(doc="Emitted after a receiver disconnects.")
def __init__(self, doc: str | None = None) -> None:
if doc:
self.__doc__ = doc
self.receivers: dict[
t.Any, weakref.ref[c.Callable[..., t.Any]] | c.Callable[..., t.Any]
] = {}
"""The map of connected receivers. Useful to quickly check if any
receivers are connected to the signal: ``if s.receivers:``. The
structure and data is not part of the public API, but checking its
boolean value is.
"""
self.is_muted: bool = False
self._by_receiver: dict[t.Any, set[t.Any]] = defaultdict(self.set_class)
self._by_sender: dict[t.Any, set[t.Any]] = defaultdict(self.set_class)
self._weak_senders: dict[t.Any, weakref.ref[t.Any]] = {}
def connect(self, receiver: F, sender: t.Any = ANY, weak: bool = True) -> F:
"""Connect ``receiver`` to be called when the signal is sent by
``sender``.
:param receiver: The callable to call when :meth:`send` is called with
the given ``sender``, passing ``sender`` as a positional argument
along with any extra keyword arguments.
:param sender: Any object or :data:`ANY`. ``receiver`` will only be
called when :meth:`send` is called with this sender. If ``ANY``, the
receiver will be called for any sender. A receiver may be connected
to multiple senders by calling :meth:`connect` multiple times.
:param weak: Track the receiver with a :mod:`weakref`. The receiver will
be automatically disconnected when it is garbage collected. When
connecting a receiver defined within a function, set to ``False``,
otherwise it will be disconnected when the function scope ends.
"""
receiver_id = make_id(receiver)
sender_id = ANY_ID if sender is ANY else make_id(sender)
if weak:
self.receivers[receiver_id] = make_ref(
receiver, self._make_cleanup_receiver(receiver_id)
)
else:
self.receivers[receiver_id] = receiver
self._by_sender[sender_id].add(receiver_id)
self._by_receiver[receiver_id].add(sender_id)
if sender is not ANY and sender_id not in self._weak_senders:
# store a cleanup for weakref-able senders
try:
self._weak_senders[sender_id] = make_ref(
sender, self._make_cleanup_sender(sender_id)
)
except TypeError:
pass
if "receiver_connected" in self.__dict__ and self.receiver_connected.receivers:
try:
self.receiver_connected.send(
self, receiver=receiver, sender=sender, weak=weak
)
except TypeError:
# TODO no explanation or test for this
self.disconnect(receiver, sender)
raise
return receiver
def connect_via(self, sender: t.Any, weak: bool = False) -> c.Callable[[F], F]:
"""Connect the decorated function to be called when the signal is sent
by ``sender``.
The decorated function will be called when :meth:`send` is called with
the given ``sender``, passing ``sender`` as a positional argument along
with any extra keyword arguments.
:param sender: Any object or :data:`ANY`. ``receiver`` will only be
called when :meth:`send` is called with this sender. If ``ANY``, the
receiver will be called for any sender. A receiver may be connected
to multiple senders by calling :meth:`connect` multiple times.
:param weak: Track the receiver with a :mod:`weakref`. The receiver will
be automatically disconnected when it is garbage collected. When
connecting a receiver defined within a function, set to ``False``,
otherwise it will be disconnected when the function scope ends.=
.. versionadded:: 1.1
"""
def decorator(fn: F) -> F:
self.connect(fn, sender, weak)
return fn
return decorator
@contextmanager
def connected_to(
self, receiver: c.Callable[..., t.Any], sender: t.Any = ANY
) -> c.Generator[None, None, None]:
"""A context manager that temporarily connects ``receiver`` to the
signal while a ``with`` block executes. When the block exits, the
receiver is disconnected. Useful for tests.
:param receiver: The callable to call when :meth:`send` is called with
the given ``sender``, passing ``sender`` as a positional argument
along with any extra keyword arguments.
:param sender: Any object or :data:`ANY`. ``receiver`` will only be
called when :meth:`send` is called with this sender. If ``ANY``, the
receiver will be called for any sender.
.. versionadded:: 1.1
"""
self.connect(receiver, sender=sender, weak=False)
try:
yield None
finally:
self.disconnect(receiver)
@contextmanager
def muted(self) -> c.Generator[None, None, None]:
"""A context manager that temporarily disables the signal. No receivers
will be called if the signal is sent, until the ``with`` block exits.
Useful for tests.
"""
self.is_muted = True
try:
yield None
finally:
self.is_muted = False
def send(
self,
sender: t.Any | None = None,
/,
*,
_async_wrapper: c.Callable[
[c.Callable[..., c.Coroutine[t.Any, t.Any, t.Any]]], c.Callable[..., t.Any]
]
| None = None,
**kwargs: t.Any,
) -> list[tuple[c.Callable[..., t.Any], t.Any]]:
"""Call all receivers that are connected to the given ``sender``
or :data:`ANY`. Each receiver is called with ``sender`` as a positional
argument along with any extra keyword arguments. Return a list of
``(receiver, return value)`` tuples.
The order receivers are called is undefined, but can be influenced by
setting :attr:`set_class`.
If a receiver raises an exception, that exception will propagate up.
This makes debugging straightforward, with an assumption that correctly
implemented receivers will not raise.
:param sender: Call receivers connected to this sender, in addition to
those connected to :data:`ANY`.
:param _async_wrapper: Will be called on any receivers that are async
coroutines to turn them into sync callables. For example, could run
the receiver with an event loop.
:param kwargs: Extra keyword arguments to pass to each receiver.
.. versionchanged:: 1.7
Added the ``_async_wrapper`` argument.
"""
if self.is_muted:
return []
results = []
for receiver in self.receivers_for(sender):
if iscoroutinefunction(receiver):
if _async_wrapper is None:
raise RuntimeError("Cannot send to a coroutine function.")
result = _async_wrapper(receiver)(sender, **kwargs)
else:
result = receiver(sender, **kwargs)
results.append((receiver, result))
return results
async def send_async(
self,
sender: t.Any | None = None,
/,
*,
_sync_wrapper: c.Callable[
[c.Callable[..., t.Any]], c.Callable[..., c.Coroutine[t.Any, t.Any, t.Any]]
]
| None = None,
**kwargs: t.Any,
) -> list[tuple[c.Callable[..., t.Any], t.Any]]:
"""Await all receivers that are connected to the given ``sender``
or :data:`ANY`. Each receiver is called with ``sender`` as a positional
argument along with any extra keyword arguments. Return a list of
``(receiver, return value)`` tuples.
The order receivers are called is undefined, but can be influenced by
setting :attr:`set_class`.
If a receiver raises an exception, that exception will propagate up.
This makes debugging straightforward, with an assumption that correctly
implemented receivers will not raise.
:param sender: Call receivers connected to this sender, in addition to
those connected to :data:`ANY`.
:param _sync_wrapper: Will be called on any receivers that are sync
callables to turn them into async coroutines. For example,
could call the receiver in a thread.
:param kwargs: Extra keyword arguments to pass to each receiver.
.. versionadded:: 1.7
"""
if self.is_muted:
return []
results = []
for receiver in self.receivers_for(sender):
if not iscoroutinefunction(receiver):
if _sync_wrapper is None:
raise RuntimeError("Cannot send to a non-coroutine function.")
result = await _sync_wrapper(receiver)(sender, **kwargs)
else:
result = await receiver(sender, **kwargs)
results.append((receiver, result))
return results
def has_receivers_for(self, sender: t.Any) -> bool:
"""Check if there is at least one receiver that will be called with the
given ``sender``. A receiver connected to :data:`ANY` will always be
called, regardless of sender. Does not check if weakly referenced
receivers are still live. See :meth:`receivers_for` for a stronger
search.
:param sender: Check for receivers connected to this sender, in addition
to those connected to :data:`ANY`.
"""
if not self.receivers:
return False
if self._by_sender[ANY_ID]:
return True
if sender is ANY:
return False
return make_id(sender) in self._by_sender
def receivers_for(
self, sender: t.Any
) -> c.Generator[c.Callable[..., t.Any], None, None]:
"""Yield each receiver to be called for ``sender``, in addition to those
to be called for :data:`ANY`. Weakly referenced receivers that are not
live will be disconnected and skipped.
:param sender: Yield receivers connected to this sender, in addition
to those connected to :data:`ANY`.
"""
# TODO: test receivers_for(ANY)
if not self.receivers:
return
sender_id = make_id(sender)
if sender_id in self._by_sender:
ids = self._by_sender[ANY_ID] | self._by_sender[sender_id]
else:
ids = self._by_sender[ANY_ID].copy()
for receiver_id in ids:
receiver = self.receivers.get(receiver_id)
if receiver is None:
continue
if isinstance(receiver, weakref.ref):
strong = receiver()
if strong is None:
self._disconnect(receiver_id, ANY_ID)
continue
yield strong
else:
yield receiver
def disconnect(self, receiver: c.Callable[..., t.Any], sender: t.Any = ANY) -> None:
"""Disconnect ``receiver`` from being called when the signal is sent by
``sender``.
:param receiver: A connected receiver callable.
:param sender: Disconnect from only this sender. By default, disconnect
from all senders.
"""
sender_id: c.Hashable
if sender is ANY:
sender_id = ANY_ID
else:
sender_id = make_id(sender)
receiver_id = make_id(receiver)
self._disconnect(receiver_id, sender_id)
if (
"receiver_disconnected" in self.__dict__
and self.receiver_disconnected.receivers
):
self.receiver_disconnected.send(self, receiver=receiver, sender=sender)
def _disconnect(self, receiver_id: c.Hashable, sender_id: c.Hashable) -> None:
if sender_id == ANY_ID:
if self._by_receiver.pop(receiver_id, None) is not None:
for bucket in self._by_sender.values():
bucket.discard(receiver_id)
self.receivers.pop(receiver_id, None)
else:
self._by_sender[sender_id].discard(receiver_id)
self._by_receiver[receiver_id].discard(sender_id)
def _make_cleanup_receiver(
self, receiver_id: c.Hashable
) -> c.Callable[[weakref.ref[c.Callable[..., t.Any]]], None]:
"""Create a callback function to disconnect a weakly referenced
receiver when it is garbage collected.
"""
def cleanup(ref: weakref.ref[c.Callable[..., t.Any]]) -> None:
# If the interpreter is shutting down, disconnecting can result in a
# weird ignored exception. Don't call it in that case.
if not sys.is_finalizing():
self._disconnect(receiver_id, ANY_ID)
return cleanup
def _make_cleanup_sender(
self, sender_id: c.Hashable
) -> c.Callable[[weakref.ref[t.Any]], None]:
"""Create a callback function to disconnect all receivers for a weakly
referenced sender when it is garbage collected.
"""
assert sender_id != ANY_ID
def cleanup(ref: weakref.ref[t.Any]) -> None:
self._weak_senders.pop(sender_id, None)
for receiver_id in self._by_sender.pop(sender_id, ()):
self._by_receiver[receiver_id].discard(sender_id)
return cleanup
def _cleanup_bookkeeping(self) -> None:
"""Prune unused sender/receiver bookkeeping. Not threadsafe.
Connecting & disconnecting leaves behind a small amount of bookkeeping
data. Typical workloads using Blinker, for example in most web apps,
Flask, CLI scripts, etc., are not adversely affected by this
bookkeeping.
With a long-running process performing dynamic signal routing with high
volume, e.g. connecting to function closures, senders are all unique
object instances. Doing all of this over and over may cause memory usage
to grow due to extraneous bookkeeping. (An empty ``set`` for each stale
sender/receiver pair.)
This method will prune that bookkeeping away, with the caveat that such
pruning is not threadsafe. The risk is that cleanup of a fully
disconnected receiver/sender pair occurs while another thread is
connecting that same pair. If you are in the highly dynamic, unique
receiver/sender situation that has lead you to this method, that failure
mode is perhaps not a big deal for you.
"""
for mapping in (self._by_sender, self._by_receiver):
for ident, bucket in list(mapping.items()):
if not bucket:
mapping.pop(ident, None)
def _clear_state(self) -> None:
"""Disconnect all receivers and senders. Useful for tests."""
self._weak_senders.clear()
self.receivers.clear()
self._by_sender.clear()
self._by_receiver.clear()
class NamedSignal(Signal):
"""A named generic notification emitter. The name is not used by the signal
itself, but matches the key in the :class:`Namespace` that it belongs to.
:param name: The name of the signal within the namespace.
:param doc: The docstring for the signal.
"""
def __init__(self, name: str, doc: str | None = None) -> None:
super().__init__(doc)
#: The name of this signal.
self.name: str = name
def __repr__(self) -> str:
base = super().__repr__()
return f"{base[:-1]}; {self.name!r}>" # noqa: E702
class Namespace(dict[str, NamedSignal]):
"""A dict mapping names to signals."""
def signal(self, name: str, doc: str | None = None) -> NamedSignal:
"""Return the :class:`NamedSignal` for the given ``name``, creating it
if required. Repeated calls with the same name return the same signal.
:param name: The name of the signal.
:param doc: The docstring of the signal.
"""
if name not in self:
self[name] = NamedSignal(name, doc)
return self[name]
class _PNamespaceSignal(t.Protocol):
def __call__(self, name: str, doc: str | None = None) -> NamedSignal: ...
default_namespace: Namespace = Namespace()
"""A default :class:`Namespace` for creating named signals. :func:`signal`
creates a :class:`NamedSignal` in this namespace.
"""
signal: _PNamespaceSignal = default_namespace.signal
"""Return a :class:`NamedSignal` in :data:`default_namespace` with the given
``name``, creating it if required. Repeated calls with the same name return the
same signal.
"""

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pip

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Metadata-Version: 2.4
Name: click
Version: 8.3.0
Summary: Composable command line interface toolkit
Maintainer-email: Pallets <contact@palletsprojects.com>
Requires-Python: >=3.10
Description-Content-Type: text/markdown
License-Expression: BSD-3-Clause
Classifier: Development Status :: 5 - Production/Stable
Classifier: Intended Audience :: Developers
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python
Classifier: Typing :: Typed
License-File: LICENSE.txt
Requires-Dist: colorama; platform_system == 'Windows'
Project-URL: Changes, https://click.palletsprojects.com/page/changes/
Project-URL: Chat, https://discord.gg/pallets
Project-URL: Documentation, https://click.palletsprojects.com/
Project-URL: Donate, https://palletsprojects.com/donate
Project-URL: Source, https://github.com/pallets/click/
<div align="center"><img src="https://raw.githubusercontent.com/pallets/click/refs/heads/stable/docs/_static/click-name.svg" alt="" height="150"></div>
# Click
Click is a Python package for creating beautiful command line interfaces
in a composable way with as little code as necessary. It's the "Command
Line Interface Creation Kit". It's highly configurable but comes with
sensible defaults out of the box.
It aims to make the process of writing command line tools quick and fun
while also preventing any frustration caused by the inability to
implement an intended CLI API.
Click in three points:
- Arbitrary nesting of commands
- Automatic help page generation
- Supports lazy loading of subcommands at runtime
## A Simple Example
```python
import click
@click.command()
@click.option("--count", default=1, help="Number of greetings.")
@click.option("--name", prompt="Your name", help="The person to greet.")
def hello(count, name):
"""Simple program that greets NAME for a total of COUNT times."""
for _ in range(count):
click.echo(f"Hello, {name}!")
if __name__ == '__main__':
hello()
```
```
$ python hello.py --count=3
Your name: Click
Hello, Click!
Hello, Click!
Hello, Click!
```
## Donate
The Pallets organization develops and supports Click and other popular
packages. In order to grow the community of contributors and users, and
allow the maintainers to devote more time to the projects, [please
donate today][].
[please donate today]: https://palletsprojects.com/donate
## Contributing
See our [detailed contributing documentation][contrib] for many ways to
contribute, including reporting issues, requesting features, asking or answering
questions, and making PRs.
[contrib]: https://palletsprojects.com/contributing/

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Wheel-Version: 1.0
Generator: flit 3.12.0
Root-Is-Purelib: true
Tag: py3-none-any

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Copyright 2014 Pallets
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 the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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"""
Click is a simple Python module inspired by the stdlib optparse to make
writing command line scripts fun. Unlike other modules, it's based
around a simple API that does not come with too much magic and is
composable.
"""
from __future__ import annotations
from .core import Argument as Argument
from .core import Command as Command
from .core import CommandCollection as CommandCollection
from .core import Context as Context
from .core import Group as Group
from .core import Option as Option
from .core import Parameter as Parameter
from .decorators import argument as argument
from .decorators import command as command
from .decorators import confirmation_option as confirmation_option
from .decorators import group as group
from .decorators import help_option as help_option
from .decorators import make_pass_decorator as make_pass_decorator
from .decorators import option as option
from .decorators import pass_context as pass_context
from .decorators import pass_obj as pass_obj
from .decorators import password_option as password_option
from .decorators import version_option as version_option
from .exceptions import Abort as Abort
from .exceptions import BadArgumentUsage as BadArgumentUsage
from .exceptions import BadOptionUsage as BadOptionUsage
from .exceptions import BadParameter as BadParameter
from .exceptions import ClickException as ClickException
from .exceptions import FileError as FileError
from .exceptions import MissingParameter as MissingParameter
from .exceptions import NoSuchOption as NoSuchOption
from .exceptions import UsageError as UsageError
from .formatting import HelpFormatter as HelpFormatter
from .formatting import wrap_text as wrap_text
from .globals import get_current_context as get_current_context
from .termui import clear as clear
from .termui import confirm as confirm
from .termui import echo_via_pager as echo_via_pager
from .termui import edit as edit
from .termui import getchar as getchar
from .termui import launch as launch
from .termui import pause as pause
from .termui import progressbar as progressbar
from .termui import prompt as prompt
from .termui import secho as secho
from .termui import style as style
from .termui import unstyle as unstyle
from .types import BOOL as BOOL
from .types import Choice as Choice
from .types import DateTime as DateTime
from .types import File as File
from .types import FLOAT as FLOAT
from .types import FloatRange as FloatRange
from .types import INT as INT
from .types import IntRange as IntRange
from .types import ParamType as ParamType
from .types import Path as Path
from .types import STRING as STRING
from .types import Tuple as Tuple
from .types import UNPROCESSED as UNPROCESSED
from .types import UUID as UUID
from .utils import echo as echo
from .utils import format_filename as format_filename
from .utils import get_app_dir as get_app_dir
from .utils import get_binary_stream as get_binary_stream
from .utils import get_text_stream as get_text_stream
from .utils import open_file as open_file
def __getattr__(name: str) -> object:
import warnings
if name == "BaseCommand":
from .core import _BaseCommand
warnings.warn(
"'BaseCommand' is deprecated and will be removed in Click 9.0. Use"
" 'Command' instead.",
DeprecationWarning,
stacklevel=2,
)
return _BaseCommand
if name == "MultiCommand":
from .core import _MultiCommand
warnings.warn(
"'MultiCommand' is deprecated and will be removed in Click 9.0. Use"
" 'Group' instead.",
DeprecationWarning,
stacklevel=2,
)
return _MultiCommand
if name == "OptionParser":
from .parser import _OptionParser
warnings.warn(
"'OptionParser' is deprecated and will be removed in Click 9.0. The"
" old parser is available in 'optparse'.",
DeprecationWarning,
stacklevel=2,
)
return _OptionParser
if name == "__version__":
import importlib.metadata
import warnings
warnings.warn(
"The '__version__' attribute is deprecated and will be removed in"
" Click 9.1. Use feature detection or"
" 'importlib.metadata.version(\"click\")' instead.",
DeprecationWarning,
stacklevel=2,
)
return importlib.metadata.version("click")
raise AttributeError(name)

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from __future__ import annotations
import codecs
import collections.abc as cabc
import io
import os
import re
import sys
import typing as t
from types import TracebackType
from weakref import WeakKeyDictionary
CYGWIN = sys.platform.startswith("cygwin")
WIN = sys.platform.startswith("win")
auto_wrap_for_ansi: t.Callable[[t.TextIO], t.TextIO] | None = None
_ansi_re = re.compile(r"\033\[[;?0-9]*[a-zA-Z]")
def _make_text_stream(
stream: t.BinaryIO,
encoding: str | None,
errors: str | None,
force_readable: bool = False,
force_writable: bool = False,
) -> t.TextIO:
if encoding is None:
encoding = get_best_encoding(stream)
if errors is None:
errors = "replace"
return _NonClosingTextIOWrapper(
stream,
encoding,
errors,
line_buffering=True,
force_readable=force_readable,
force_writable=force_writable,
)
def is_ascii_encoding(encoding: str) -> bool:
"""Checks if a given encoding is ascii."""
try:
return codecs.lookup(encoding).name == "ascii"
except LookupError:
return False
def get_best_encoding(stream: t.IO[t.Any]) -> str:
"""Returns the default stream encoding if not found."""
rv = getattr(stream, "encoding", None) or sys.getdefaultencoding()
if is_ascii_encoding(rv):
return "utf-8"
return rv
class _NonClosingTextIOWrapper(io.TextIOWrapper):
def __init__(
self,
stream: t.BinaryIO,
encoding: str | None,
errors: str | None,
force_readable: bool = False,
force_writable: bool = False,
**extra: t.Any,
) -> None:
self._stream = stream = t.cast(
t.BinaryIO, _FixupStream(stream, force_readable, force_writable)
)
super().__init__(stream, encoding, errors, **extra)
def __del__(self) -> None:
try:
self.detach()
except Exception:
pass
def isatty(self) -> bool:
# https://bitbucket.org/pypy/pypy/issue/1803
return self._stream.isatty()
class _FixupStream:
"""The new io interface needs more from streams than streams
traditionally implement. As such, this fix-up code is necessary in
some circumstances.
The forcing of readable and writable flags are there because some tools
put badly patched objects on sys (one such offender are certain version
of jupyter notebook).
"""
def __init__(
self,
stream: t.BinaryIO,
force_readable: bool = False,
force_writable: bool = False,
):
self._stream = stream
self._force_readable = force_readable
self._force_writable = force_writable
def __getattr__(self, name: str) -> t.Any:
return getattr(self._stream, name)
def read1(self, size: int) -> bytes:
f = getattr(self._stream, "read1", None)
if f is not None:
return t.cast(bytes, f(size))
return self._stream.read(size)
def readable(self) -> bool:
if self._force_readable:
return True
x = getattr(self._stream, "readable", None)
if x is not None:
return t.cast(bool, x())
try:
self._stream.read(0)
except Exception:
return False
return True
def writable(self) -> bool:
if self._force_writable:
return True
x = getattr(self._stream, "writable", None)
if x is not None:
return t.cast(bool, x())
try:
self._stream.write(b"")
except Exception:
try:
self._stream.write(b"")
except Exception:
return False
return True
def seekable(self) -> bool:
x = getattr(self._stream, "seekable", None)
if x is not None:
return t.cast(bool, x())
try:
self._stream.seek(self._stream.tell())
except Exception:
return False
return True
def _is_binary_reader(stream: t.IO[t.Any], default: bool = False) -> bool:
try:
return isinstance(stream.read(0), bytes)
except Exception:
return default
# This happens in some cases where the stream was already
# closed. In this case, we assume the default.
def _is_binary_writer(stream: t.IO[t.Any], default: bool = False) -> bool:
try:
stream.write(b"")
except Exception:
try:
stream.write("")
return False
except Exception:
pass
return default
return True
def _find_binary_reader(stream: t.IO[t.Any]) -> t.BinaryIO | None:
# We need to figure out if the given stream is already binary.
# This can happen because the official docs recommend detaching
# the streams to get binary streams. Some code might do this, so
# we need to deal with this case explicitly.
if _is_binary_reader(stream, False):
return t.cast(t.BinaryIO, stream)
buf = getattr(stream, "buffer", None)
# Same situation here; this time we assume that the buffer is
# actually binary in case it's closed.
if buf is not None and _is_binary_reader(buf, True):
return t.cast(t.BinaryIO, buf)
return None
def _find_binary_writer(stream: t.IO[t.Any]) -> t.BinaryIO | None:
# We need to figure out if the given stream is already binary.
# This can happen because the official docs recommend detaching
# the streams to get binary streams. Some code might do this, so
# we need to deal with this case explicitly.
if _is_binary_writer(stream, False):
return t.cast(t.BinaryIO, stream)
buf = getattr(stream, "buffer", None)
# Same situation here; this time we assume that the buffer is
# actually binary in case it's closed.
if buf is not None and _is_binary_writer(buf, True):
return t.cast(t.BinaryIO, buf)
return None
def _stream_is_misconfigured(stream: t.TextIO) -> bool:
"""A stream is misconfigured if its encoding is ASCII."""
# If the stream does not have an encoding set, we assume it's set
# to ASCII. This appears to happen in certain unittest
# environments. It's not quite clear what the correct behavior is
# but this at least will force Click to recover somehow.
return is_ascii_encoding(getattr(stream, "encoding", None) or "ascii")
def _is_compat_stream_attr(stream: t.TextIO, attr: str, value: str | None) -> bool:
"""A stream attribute is compatible if it is equal to the
desired value or the desired value is unset and the attribute
has a value.
"""
stream_value = getattr(stream, attr, None)
return stream_value == value or (value is None and stream_value is not None)
def _is_compatible_text_stream(
stream: t.TextIO, encoding: str | None, errors: str | None
) -> bool:
"""Check if a stream's encoding and errors attributes are
compatible with the desired values.
"""
return _is_compat_stream_attr(
stream, "encoding", encoding
) and _is_compat_stream_attr(stream, "errors", errors)
def _force_correct_text_stream(
text_stream: t.IO[t.Any],
encoding: str | None,
errors: str | None,
is_binary: t.Callable[[t.IO[t.Any], bool], bool],
find_binary: t.Callable[[t.IO[t.Any]], t.BinaryIO | None],
force_readable: bool = False,
force_writable: bool = False,
) -> t.TextIO:
if is_binary(text_stream, False):
binary_reader = t.cast(t.BinaryIO, text_stream)
else:
text_stream = t.cast(t.TextIO, text_stream)
# If the stream looks compatible, and won't default to a
# misconfigured ascii encoding, return it as-is.
if _is_compatible_text_stream(text_stream, encoding, errors) and not (
encoding is None and _stream_is_misconfigured(text_stream)
):
return text_stream
# Otherwise, get the underlying binary reader.
possible_binary_reader = find_binary(text_stream)
# If that's not possible, silently use the original reader
# and get mojibake instead of exceptions.
if possible_binary_reader is None:
return text_stream
binary_reader = possible_binary_reader
# Default errors to replace instead of strict in order to get
# something that works.
if errors is None:
errors = "replace"
# Wrap the binary stream in a text stream with the correct
# encoding parameters.
return _make_text_stream(
binary_reader,
encoding,
errors,
force_readable=force_readable,
force_writable=force_writable,
)
def _force_correct_text_reader(
text_reader: t.IO[t.Any],
encoding: str | None,
errors: str | None,
force_readable: bool = False,
) -> t.TextIO:
return _force_correct_text_stream(
text_reader,
encoding,
errors,
_is_binary_reader,
_find_binary_reader,
force_readable=force_readable,
)
def _force_correct_text_writer(
text_writer: t.IO[t.Any],
encoding: str | None,
errors: str | None,
force_writable: bool = False,
) -> t.TextIO:
return _force_correct_text_stream(
text_writer,
encoding,
errors,
_is_binary_writer,
_find_binary_writer,
force_writable=force_writable,
)
def get_binary_stdin() -> t.BinaryIO:
reader = _find_binary_reader(sys.stdin)
if reader is None:
raise RuntimeError("Was not able to determine binary stream for sys.stdin.")
return reader
def get_binary_stdout() -> t.BinaryIO:
writer = _find_binary_writer(sys.stdout)
if writer is None:
raise RuntimeError("Was not able to determine binary stream for sys.stdout.")
return writer
def get_binary_stderr() -> t.BinaryIO:
writer = _find_binary_writer(sys.stderr)
if writer is None:
raise RuntimeError("Was not able to determine binary stream for sys.stderr.")
return writer
def get_text_stdin(encoding: str | None = None, errors: str | None = None) -> t.TextIO:
rv = _get_windows_console_stream(sys.stdin, encoding, errors)
if rv is not None:
return rv
return _force_correct_text_reader(sys.stdin, encoding, errors, force_readable=True)
def get_text_stdout(encoding: str | None = None, errors: str | None = None) -> t.TextIO:
rv = _get_windows_console_stream(sys.stdout, encoding, errors)
if rv is not None:
return rv
return _force_correct_text_writer(sys.stdout, encoding, errors, force_writable=True)
def get_text_stderr(encoding: str | None = None, errors: str | None = None) -> t.TextIO:
rv = _get_windows_console_stream(sys.stderr, encoding, errors)
if rv is not None:
return rv
return _force_correct_text_writer(sys.stderr, encoding, errors, force_writable=True)
def _wrap_io_open(
file: str | os.PathLike[str] | int,
mode: str,
encoding: str | None,
errors: str | None,
) -> t.IO[t.Any]:
"""Handles not passing ``encoding`` and ``errors`` in binary mode."""
if "b" in mode:
return open(file, mode)
return open(file, mode, encoding=encoding, errors=errors)
def open_stream(
filename: str | os.PathLike[str],
mode: str = "r",
encoding: str | None = None,
errors: str | None = "strict",
atomic: bool = False,
) -> tuple[t.IO[t.Any], bool]:
binary = "b" in mode
filename = os.fspath(filename)
# Standard streams first. These are simple because they ignore the
# atomic flag. Use fsdecode to handle Path("-").
if os.fsdecode(filename) == "-":
if any(m in mode for m in ["w", "a", "x"]):
if binary:
return get_binary_stdout(), False
return get_text_stdout(encoding=encoding, errors=errors), False
if binary:
return get_binary_stdin(), False
return get_text_stdin(encoding=encoding, errors=errors), False
# Non-atomic writes directly go out through the regular open functions.
if not atomic:
return _wrap_io_open(filename, mode, encoding, errors), True
# Some usability stuff for atomic writes
if "a" in mode:
raise ValueError(
"Appending to an existing file is not supported, because that"
" would involve an expensive `copy`-operation to a temporary"
" file. Open the file in normal `w`-mode and copy explicitly"
" if that's what you're after."
)
if "x" in mode:
raise ValueError("Use the `overwrite`-parameter instead.")
if "w" not in mode:
raise ValueError("Atomic writes only make sense with `w`-mode.")
# Atomic writes are more complicated. They work by opening a file
# as a proxy in the same folder and then using the fdopen
# functionality to wrap it in a Python file. Then we wrap it in an
# atomic file that moves the file over on close.
import errno
import random
try:
perm: int | None = os.stat(filename).st_mode
except OSError:
perm = None
flags = os.O_RDWR | os.O_CREAT | os.O_EXCL
if binary:
flags |= getattr(os, "O_BINARY", 0)
while True:
tmp_filename = os.path.join(
os.path.dirname(filename),
f".__atomic-write{random.randrange(1 << 32):08x}",
)
try:
fd = os.open(tmp_filename, flags, 0o666 if perm is None else perm)
break
except OSError as e:
if e.errno == errno.EEXIST or (
os.name == "nt"
and e.errno == errno.EACCES
and os.path.isdir(e.filename)
and os.access(e.filename, os.W_OK)
):
continue
raise
if perm is not None:
os.chmod(tmp_filename, perm) # in case perm includes bits in umask
f = _wrap_io_open(fd, mode, encoding, errors)
af = _AtomicFile(f, tmp_filename, os.path.realpath(filename))
return t.cast(t.IO[t.Any], af), True
class _AtomicFile:
def __init__(self, f: t.IO[t.Any], tmp_filename: str, real_filename: str) -> None:
self._f = f
self._tmp_filename = tmp_filename
self._real_filename = real_filename
self.closed = False
@property
def name(self) -> str:
return self._real_filename
def close(self, delete: bool = False) -> None:
if self.closed:
return
self._f.close()
os.replace(self._tmp_filename, self._real_filename)
self.closed = True
def __getattr__(self, name: str) -> t.Any:
return getattr(self._f, name)
def __enter__(self) -> _AtomicFile:
return self
def __exit__(
self,
exc_type: type[BaseException] | None,
exc_value: BaseException | None,
tb: TracebackType | None,
) -> None:
self.close(delete=exc_type is not None)
def __repr__(self) -> str:
return repr(self._f)
def strip_ansi(value: str) -> str:
return _ansi_re.sub("", value)
def _is_jupyter_kernel_output(stream: t.IO[t.Any]) -> bool:
while isinstance(stream, (_FixupStream, _NonClosingTextIOWrapper)):
stream = stream._stream
return stream.__class__.__module__.startswith("ipykernel.")
def should_strip_ansi(
stream: t.IO[t.Any] | None = None, color: bool | None = None
) -> bool:
if color is None:
if stream is None:
stream = sys.stdin
return not isatty(stream) and not _is_jupyter_kernel_output(stream)
return not color
# On Windows, wrap the output streams with colorama to support ANSI
# color codes.
# NOTE: double check is needed so mypy does not analyze this on Linux
if sys.platform.startswith("win") and WIN:
from ._winconsole import _get_windows_console_stream
def _get_argv_encoding() -> str:
import locale
return locale.getpreferredencoding()
_ansi_stream_wrappers: cabc.MutableMapping[t.TextIO, t.TextIO] = WeakKeyDictionary()
def auto_wrap_for_ansi(stream: t.TextIO, color: bool | None = None) -> t.TextIO:
"""Support ANSI color and style codes on Windows by wrapping a
stream with colorama.
"""
try:
cached = _ansi_stream_wrappers.get(stream)
except Exception:
cached = None
if cached is not None:
return cached
import colorama
strip = should_strip_ansi(stream, color)
ansi_wrapper = colorama.AnsiToWin32(stream, strip=strip)
rv = t.cast(t.TextIO, ansi_wrapper.stream)
_write = rv.write
def _safe_write(s: str) -> int:
try:
return _write(s)
except BaseException:
ansi_wrapper.reset_all()
raise
rv.write = _safe_write # type: ignore[method-assign]
try:
_ansi_stream_wrappers[stream] = rv
except Exception:
pass
return rv
else:
def _get_argv_encoding() -> str:
return getattr(sys.stdin, "encoding", None) or sys.getfilesystemencoding()
def _get_windows_console_stream(
f: t.TextIO, encoding: str | None, errors: str | None
) -> t.TextIO | None:
return None
def term_len(x: str) -> int:
return len(strip_ansi(x))
def isatty(stream: t.IO[t.Any]) -> bool:
try:
return stream.isatty()
except Exception:
return False
def _make_cached_stream_func(
src_func: t.Callable[[], t.TextIO | None],
wrapper_func: t.Callable[[], t.TextIO],
) -> t.Callable[[], t.TextIO | None]:
cache: cabc.MutableMapping[t.TextIO, t.TextIO] = WeakKeyDictionary()
def func() -> t.TextIO | None:
stream = src_func()
if stream is None:
return None
try:
rv = cache.get(stream)
except Exception:
rv = None
if rv is not None:
return rv
rv = wrapper_func()
try:
cache[stream] = rv
except Exception:
pass
return rv
return func
_default_text_stdin = _make_cached_stream_func(lambda: sys.stdin, get_text_stdin)
_default_text_stdout = _make_cached_stream_func(lambda: sys.stdout, get_text_stdout)
_default_text_stderr = _make_cached_stream_func(lambda: sys.stderr, get_text_stderr)
binary_streams: cabc.Mapping[str, t.Callable[[], t.BinaryIO]] = {
"stdin": get_binary_stdin,
"stdout": get_binary_stdout,
"stderr": get_binary_stderr,
}
text_streams: cabc.Mapping[str, t.Callable[[str | None, str | None], t.TextIO]] = {
"stdin": get_text_stdin,
"stdout": get_text_stdout,
"stderr": get_text_stderr,
}

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"""
This module contains implementations for the termui module. To keep the
import time of Click down, some infrequently used functionality is
placed in this module and only imported as needed.
"""
from __future__ import annotations
import collections.abc as cabc
import contextlib
import math
import os
import shlex
import sys
import time
import typing as t
from gettext import gettext as _
from io import StringIO
from pathlib import Path
from types import TracebackType
from ._compat import _default_text_stdout
from ._compat import CYGWIN
from ._compat import get_best_encoding
from ._compat import isatty
from ._compat import open_stream
from ._compat import strip_ansi
from ._compat import term_len
from ._compat import WIN
from .exceptions import ClickException
from .utils import echo
V = t.TypeVar("V")
if os.name == "nt":
BEFORE_BAR = "\r"
AFTER_BAR = "\n"
else:
BEFORE_BAR = "\r\033[?25l"
AFTER_BAR = "\033[?25h\n"
class ProgressBar(t.Generic[V]):
def __init__(
self,
iterable: cabc.Iterable[V] | None,
length: int | None = None,
fill_char: str = "#",
empty_char: str = " ",
bar_template: str = "%(bar)s",
info_sep: str = " ",
hidden: bool = False,
show_eta: bool = True,
show_percent: bool | None = None,
show_pos: bool = False,
item_show_func: t.Callable[[V | None], str | None] | None = None,
label: str | None = None,
file: t.TextIO | None = None,
color: bool | None = None,
update_min_steps: int = 1,
width: int = 30,
) -> None:
self.fill_char = fill_char
self.empty_char = empty_char
self.bar_template = bar_template
self.info_sep = info_sep
self.hidden = hidden
self.show_eta = show_eta
self.show_percent = show_percent
self.show_pos = show_pos
self.item_show_func = item_show_func
self.label: str = label or ""
if file is None:
file = _default_text_stdout()
# There are no standard streams attached to write to. For example,
# pythonw on Windows.
if file is None:
file = StringIO()
self.file = file
self.color = color
self.update_min_steps = update_min_steps
self._completed_intervals = 0
self.width: int = width
self.autowidth: bool = width == 0
if length is None:
from operator import length_hint
length = length_hint(iterable, -1)
if length == -1:
length = None
if iterable is None:
if length is None:
raise TypeError("iterable or length is required")
iterable = t.cast("cabc.Iterable[V]", range(length))
self.iter: cabc.Iterable[V] = iter(iterable)
self.length = length
self.pos: int = 0
self.avg: list[float] = []
self.last_eta: float
self.start: float
self.start = self.last_eta = time.time()
self.eta_known: bool = False
self.finished: bool = False
self.max_width: int | None = None
self.entered: bool = False
self.current_item: V | None = None
self._is_atty = isatty(self.file)
self._last_line: str | None = None
def __enter__(self) -> ProgressBar[V]:
self.entered = True
self.render_progress()
return self
def __exit__(
self,
exc_type: type[BaseException] | None,
exc_value: BaseException | None,
tb: TracebackType | None,
) -> None:
self.render_finish()
def __iter__(self) -> cabc.Iterator[V]:
if not self.entered:
raise RuntimeError("You need to use progress bars in a with block.")
self.render_progress()
return self.generator()
def __next__(self) -> V:
# Iteration is defined in terms of a generator function,
# returned by iter(self); use that to define next(). This works
# because `self.iter` is an iterable consumed by that generator,
# so it is re-entry safe. Calling `next(self.generator())`
# twice works and does "what you want".
return next(iter(self))
def render_finish(self) -> None:
if self.hidden or not self._is_atty:
return
self.file.write(AFTER_BAR)
self.file.flush()
@property
def pct(self) -> float:
if self.finished:
return 1.0
return min(self.pos / (float(self.length or 1) or 1), 1.0)
@property
def time_per_iteration(self) -> float:
if not self.avg:
return 0.0
return sum(self.avg) / float(len(self.avg))
@property
def eta(self) -> float:
if self.length is not None and not self.finished:
return self.time_per_iteration * (self.length - self.pos)
return 0.0
def format_eta(self) -> str:
if self.eta_known:
t = int(self.eta)
seconds = t % 60
t //= 60
minutes = t % 60
t //= 60
hours = t % 24
t //= 24
if t > 0:
return f"{t}d {hours:02}:{minutes:02}:{seconds:02}"
else:
return f"{hours:02}:{minutes:02}:{seconds:02}"
return ""
def format_pos(self) -> str:
pos = str(self.pos)
if self.length is not None:
pos += f"/{self.length}"
return pos
def format_pct(self) -> str:
return f"{int(self.pct * 100): 4}%"[1:]
def format_bar(self) -> str:
if self.length is not None:
bar_length = int(self.pct * self.width)
bar = self.fill_char * bar_length
bar += self.empty_char * (self.width - bar_length)
elif self.finished:
bar = self.fill_char * self.width
else:
chars = list(self.empty_char * (self.width or 1))
if self.time_per_iteration != 0:
chars[
int(
(math.cos(self.pos * self.time_per_iteration) / 2.0 + 0.5)
* self.width
)
] = self.fill_char
bar = "".join(chars)
return bar
def format_progress_line(self) -> str:
show_percent = self.show_percent
info_bits = []
if self.length is not None and show_percent is None:
show_percent = not self.show_pos
if self.show_pos:
info_bits.append(self.format_pos())
if show_percent:
info_bits.append(self.format_pct())
if self.show_eta and self.eta_known and not self.finished:
info_bits.append(self.format_eta())
if self.item_show_func is not None:
item_info = self.item_show_func(self.current_item)
if item_info is not None:
info_bits.append(item_info)
return (
self.bar_template
% {
"label": self.label,
"bar": self.format_bar(),
"info": self.info_sep.join(info_bits),
}
).rstrip()
def render_progress(self) -> None:
if self.hidden:
return
if not self._is_atty:
# Only output the label once if the output is not a TTY.
if self._last_line != self.label:
self._last_line = self.label
echo(self.label, file=self.file, color=self.color)
return
buf = []
# Update width in case the terminal has been resized
if self.autowidth:
import shutil
old_width = self.width
self.width = 0
clutter_length = term_len(self.format_progress_line())
new_width = max(0, shutil.get_terminal_size().columns - clutter_length)
if new_width < old_width and self.max_width is not None:
buf.append(BEFORE_BAR)
buf.append(" " * self.max_width)
self.max_width = new_width
self.width = new_width
clear_width = self.width
if self.max_width is not None:
clear_width = self.max_width
buf.append(BEFORE_BAR)
line = self.format_progress_line()
line_len = term_len(line)
if self.max_width is None or self.max_width < line_len:
self.max_width = line_len
buf.append(line)
buf.append(" " * (clear_width - line_len))
line = "".join(buf)
# Render the line only if it changed.
if line != self._last_line:
self._last_line = line
echo(line, file=self.file, color=self.color, nl=False)
self.file.flush()
def make_step(self, n_steps: int) -> None:
self.pos += n_steps
if self.length is not None and self.pos >= self.length:
self.finished = True
if (time.time() - self.last_eta) < 1.0:
return
self.last_eta = time.time()
# self.avg is a rolling list of length <= 7 of steps where steps are
# defined as time elapsed divided by the total progress through
# self.length.
if self.pos:
step = (time.time() - self.start) / self.pos
else:
step = time.time() - self.start
self.avg = self.avg[-6:] + [step]
self.eta_known = self.length is not None
def update(self, n_steps: int, current_item: V | None = None) -> None:
"""Update the progress bar by advancing a specified number of
steps, and optionally set the ``current_item`` for this new
position.
:param n_steps: Number of steps to advance.
:param current_item: Optional item to set as ``current_item``
for the updated position.
.. versionchanged:: 8.0
Added the ``current_item`` optional parameter.
.. versionchanged:: 8.0
Only render when the number of steps meets the
``update_min_steps`` threshold.
"""
if current_item is not None:
self.current_item = current_item
self._completed_intervals += n_steps
if self._completed_intervals >= self.update_min_steps:
self.make_step(self._completed_intervals)
self.render_progress()
self._completed_intervals = 0
def finish(self) -> None:
self.eta_known = False
self.current_item = None
self.finished = True
def generator(self) -> cabc.Iterator[V]:
"""Return a generator which yields the items added to the bar
during construction, and updates the progress bar *after* the
yielded block returns.
"""
# WARNING: the iterator interface for `ProgressBar` relies on
# this and only works because this is a simple generator which
# doesn't create or manage additional state. If this function
# changes, the impact should be evaluated both against
# `iter(bar)` and `next(bar)`. `next()` in particular may call
# `self.generator()` repeatedly, and this must remain safe in
# order for that interface to work.
if not self.entered:
raise RuntimeError("You need to use progress bars in a with block.")
if not self._is_atty:
yield from self.iter
else:
for rv in self.iter:
self.current_item = rv
# This allows show_item_func to be updated before the
# item is processed. Only trigger at the beginning of
# the update interval.
if self._completed_intervals == 0:
self.render_progress()
yield rv
self.update(1)
self.finish()
self.render_progress()
def pager(generator: cabc.Iterable[str], color: bool | None = None) -> None:
"""Decide what method to use for paging through text."""
stdout = _default_text_stdout()
# There are no standard streams attached to write to. For example,
# pythonw on Windows.
if stdout is None:
stdout = StringIO()
if not isatty(sys.stdin) or not isatty(stdout):
return _nullpager(stdout, generator, color)
# Split and normalize the pager command into parts.
pager_cmd_parts = shlex.split(os.environ.get("PAGER", ""), posix=False)
if pager_cmd_parts:
if WIN:
if _tempfilepager(generator, pager_cmd_parts, color):
return
elif _pipepager(generator, pager_cmd_parts, color):
return
if os.environ.get("TERM") in ("dumb", "emacs"):
return _nullpager(stdout, generator, color)
if (WIN or sys.platform.startswith("os2")) and _tempfilepager(
generator, ["more"], color
):
return
if _pipepager(generator, ["less"], color):
return
import tempfile
fd, filename = tempfile.mkstemp()
os.close(fd)
try:
if _pipepager(generator, ["more"], color):
return
return _nullpager(stdout, generator, color)
finally:
os.unlink(filename)
def _pipepager(
generator: cabc.Iterable[str], cmd_parts: list[str], color: bool | None
) -> bool:
"""Page through text by feeding it to another program. Invoking a
pager through this might support colors.
Returns `True` if the command was found, `False` otherwise and thus another
pager should be attempted.
"""
# Split the command into the invoked CLI and its parameters.
if not cmd_parts:
return False
import shutil
cmd = cmd_parts[0]
cmd_params = cmd_parts[1:]
cmd_filepath = shutil.which(cmd)
if not cmd_filepath:
return False
# Resolves symlinks and produces a normalized absolute path string.
cmd_path = Path(cmd_filepath).resolve()
cmd_name = cmd_path.name
import subprocess
# Make a local copy of the environment to not affect the global one.
env = dict(os.environ)
# If we're piping to less and the user hasn't decided on colors, we enable
# them by default we find the -R flag in the command line arguments.
if color is None and cmd_name == "less":
less_flags = f"{os.environ.get('LESS', '')}{' '.join(cmd_params)}"
if not less_flags:
env["LESS"] = "-R"
color = True
elif "r" in less_flags or "R" in less_flags:
color = True
c = subprocess.Popen(
[str(cmd_path)] + cmd_params,
shell=True,
stdin=subprocess.PIPE,
env=env,
errors="replace",
text=True,
)
assert c.stdin is not None
try:
for text in generator:
if not color:
text = strip_ansi(text)
c.stdin.write(text)
except BrokenPipeError:
# In case the pager exited unexpectedly, ignore the broken pipe error.
pass
except Exception as e:
# In case there is an exception we want to close the pager immediately
# and let the caller handle it.
# Otherwise the pager will keep running, and the user may not notice
# the error message, or worse yet it may leave the terminal in a broken state.
c.terminate()
raise e
finally:
# We must close stdin and wait for the pager to exit before we continue
try:
c.stdin.close()
# Close implies flush, so it might throw a BrokenPipeError if the pager
# process exited already.
except BrokenPipeError:
pass
# Less doesn't respect ^C, but catches it for its own UI purposes (aborting
# search or other commands inside less).
#
# That means when the user hits ^C, the parent process (click) terminates,
# but less is still alive, paging the output and messing up the terminal.
#
# If the user wants to make the pager exit on ^C, they should set
# `LESS='-K'`. It's not our decision to make.
while True:
try:
c.wait()
except KeyboardInterrupt:
pass
else:
break
return True
def _tempfilepager(
generator: cabc.Iterable[str], cmd_parts: list[str], color: bool | None
) -> bool:
"""Page through text by invoking a program on a temporary file.
Returns `True` if the command was found, `False` otherwise and thus another
pager should be attempted.
"""
# Split the command into the invoked CLI and its parameters.
if not cmd_parts:
return False
import shutil
cmd = cmd_parts[0]
cmd_filepath = shutil.which(cmd)
if not cmd_filepath:
return False
# Resolves symlinks and produces a normalized absolute path string.
cmd_path = Path(cmd_filepath).resolve()
import subprocess
import tempfile
fd, filename = tempfile.mkstemp()
# TODO: This never terminates if the passed generator never terminates.
text = "".join(generator)
if not color:
text = strip_ansi(text)
encoding = get_best_encoding(sys.stdout)
with open_stream(filename, "wb")[0] as f:
f.write(text.encode(encoding))
try:
subprocess.call([str(cmd_path), filename])
except OSError:
# Command not found
pass
finally:
os.close(fd)
os.unlink(filename)
return True
def _nullpager(
stream: t.TextIO, generator: cabc.Iterable[str], color: bool | None
) -> None:
"""Simply print unformatted text. This is the ultimate fallback."""
for text in generator:
if not color:
text = strip_ansi(text)
stream.write(text)
class Editor:
def __init__(
self,
editor: str | None = None,
env: cabc.Mapping[str, str] | None = None,
require_save: bool = True,
extension: str = ".txt",
) -> None:
self.editor = editor
self.env = env
self.require_save = require_save
self.extension = extension
def get_editor(self) -> str:
if self.editor is not None:
return self.editor
for key in "VISUAL", "EDITOR":
rv = os.environ.get(key)
if rv:
return rv
if WIN:
return "notepad"
from shutil import which
for editor in "sensible-editor", "vim", "nano":
if which(editor) is not None:
return editor
return "vi"
def edit_files(self, filenames: cabc.Iterable[str]) -> None:
import subprocess
editor = self.get_editor()
environ: dict[str, str] | None = None
if self.env:
environ = os.environ.copy()
environ.update(self.env)
exc_filename = " ".join(f'"{filename}"' for filename in filenames)
try:
c = subprocess.Popen(
args=f"{editor} {exc_filename}", env=environ, shell=True
)
exit_code = c.wait()
if exit_code != 0:
raise ClickException(
_("{editor}: Editing failed").format(editor=editor)
)
except OSError as e:
raise ClickException(
_("{editor}: Editing failed: {e}").format(editor=editor, e=e)
) from e
@t.overload
def edit(self, text: bytes | bytearray) -> bytes | None: ...
# We cannot know whether or not the type expected is str or bytes when None
# is passed, so str is returned as that was what was done before.
@t.overload
def edit(self, text: str | None) -> str | None: ...
def edit(self, text: str | bytes | bytearray | None) -> str | bytes | None:
import tempfile
if text is None:
data: bytes | bytearray = b""
elif isinstance(text, (bytes, bytearray)):
data = text
else:
if text and not text.endswith("\n"):
text += "\n"
if WIN:
data = text.replace("\n", "\r\n").encode("utf-8-sig")
else:
data = text.encode("utf-8")
fd, name = tempfile.mkstemp(prefix="editor-", suffix=self.extension)
f: t.BinaryIO
try:
with os.fdopen(fd, "wb") as f:
f.write(data)
# If the filesystem resolution is 1 second, like Mac OS
# 10.12 Extended, or 2 seconds, like FAT32, and the editor
# closes very fast, require_save can fail. Set the modified
# time to be 2 seconds in the past to work around this.
os.utime(name, (os.path.getatime(name), os.path.getmtime(name) - 2))
# Depending on the resolution, the exact value might not be
# recorded, so get the new recorded value.
timestamp = os.path.getmtime(name)
self.edit_files((name,))
if self.require_save and os.path.getmtime(name) == timestamp:
return None
with open(name, "rb") as f:
rv = f.read()
if isinstance(text, (bytes, bytearray)):
return rv
return rv.decode("utf-8-sig").replace("\r\n", "\n")
finally:
os.unlink(name)
def open_url(url: str, wait: bool = False, locate: bool = False) -> int:
import subprocess
def _unquote_file(url: str) -> str:
from urllib.parse import unquote
if url.startswith("file://"):
url = unquote(url[7:])
return url
if sys.platform == "darwin":
args = ["open"]
if wait:
args.append("-W")
if locate:
args.append("-R")
args.append(_unquote_file(url))
null = open("/dev/null", "w")
try:
return subprocess.Popen(args, stderr=null).wait()
finally:
null.close()
elif WIN:
if locate:
url = _unquote_file(url)
args = ["explorer", f"/select,{url}"]
else:
args = ["start"]
if wait:
args.append("/WAIT")
args.append("")
args.append(url)
try:
return subprocess.call(args)
except OSError:
# Command not found
return 127
elif CYGWIN:
if locate:
url = _unquote_file(url)
args = ["cygstart", os.path.dirname(url)]
else:
args = ["cygstart"]
if wait:
args.append("-w")
args.append(url)
try:
return subprocess.call(args)
except OSError:
# Command not found
return 127
try:
if locate:
url = os.path.dirname(_unquote_file(url)) or "."
else:
url = _unquote_file(url)
c = subprocess.Popen(["xdg-open", url])
if wait:
return c.wait()
return 0
except OSError:
if url.startswith(("http://", "https://")) and not locate and not wait:
import webbrowser
webbrowser.open(url)
return 0
return 1
def _translate_ch_to_exc(ch: str) -> None:
if ch == "\x03":
raise KeyboardInterrupt()
if ch == "\x04" and not WIN: # Unix-like, Ctrl+D
raise EOFError()
if ch == "\x1a" and WIN: # Windows, Ctrl+Z
raise EOFError()
return None
if sys.platform == "win32":
import msvcrt
@contextlib.contextmanager
def raw_terminal() -> cabc.Iterator[int]:
yield -1
def getchar(echo: bool) -> str:
# The function `getch` will return a bytes object corresponding to
# the pressed character. Since Windows 10 build 1803, it will also
# return \x00 when called a second time after pressing a regular key.
#
# `getwch` does not share this probably-bugged behavior. Moreover, it
# returns a Unicode object by default, which is what we want.
#
# Either of these functions will return \x00 or \xe0 to indicate
# a special key, and you need to call the same function again to get
# the "rest" of the code. The fun part is that \u00e0 is
# "latin small letter a with grave", so if you type that on a French
# keyboard, you _also_ get a \xe0.
# E.g., consider the Up arrow. This returns \xe0 and then \x48. The
# resulting Unicode string reads as "a with grave" + "capital H".
# This is indistinguishable from when the user actually types
# "a with grave" and then "capital H".
#
# When \xe0 is returned, we assume it's part of a special-key sequence
# and call `getwch` again, but that means that when the user types
# the \u00e0 character, `getchar` doesn't return until a second
# character is typed.
# The alternative is returning immediately, but that would mess up
# cross-platform handling of arrow keys and others that start with
# \xe0. Another option is using `getch`, but then we can't reliably
# read non-ASCII characters, because return values of `getch` are
# limited to the current 8-bit codepage.
#
# Anyway, Click doesn't claim to do this Right(tm), and using `getwch`
# is doing the right thing in more situations than with `getch`.
if echo:
func = t.cast(t.Callable[[], str], msvcrt.getwche)
else:
func = t.cast(t.Callable[[], str], msvcrt.getwch)
rv = func()
if rv in ("\x00", "\xe0"):
# \x00 and \xe0 are control characters that indicate special key,
# see above.
rv += func()
_translate_ch_to_exc(rv)
return rv
else:
import termios
import tty
@contextlib.contextmanager
def raw_terminal() -> cabc.Iterator[int]:
f: t.TextIO | None
fd: int
if not isatty(sys.stdin):
f = open("/dev/tty")
fd = f.fileno()
else:
fd = sys.stdin.fileno()
f = None
try:
old_settings = termios.tcgetattr(fd)
try:
tty.setraw(fd)
yield fd
finally:
termios.tcsetattr(fd, termios.TCSADRAIN, old_settings)
sys.stdout.flush()
if f is not None:
f.close()
except termios.error:
pass
def getchar(echo: bool) -> str:
with raw_terminal() as fd:
ch = os.read(fd, 32).decode(get_best_encoding(sys.stdin), "replace")
if echo and isatty(sys.stdout):
sys.stdout.write(ch)
_translate_ch_to_exc(ch)
return ch

51
venv/lib/python3.12/site-packages/click/_textwrap.py Normal file
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from __future__ import annotations
import collections.abc as cabc
import textwrap
from contextlib import contextmanager
class TextWrapper(textwrap.TextWrapper):
def _handle_long_word(
self,
reversed_chunks: list[str],
cur_line: list[str],
cur_len: int,
width: int,
) -> None:
space_left = max(width - cur_len, 1)
if self.break_long_words:
last = reversed_chunks[-1]
cut = last[:space_left]
res = last[space_left:]
cur_line.append(cut)
reversed_chunks[-1] = res
elif not cur_line:
cur_line.append(reversed_chunks.pop())
@contextmanager
def extra_indent(self, indent: str) -> cabc.Iterator[None]:
old_initial_indent = self.initial_indent
old_subsequent_indent = self.subsequent_indent
self.initial_indent += indent
self.subsequent_indent += indent
try:
yield
finally:
self.initial_indent = old_initial_indent
self.subsequent_indent = old_subsequent_indent
def indent_only(self, text: str) -> str:
rv = []
for idx, line in enumerate(text.splitlines()):
indent = self.initial_indent
if idx > 0:
indent = self.subsequent_indent
rv.append(f"{indent}{line}")
return "\n".join(rv)

36
venv/lib/python3.12/site-packages/click/_utils.py Normal file
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@@ -0,0 +1,36 @@
from __future__ import annotations
import enum
import typing as t
class Sentinel(enum.Enum):
"""Enum used to define sentinel values.
.. seealso::
`PEP 661 - Sentinel Values <https://peps.python.org/pep-0661/>`_.
"""
UNSET = object()
FLAG_NEEDS_VALUE = object()
def __repr__(self) -> str:
return f"{self.__class__.__name__}.{self.name}"
UNSET = Sentinel.UNSET
"""Sentinel used to indicate that a value is not set."""
FLAG_NEEDS_VALUE = Sentinel.FLAG_NEEDS_VALUE
"""Sentinel used to indicate an option was passed as a flag without a
value but is not a flag option.
``Option.consume_value`` uses this to prompt or use the ``flag_value``.
"""
T_UNSET = t.Literal[UNSET] # type: ignore[valid-type]
"""Type hint for the :data:`UNSET` sentinel value."""
T_FLAG_NEEDS_VALUE = t.Literal[FLAG_NEEDS_VALUE] # type: ignore[valid-type]
"""Type hint for the :data:`FLAG_NEEDS_VALUE` sentinel value."""

296
venv/lib/python3.12/site-packages/click/_winconsole.py Normal file
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@@ -0,0 +1,296 @@
# This module is based on the excellent work by Adam Bartoš who
# provided a lot of what went into the implementation here in
# the discussion to issue1602 in the Python bug tracker.
#
# There are some general differences in regards to how this works
# compared to the original patches as we do not need to patch
# the entire interpreter but just work in our little world of
# echo and prompt.
from __future__ import annotations
import collections.abc as cabc
import io
import sys
import time
import typing as t
from ctypes import Array
from ctypes import byref
from ctypes import c_char
from ctypes import c_char_p
from ctypes import c_int
from ctypes import c_ssize_t
from ctypes import c_ulong
from ctypes import c_void_p
from ctypes import POINTER
from ctypes import py_object
from ctypes import Structure
from ctypes.wintypes import DWORD
from ctypes.wintypes import HANDLE
from ctypes.wintypes import LPCWSTR
from ctypes.wintypes import LPWSTR
from ._compat import _NonClosingTextIOWrapper
assert sys.platform == "win32"
import msvcrt # noqa: E402
from ctypes import windll # noqa: E402
from ctypes import WINFUNCTYPE # noqa: E402
c_ssize_p = POINTER(c_ssize_t)
kernel32 = windll.kernel32
GetStdHandle = kernel32.GetStdHandle
ReadConsoleW = kernel32.ReadConsoleW
WriteConsoleW = kernel32.WriteConsoleW
GetConsoleMode = kernel32.GetConsoleMode
GetLastError = kernel32.GetLastError
GetCommandLineW = WINFUNCTYPE(LPWSTR)(("GetCommandLineW", windll.kernel32))
CommandLineToArgvW = WINFUNCTYPE(POINTER(LPWSTR), LPCWSTR, POINTER(c_int))(
("CommandLineToArgvW", windll.shell32)
)
LocalFree = WINFUNCTYPE(c_void_p, c_void_p)(("LocalFree", windll.kernel32))
STDIN_HANDLE = GetStdHandle(-10)
STDOUT_HANDLE = GetStdHandle(-11)
STDERR_HANDLE = GetStdHandle(-12)
PyBUF_SIMPLE = 0
PyBUF_WRITABLE = 1
ERROR_SUCCESS = 0
ERROR_NOT_ENOUGH_MEMORY = 8
ERROR_OPERATION_ABORTED = 995
STDIN_FILENO = 0
STDOUT_FILENO = 1
STDERR_FILENO = 2
EOF = b"\x1a"
MAX_BYTES_WRITTEN = 32767
if t.TYPE_CHECKING:
try:
# Using `typing_extensions.Buffer` instead of `collections.abc`
# on Windows for some reason does not have `Sized` implemented.
from collections.abc import Buffer # type: ignore
except ImportError:
from typing_extensions import Buffer
try:
from ctypes import pythonapi
except ImportError:
# On PyPy we cannot get buffers so our ability to operate here is
# severely limited.
get_buffer = None
else:
class Py_buffer(Structure):
_fields_ = [ # noqa: RUF012
("buf", c_void_p),
("obj", py_object),
("len", c_ssize_t),
("itemsize", c_ssize_t),
("readonly", c_int),
("ndim", c_int),
("format", c_char_p),
("shape", c_ssize_p),
("strides", c_ssize_p),
("suboffsets", c_ssize_p),
("internal", c_void_p),
]
PyObject_GetBuffer = pythonapi.PyObject_GetBuffer
PyBuffer_Release = pythonapi.PyBuffer_Release
def get_buffer(obj: Buffer, writable: bool = False) -> Array[c_char]:
buf = Py_buffer()
flags: int = PyBUF_WRITABLE if writable else PyBUF_SIMPLE
PyObject_GetBuffer(py_object(obj), byref(buf), flags)
try:
buffer_type = c_char * buf.len
out: Array[c_char] = buffer_type.from_address(buf.buf)
return out
finally:
PyBuffer_Release(byref(buf))
class _WindowsConsoleRawIOBase(io.RawIOBase):
def __init__(self, handle: int | None) -> None:
self.handle = handle
def isatty(self) -> t.Literal[True]:
super().isatty()
return True
class _WindowsConsoleReader(_WindowsConsoleRawIOBase):
def readable(self) -> t.Literal[True]:
return True
def readinto(self, b: Buffer) -> int:
bytes_to_be_read = len(b)
if not bytes_to_be_read:
return 0
elif bytes_to_be_read % 2:
raise ValueError(
"cannot read odd number of bytes from UTF-16-LE encoded console"
)
buffer = get_buffer(b, writable=True)
code_units_to_be_read = bytes_to_be_read // 2
code_units_read = c_ulong()
rv = ReadConsoleW(
HANDLE(self.handle),
buffer,
code_units_to_be_read,
byref(code_units_read),
None,
)
if GetLastError() == ERROR_OPERATION_ABORTED:
# wait for KeyboardInterrupt
time.sleep(0.1)
if not rv:
raise OSError(f"Windows error: {GetLastError()}")
if buffer[0] == EOF:
return 0
return 2 * code_units_read.value
class _WindowsConsoleWriter(_WindowsConsoleRawIOBase):
def writable(self) -> t.Literal[True]:
return True
@staticmethod
def _get_error_message(errno: int) -> str:
if errno == ERROR_SUCCESS:
return "ERROR_SUCCESS"
elif errno == ERROR_NOT_ENOUGH_MEMORY:
return "ERROR_NOT_ENOUGH_MEMORY"
return f"Windows error {errno}"
def write(self, b: Buffer) -> int:
bytes_to_be_written = len(b)
buf = get_buffer(b)
code_units_to_be_written = min(bytes_to_be_written, MAX_BYTES_WRITTEN) // 2
code_units_written = c_ulong()
WriteConsoleW(
HANDLE(self.handle),
buf,
code_units_to_be_written,
byref(code_units_written),
None,
)
bytes_written = 2 * code_units_written.value
if bytes_written == 0 and bytes_to_be_written > 0:
raise OSError(self._get_error_message(GetLastError()))
return bytes_written
class ConsoleStream:
def __init__(self, text_stream: t.TextIO, byte_stream: t.BinaryIO) -> None:
self._text_stream = text_stream
self.buffer = byte_stream
@property
def name(self) -> str:
return self.buffer.name
def write(self, x: t.AnyStr) -> int:
if isinstance(x, str):
return self._text_stream.write(x)
try:
self.flush()
except Exception:
pass
return self.buffer.write(x)
def writelines(self, lines: cabc.Iterable[t.AnyStr]) -> None:
for line in lines:
self.write(line)
def __getattr__(self, name: str) -> t.Any:
return getattr(self._text_stream, name)
def isatty(self) -> bool:
return self.buffer.isatty()
def __repr__(self) -> str:
return f"<ConsoleStream name={self.name!r} encoding={self.encoding!r}>"
def _get_text_stdin(buffer_stream: t.BinaryIO) -> t.TextIO:
text_stream = _NonClosingTextIOWrapper(
io.BufferedReader(_WindowsConsoleReader(STDIN_HANDLE)),
"utf-16-le",
"strict",
line_buffering=True,
)
return t.cast(t.TextIO, ConsoleStream(text_stream, buffer_stream))
def _get_text_stdout(buffer_stream: t.BinaryIO) -> t.TextIO:
text_stream = _NonClosingTextIOWrapper(
io.BufferedWriter(_WindowsConsoleWriter(STDOUT_HANDLE)),
"utf-16-le",
"strict",
line_buffering=True,
)
return t.cast(t.TextIO, ConsoleStream(text_stream, buffer_stream))
def _get_text_stderr(buffer_stream: t.BinaryIO) -> t.TextIO:
text_stream = _NonClosingTextIOWrapper(
io.BufferedWriter(_WindowsConsoleWriter(STDERR_HANDLE)),
"utf-16-le",
"strict",
line_buffering=True,
)
return t.cast(t.TextIO, ConsoleStream(text_stream, buffer_stream))
_stream_factories: cabc.Mapping[int, t.Callable[[t.BinaryIO], t.TextIO]] = {
0: _get_text_stdin,
1: _get_text_stdout,
2: _get_text_stderr,
}
def _is_console(f: t.TextIO) -> bool:
if not hasattr(f, "fileno"):
return False
try:
fileno = f.fileno()
except (OSError, io.UnsupportedOperation):
return False
handle = msvcrt.get_osfhandle(fileno)
return bool(GetConsoleMode(handle, byref(DWORD())))
def _get_windows_console_stream(
f: t.TextIO, encoding: str | None, errors: str | None
) -> t.TextIO | None:
if (
get_buffer is None
or encoding not in {"utf-16-le", None}
or errors not in {"strict", None}
or not _is_console(f)
):
return None
func = _stream_factories.get(f.fileno())
if func is None:
return None
b = getattr(f, "buffer", None)
if b is None:
return None
return func(b)

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from __future__ import annotations
import inspect
import typing as t
from functools import update_wrapper
from gettext import gettext as _
from .core import Argument
from .core import Command
from .core import Context
from .core import Group
from .core import Option
from .core import Parameter
from .globals import get_current_context
from .utils import echo
if t.TYPE_CHECKING:
import typing_extensions as te
P = te.ParamSpec("P")
R = t.TypeVar("R")
T = t.TypeVar("T")
_AnyCallable = t.Callable[..., t.Any]
FC = t.TypeVar("FC", bound="_AnyCallable | Command")
def pass_context(f: t.Callable[te.Concatenate[Context, P], R]) -> t.Callable[P, R]:
"""Marks a callback as wanting to receive the current context
object as first argument.
"""
def new_func(*args: P.args, **kwargs: P.kwargs) -> R:
return f(get_current_context(), *args, **kwargs)
return update_wrapper(new_func, f)
def pass_obj(f: t.Callable[te.Concatenate[T, P], R]) -> t.Callable[P, R]:
"""Similar to :func:`pass_context`, but only pass the object on the
context onwards (:attr:`Context.obj`). This is useful if that object
represents the state of a nested system.
"""
def new_func(*args: P.args, **kwargs: P.kwargs) -> R:
return f(get_current_context().obj, *args, **kwargs)
return update_wrapper(new_func, f)
def make_pass_decorator(
object_type: type[T], ensure: bool = False
) -> t.Callable[[t.Callable[te.Concatenate[T, P], R]], t.Callable[P, R]]:
"""Given an object type this creates a decorator that will work
similar to :func:`pass_obj` but instead of passing the object of the
current context, it will find the innermost context of type
:func:`object_type`.
This generates a decorator that works roughly like this::
from functools import update_wrapper
def decorator(f):
@pass_context
def new_func(ctx, *args, **kwargs):
obj = ctx.find_object(object_type)
return ctx.invoke(f, obj, *args, **kwargs)
return update_wrapper(new_func, f)
return decorator
:param object_type: the type of the object to pass.
:param ensure: if set to `True`, a new object will be created and
remembered on the context if it's not there yet.
"""
def decorator(f: t.Callable[te.Concatenate[T, P], R]) -> t.Callable[P, R]:
def new_func(*args: P.args, **kwargs: P.kwargs) -> R:
ctx = get_current_context()
obj: T | None
if ensure:
obj = ctx.ensure_object(object_type)
else:
obj = ctx.find_object(object_type)
if obj is None:
raise RuntimeError(
"Managed to invoke callback without a context"
f" object of type {object_type.__name__!r}"
" existing."
)
return ctx.invoke(f, obj, *args, **kwargs)
return update_wrapper(new_func, f)
return decorator
def pass_meta_key(
key: str, *, doc_description: str | None = None
) -> t.Callable[[t.Callable[te.Concatenate[T, P], R]], t.Callable[P, R]]:
"""Create a decorator that passes a key from
:attr:`click.Context.meta` as the first argument to the decorated
function.
:param key: Key in ``Context.meta`` to pass.
:param doc_description: Description of the object being passed,
inserted into the decorator's docstring. Defaults to "the 'key'
key from Context.meta".
.. versionadded:: 8.0
"""
def decorator(f: t.Callable[te.Concatenate[T, P], R]) -> t.Callable[P, R]:
def new_func(*args: P.args, **kwargs: P.kwargs) -> R:
ctx = get_current_context()
obj = ctx.meta[key]
return ctx.invoke(f, obj, *args, **kwargs)
return update_wrapper(new_func, f)
if doc_description is None:
doc_description = f"the {key!r} key from :attr:`click.Context.meta`"
decorator.__doc__ = (
f"Decorator that passes {doc_description} as the first argument"
" to the decorated function."
)
return decorator
CmdType = t.TypeVar("CmdType", bound=Command)
# variant: no call, directly as decorator for a function.
@t.overload
def command(name: _AnyCallable) -> Command: ...
# variant: with positional name and with positional or keyword cls argument:
# @command(namearg, CommandCls, ...) or @command(namearg, cls=CommandCls, ...)
@t.overload
def command(
name: str | None,
cls: type[CmdType],
**attrs: t.Any,
) -> t.Callable[[_AnyCallable], CmdType]: ...
# variant: name omitted, cls _must_ be a keyword argument, @command(cls=CommandCls, ...)
@t.overload
def command(
name: None = None,
*,
cls: type[CmdType],
**attrs: t.Any,
) -> t.Callable[[_AnyCallable], CmdType]: ...
# variant: with optional string name, no cls argument provided.
@t.overload
def command(
name: str | None = ..., cls: None = None, **attrs: t.Any
) -> t.Callable[[_AnyCallable], Command]: ...
def command(
name: str | _AnyCallable | None = None,
cls: type[CmdType] | None = None,
**attrs: t.Any,
) -> Command | t.Callable[[_AnyCallable], Command | CmdType]:
r"""Creates a new :class:`Command` and uses the decorated function as
callback. This will also automatically attach all decorated
:func:`option`\s and :func:`argument`\s as parameters to the command.
The name of the command defaults to the name of the function, converted to
lowercase, with underscores ``_`` replaced by dashes ``-``, and the suffixes
``_command``, ``_cmd``, ``_group``, and ``_grp`` are removed. For example,
``init_data_command`` becomes ``init-data``.
All keyword arguments are forwarded to the underlying command class.
For the ``params`` argument, any decorated params are appended to
the end of the list.
Once decorated the function turns into a :class:`Command` instance
that can be invoked as a command line utility or be attached to a
command :class:`Group`.
:param name: The name of the command. Defaults to modifying the function's
name as described above.
:param cls: The command class to create. Defaults to :class:`Command`.
.. versionchanged:: 8.2
The suffixes ``_command``, ``_cmd``, ``_group``, and ``_grp`` are
removed when generating the name.
.. versionchanged:: 8.1
This decorator can be applied without parentheses.
.. versionchanged:: 8.1
The ``params`` argument can be used. Decorated params are
appended to the end of the list.
"""
func: t.Callable[[_AnyCallable], t.Any] | None = None
if callable(name):
func = name
name = None
assert cls is None, "Use 'command(cls=cls)(callable)' to specify a class."
assert not attrs, "Use 'command(**kwargs)(callable)' to provide arguments."
if cls is None:
cls = t.cast("type[CmdType]", Command)
def decorator(f: _AnyCallable) -> CmdType:
if isinstance(f, Command):
raise TypeError("Attempted to convert a callback into a command twice.")
attr_params = attrs.pop("params", None)
params = attr_params if attr_params is not None else []
try:
decorator_params = f.__click_params__ # type: ignore
except AttributeError:
pass
else:
del f.__click_params__ # type: ignore
params.extend(reversed(decorator_params))
if attrs.get("help") is None:
attrs["help"] = f.__doc__
if t.TYPE_CHECKING:
assert cls is not None
assert not callable(name)
if name is not None:
cmd_name = name
else:
cmd_name = f.__name__.lower().replace("_", "-")
cmd_left, sep, suffix = cmd_name.rpartition("-")
if sep and suffix in {"command", "cmd", "group", "grp"}:
cmd_name = cmd_left
cmd = cls(name=cmd_name, callback=f, params=params, **attrs)
cmd.__doc__ = f.__doc__
return cmd
if func is not None:
return decorator(func)
return decorator
GrpType = t.TypeVar("GrpType", bound=Group)
# variant: no call, directly as decorator for a function.
@t.overload
def group(name: _AnyCallable) -> Group: ...
# variant: with positional name and with positional or keyword cls argument:
# @group(namearg, GroupCls, ...) or @group(namearg, cls=GroupCls, ...)
@t.overload
def group(
name: str | None,
cls: type[GrpType],
**attrs: t.Any,
) -> t.Callable[[_AnyCallable], GrpType]: ...
# variant: name omitted, cls _must_ be a keyword argument, @group(cmd=GroupCls, ...)
@t.overload
def group(
name: None = None,
*,
cls: type[GrpType],
**attrs: t.Any,
) -> t.Callable[[_AnyCallable], GrpType]: ...
# variant: with optional string name, no cls argument provided.
@t.overload
def group(
name: str | None = ..., cls: None = None, **attrs: t.Any
) -> t.Callable[[_AnyCallable], Group]: ...
def group(
name: str | _AnyCallable | None = None,
cls: type[GrpType] | None = None,
**attrs: t.Any,
) -> Group | t.Callable[[_AnyCallable], Group | GrpType]:
"""Creates a new :class:`Group` with a function as callback. This
works otherwise the same as :func:`command` just that the `cls`
parameter is set to :class:`Group`.
.. versionchanged:: 8.1
This decorator can be applied without parentheses.
"""
if cls is None:
cls = t.cast("type[GrpType]", Group)
if callable(name):
return command(cls=cls, **attrs)(name)
return command(name, cls, **attrs)
def _param_memo(f: t.Callable[..., t.Any], param: Parameter) -> None:
if isinstance(f, Command):
f.params.append(param)
else:
if not hasattr(f, "__click_params__"):
f.__click_params__ = [] # type: ignore
f.__click_params__.append(param) # type: ignore
def argument(
*param_decls: str, cls: type[Argument] | None = None, **attrs: t.Any
) -> t.Callable[[FC], FC]:
"""Attaches an argument to the command. All positional arguments are
passed as parameter declarations to :class:`Argument`; all keyword
arguments are forwarded unchanged (except ``cls``).
This is equivalent to creating an :class:`Argument` instance manually
and attaching it to the :attr:`Command.params` list.
For the default argument class, refer to :class:`Argument` and
:class:`Parameter` for descriptions of parameters.
:param cls: the argument class to instantiate. This defaults to
:class:`Argument`.
:param param_decls: Passed as positional arguments to the constructor of
``cls``.
:param attrs: Passed as keyword arguments to the constructor of ``cls``.
"""
if cls is None:
cls = Argument
def decorator(f: FC) -> FC:
_param_memo(f, cls(param_decls, **attrs))
return f
return decorator
def option(
*param_decls: str, cls: type[Option] | None = None, **attrs: t.Any
) -> t.Callable[[FC], FC]:
"""Attaches an option to the command. All positional arguments are
passed as parameter declarations to :class:`Option`; all keyword
arguments are forwarded unchanged (except ``cls``).
This is equivalent to creating an :class:`Option` instance manually
and attaching it to the :attr:`Command.params` list.
For the default option class, refer to :class:`Option` and
:class:`Parameter` for descriptions of parameters.
:param cls: the option class to instantiate. This defaults to
:class:`Option`.
:param param_decls: Passed as positional arguments to the constructor of
``cls``.
:param attrs: Passed as keyword arguments to the constructor of ``cls``.
"""
if cls is None:
cls = Option
def decorator(f: FC) -> FC:
_param_memo(f, cls(param_decls, **attrs))
return f
return decorator
def confirmation_option(*param_decls: str, **kwargs: t.Any) -> t.Callable[[FC], FC]:
"""Add a ``--yes`` option which shows a prompt before continuing if
not passed. If the prompt is declined, the program will exit.
:param param_decls: One or more option names. Defaults to the single
value ``"--yes"``.
:param kwargs: Extra arguments are passed to :func:`option`.
"""
def callback(ctx: Context, param: Parameter, value: bool) -> None:
if not value:
ctx.abort()
if not param_decls:
param_decls = ("--yes",)
kwargs.setdefault("is_flag", True)
kwargs.setdefault("callback", callback)
kwargs.setdefault("expose_value", False)
kwargs.setdefault("prompt", "Do you want to continue?")
kwargs.setdefault("help", "Confirm the action without prompting.")
return option(*param_decls, **kwargs)
def password_option(*param_decls: str, **kwargs: t.Any) -> t.Callable[[FC], FC]:
"""Add a ``--password`` option which prompts for a password, hiding
input and asking to enter the value again for confirmation.
:param param_decls: One or more option names. Defaults to the single
value ``"--password"``.
:param kwargs: Extra arguments are passed to :func:`option`.
"""
if not param_decls:
param_decls = ("--password",)
kwargs.setdefault("prompt", True)
kwargs.setdefault("confirmation_prompt", True)
kwargs.setdefault("hide_input", True)
return option(*param_decls, **kwargs)
def version_option(
version: str | None = None,
*param_decls: str,
package_name: str | None = None,
prog_name: str | None = None,
message: str | None = None,
**kwargs: t.Any,
) -> t.Callable[[FC], FC]:
"""Add a ``--version`` option which immediately prints the version
number and exits the program.
If ``version`` is not provided, Click will try to detect it using
:func:`importlib.metadata.version` to get the version for the
``package_name``.
If ``package_name`` is not provided, Click will try to detect it by
inspecting the stack frames. This will be used to detect the
version, so it must match the name of the installed package.
:param version: The version number to show. If not provided, Click
will try to detect it.
:param param_decls: One or more option names. Defaults to the single
value ``"--version"``.
:param package_name: The package name to detect the version from. If
not provided, Click will try to detect it.
:param prog_name: The name of the CLI to show in the message. If not
provided, it will be detected from the command.
:param message: The message to show. The values ``%(prog)s``,
``%(package)s``, and ``%(version)s`` are available. Defaults to
``"%(prog)s, version %(version)s"``.
:param kwargs: Extra arguments are passed to :func:`option`.
:raise RuntimeError: ``version`` could not be detected.
.. versionchanged:: 8.0
Add the ``package_name`` parameter, and the ``%(package)s``
value for messages.
.. versionchanged:: 8.0
Use :mod:`importlib.metadata` instead of ``pkg_resources``. The
version is detected based on the package name, not the entry
point name. The Python package name must match the installed
package name, or be passed with ``package_name=``.
"""
if message is None:
message = _("%(prog)s, version %(version)s")
if version is None and package_name is None:
frame = inspect.currentframe()
f_back = frame.f_back if frame is not None else None
f_globals = f_back.f_globals if f_back is not None else None
# break reference cycle
# https://docs.python.org/3/library/inspect.html#the-interpreter-stack
del frame
if f_globals is not None:
package_name = f_globals.get("__name__")
if package_name == "__main__":
package_name = f_globals.get("__package__")
if package_name:
package_name = package_name.partition(".")[0]
def callback(ctx: Context, param: Parameter, value: bool) -> None:
if not value or ctx.resilient_parsing:
return
nonlocal prog_name
nonlocal version
if prog_name is None:
prog_name = ctx.find_root().info_name
if version is None and package_name is not None:
import importlib.metadata
try:
version = importlib.metadata.version(package_name)
except importlib.metadata.PackageNotFoundError:
raise RuntimeError(
f"{package_name!r} is not installed. Try passing"
" 'package_name' instead."
) from None
if version is None:
raise RuntimeError(
f"Could not determine the version for {package_name!r} automatically."
)
echo(
message % {"prog": prog_name, "package": package_name, "version": version},
color=ctx.color,
)
ctx.exit()
if not param_decls:
param_decls = ("--version",)
kwargs.setdefault("is_flag", True)
kwargs.setdefault("expose_value", False)
kwargs.setdefault("is_eager", True)
kwargs.setdefault("help", _("Show the version and exit."))
kwargs["callback"] = callback
return option(*param_decls, **kwargs)
def help_option(*param_decls: str, **kwargs: t.Any) -> t.Callable[[FC], FC]:
"""Pre-configured ``--help`` option which immediately prints the help page
and exits the program.
:param param_decls: One or more option names. Defaults to the single
value ``"--help"``.
:param kwargs: Extra arguments are passed to :func:`option`.
"""
def show_help(ctx: Context, param: Parameter, value: bool) -> None:
"""Callback that print the help page on ``<stdout>`` and exits."""
if value and not ctx.resilient_parsing:
echo(ctx.get_help(), color=ctx.color)
ctx.exit()
if not param_decls:
param_decls = ("--help",)
kwargs.setdefault("is_flag", True)
kwargs.setdefault("expose_value", False)
kwargs.setdefault("is_eager", True)
kwargs.setdefault("help", _("Show this message and exit."))
kwargs.setdefault("callback", show_help)
return option(*param_decls, **kwargs)

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from __future__ import annotations
import collections.abc as cabc
import typing as t
from gettext import gettext as _
from gettext import ngettext
from ._compat import get_text_stderr
from .globals import resolve_color_default
from .utils import echo
from .utils import format_filename
if t.TYPE_CHECKING:
from .core import Command
from .core import Context
from .core import Parameter
def _join_param_hints(param_hint: cabc.Sequence[str] | str | None) -> str | None:
if param_hint is not None and not isinstance(param_hint, str):
return " / ".join(repr(x) for x in param_hint)
return param_hint
class ClickException(Exception):
"""An exception that Click can handle and show to the user."""
#: The exit code for this exception.
exit_code = 1
def __init__(self, message: str) -> None:
super().__init__(message)
# The context will be removed by the time we print the message, so cache
# the color settings here to be used later on (in `show`)
self.show_color: bool | None = resolve_color_default()
self.message = message
def format_message(self) -> str:
return self.message
def __str__(self) -> str:
return self.message
def show(self, file: t.IO[t.Any] | None = None) -> None:
if file is None:
file = get_text_stderr()
echo(
_("Error: {message}").format(message=self.format_message()),
file=file,
color=self.show_color,
)
class UsageError(ClickException):
"""An internal exception that signals a usage error. This typically
aborts any further handling.
:param message: the error message to display.
:param ctx: optionally the context that caused this error. Click will
fill in the context automatically in some situations.
"""
exit_code = 2
def __init__(self, message: str, ctx: Context | None = None) -> None:
super().__init__(message)
self.ctx = ctx
self.cmd: Command | None = self.ctx.command if self.ctx else None
def show(self, file: t.IO[t.Any] | None = None) -> None:
if file is None:
file = get_text_stderr()
color = None
hint = ""
if (
self.ctx is not None
and self.ctx.command.get_help_option(self.ctx) is not None
):
hint = _("Try '{command} {option}' for help.").format(
command=self.ctx.command_path, option=self.ctx.help_option_names[0]
)
hint = f"{hint}\n"
if self.ctx is not None:
color = self.ctx.color
echo(f"{self.ctx.get_usage()}\n{hint}", file=file, color=color)
echo(
_("Error: {message}").format(message=self.format_message()),
file=file,
color=color,
)
class BadParameter(UsageError):
"""An exception that formats out a standardized error message for a
bad parameter. This is useful when thrown from a callback or type as
Click will attach contextual information to it (for instance, which
parameter it is).
.. versionadded:: 2.0
:param param: the parameter object that caused this error. This can
be left out, and Click will attach this info itself
if possible.
:param param_hint: a string that shows up as parameter name. This
can be used as alternative to `param` in cases
where custom validation should happen. If it is
a string it's used as such, if it's a list then
each item is quoted and separated.
"""
def __init__(
self,
message: str,
ctx: Context | None = None,
param: Parameter | None = None,
param_hint: cabc.Sequence[str] | str | None = None,
) -> None:
super().__init__(message, ctx)
self.param = param
self.param_hint = param_hint
def format_message(self) -> str:
if self.param_hint is not None:
param_hint = self.param_hint
elif self.param is not None:
param_hint = self.param.get_error_hint(self.ctx) # type: ignore
else:
return _("Invalid value: {message}").format(message=self.message)
return _("Invalid value for {param_hint}: {message}").format(
param_hint=_join_param_hints(param_hint), message=self.message
)
class MissingParameter(BadParameter):
"""Raised if click required an option or argument but it was not
provided when invoking the script.
.. versionadded:: 4.0
:param param_type: a string that indicates the type of the parameter.
The default is to inherit the parameter type from
the given `param`. Valid values are ``'parameter'``,
``'option'`` or ``'argument'``.
"""
def __init__(
self,
message: str | None = None,
ctx: Context | None = None,
param: Parameter | None = None,
param_hint: cabc.Sequence[str] | str | None = None,
param_type: str | None = None,
) -> None:
super().__init__(message or "", ctx, param, param_hint)
self.param_type = param_type
def format_message(self) -> str:
if self.param_hint is not None:
param_hint: cabc.Sequence[str] | str | None = self.param_hint
elif self.param is not None:
param_hint = self.param.get_error_hint(self.ctx) # type: ignore
else:
param_hint = None
param_hint = _join_param_hints(param_hint)
param_hint = f" {param_hint}" if param_hint else ""
param_type = self.param_type
if param_type is None and self.param is not None:
param_type = self.param.param_type_name
msg = self.message
if self.param is not None:
msg_extra = self.param.type.get_missing_message(
param=self.param, ctx=self.ctx
)
if msg_extra:
if msg:
msg += f". {msg_extra}"
else:
msg = msg_extra
msg = f" {msg}" if msg else ""
# Translate param_type for known types.
if param_type == "argument":
missing = _("Missing argument")
elif param_type == "option":
missing = _("Missing option")
elif param_type == "parameter":
missing = _("Missing parameter")
else:
missing = _("Missing {param_type}").format(param_type=param_type)
return f"{missing}{param_hint}.{msg}"
def __str__(self) -> str:
if not self.message:
param_name = self.param.name if self.param else None
return _("Missing parameter: {param_name}").format(param_name=param_name)
else:
return self.message
class NoSuchOption(UsageError):
"""Raised if click attempted to handle an option that does not
exist.
.. versionadded:: 4.0
"""
def __init__(
self,
option_name: str,
message: str | None = None,
possibilities: cabc.Sequence[str] | None = None,
ctx: Context | None = None,
) -> None:
if message is None:
message = _("No such option: {name}").format(name=option_name)
super().__init__(message, ctx)
self.option_name = option_name
self.possibilities = possibilities
def format_message(self) -> str:
if not self.possibilities:
return self.message
possibility_str = ", ".join(sorted(self.possibilities))
suggest = ngettext(
"Did you mean {possibility}?",
"(Possible options: {possibilities})",
len(self.possibilities),
).format(possibility=possibility_str, possibilities=possibility_str)
return f"{self.message} {suggest}"
class BadOptionUsage(UsageError):
"""Raised if an option is generally supplied but the use of the option
was incorrect. This is for instance raised if the number of arguments
for an option is not correct.
.. versionadded:: 4.0
:param option_name: the name of the option being used incorrectly.
"""
def __init__(
self, option_name: str, message: str, ctx: Context | None = None
) -> None:
super().__init__(message, ctx)
self.option_name = option_name
class BadArgumentUsage(UsageError):
"""Raised if an argument is generally supplied but the use of the argument
was incorrect. This is for instance raised if the number of values
for an argument is not correct.
.. versionadded:: 6.0
"""
class NoArgsIsHelpError(UsageError):
def __init__(self, ctx: Context) -> None:
self.ctx: Context
super().__init__(ctx.get_help(), ctx=ctx)
def show(self, file: t.IO[t.Any] | None = None) -> None:
echo(self.format_message(), file=file, err=True, color=self.ctx.color)
class FileError(ClickException):
"""Raised if a file cannot be opened."""
def __init__(self, filename: str, hint: str | None = None) -> None:
if hint is None:
hint = _("unknown error")
super().__init__(hint)
self.ui_filename: str = format_filename(filename)
self.filename = filename
def format_message(self) -> str:
return _("Could not open file {filename!r}: {message}").format(
filename=self.ui_filename, message=self.message
)
class Abort(RuntimeError):
"""An internal signalling exception that signals Click to abort."""
class Exit(RuntimeError):
"""An exception that indicates that the application should exit with some
status code.
:param code: the status code to exit with.
"""
__slots__ = ("exit_code",)
def __init__(self, code: int = 0) -> None:
self.exit_code: int = code

301
venv/lib/python3.12/site-packages/click/formatting.py Normal file
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from __future__ import annotations
import collections.abc as cabc
from contextlib import contextmanager
from gettext import gettext as _
from ._compat import term_len
from .parser import _split_opt
# Can force a width. This is used by the test system
FORCED_WIDTH: int | None = None
def measure_table(rows: cabc.Iterable[tuple[str, str]]) -> tuple[int, ...]:
widths: dict[int, int] = {}
for row in rows:
for idx, col in enumerate(row):
widths[idx] = max(widths.get(idx, 0), term_len(col))
return tuple(y for x, y in sorted(widths.items()))
def iter_rows(
rows: cabc.Iterable[tuple[str, str]], col_count: int
) -> cabc.Iterator[tuple[str, ...]]:
for row in rows:
yield row + ("",) * (col_count - len(row))
def wrap_text(
text: str,
width: int = 78,
initial_indent: str = "",
subsequent_indent: str = "",
preserve_paragraphs: bool = False,
) -> str:
"""A helper function that intelligently wraps text. By default, it
assumes that it operates on a single paragraph of text but if the
`preserve_paragraphs` parameter is provided it will intelligently
handle paragraphs (defined by two empty lines).
If paragraphs are handled, a paragraph can be prefixed with an empty
line containing the ``\\b`` character (``\\x08``) to indicate that
no rewrapping should happen in that block.
:param text: the text that should be rewrapped.
:param width: the maximum width for the text.
:param initial_indent: the initial indent that should be placed on the
first line as a string.
:param subsequent_indent: the indent string that should be placed on
each consecutive line.
:param preserve_paragraphs: if this flag is set then the wrapping will
intelligently handle paragraphs.
"""
from ._textwrap import TextWrapper
text = text.expandtabs()
wrapper = TextWrapper(
width,
initial_indent=initial_indent,
subsequent_indent=subsequent_indent,
replace_whitespace=False,
)
if not preserve_paragraphs:
return wrapper.fill(text)
p: list[tuple[int, bool, str]] = []
buf: list[str] = []
indent = None
def _flush_par() -> None:
if not buf:
return
if buf[0].strip() == "\b":
p.append((indent or 0, True, "\n".join(buf[1:])))
else:
p.append((indent or 0, False, " ".join(buf)))
del buf[:]
for line in text.splitlines():
if not line:
_flush_par()
indent = None
else:
if indent is None:
orig_len = term_len(line)
line = line.lstrip()
indent = orig_len - term_len(line)
buf.append(line)
_flush_par()
rv = []
for indent, raw, text in p:
with wrapper.extra_indent(" " * indent):
if raw:
rv.append(wrapper.indent_only(text))
else:
rv.append(wrapper.fill(text))
return "\n\n".join(rv)
class HelpFormatter:
"""This class helps with formatting text-based help pages. It's
usually just needed for very special internal cases, but it's also
exposed so that developers can write their own fancy outputs.
At present, it always writes into memory.
:param indent_increment: the additional increment for each level.
:param width: the width for the text. This defaults to the terminal
width clamped to a maximum of 78.
"""
def __init__(
self,
indent_increment: int = 2,
width: int | None = None,
max_width: int | None = None,
) -> None:
self.indent_increment = indent_increment
if max_width is None:
max_width = 80
if width is None:
import shutil
width = FORCED_WIDTH
if width is None:
width = max(min(shutil.get_terminal_size().columns, max_width) - 2, 50)
self.width = width
self.current_indent: int = 0
self.buffer: list[str] = []
def write(self, string: str) -> None:
"""Writes a unicode string into the internal buffer."""
self.buffer.append(string)
def indent(self) -> None:
"""Increases the indentation."""
self.current_indent += self.indent_increment
def dedent(self) -> None:
"""Decreases the indentation."""
self.current_indent -= self.indent_increment
def write_usage(self, prog: str, args: str = "", prefix: str | None = None) -> None:
"""Writes a usage line into the buffer.
:param prog: the program name.
:param args: whitespace separated list of arguments.
:param prefix: The prefix for the first line. Defaults to
``"Usage: "``.
"""
if prefix is None:
prefix = f"{_('Usage:')} "
usage_prefix = f"{prefix:>{self.current_indent}}{prog} "
text_width = self.width - self.current_indent
if text_width >= (term_len(usage_prefix) + 20):
# The arguments will fit to the right of the prefix.
indent = " " * term_len(usage_prefix)
self.write(
wrap_text(
args,
text_width,
initial_indent=usage_prefix,
subsequent_indent=indent,
)
)
else:
# The prefix is too long, put the arguments on the next line.
self.write(usage_prefix)
self.write("\n")
indent = " " * (max(self.current_indent, term_len(prefix)) + 4)
self.write(
wrap_text(
args, text_width, initial_indent=indent, subsequent_indent=indent
)
)
self.write("\n")
def write_heading(self, heading: str) -> None:
"""Writes a heading into the buffer."""
self.write(f"{'':>{self.current_indent}}{heading}:\n")
def write_paragraph(self) -> None:
"""Writes a paragraph into the buffer."""
if self.buffer:
self.write("\n")
def write_text(self, text: str) -> None:
"""Writes re-indented text into the buffer. This rewraps and
preserves paragraphs.
"""
indent = " " * self.current_indent
self.write(
wrap_text(
text,
self.width,
initial_indent=indent,
subsequent_indent=indent,
preserve_paragraphs=True,
)
)
self.write("\n")
def write_dl(
self,
rows: cabc.Sequence[tuple[str, str]],
col_max: int = 30,
col_spacing: int = 2,
) -> None:
"""Writes a definition list into the buffer. This is how options
and commands are usually formatted.
:param rows: a list of two item tuples for the terms and values.
:param col_max: the maximum width of the first column.
:param col_spacing: the number of spaces between the first and
second column.
"""
rows = list(rows)
widths = measure_table(rows)
if len(widths) != 2:
raise TypeError("Expected two columns for definition list")
first_col = min(widths[0], col_max) + col_spacing
for first, second in iter_rows(rows, len(widths)):
self.write(f"{'':>{self.current_indent}}{first}")
if not second:
self.write("\n")
continue
if term_len(first) <= first_col - col_spacing:
self.write(" " * (first_col - term_len(first)))
else:
self.write("\n")
self.write(" " * (first_col + self.current_indent))
text_width = max(self.width - first_col - 2, 10)
wrapped_text = wrap_text(second, text_width, preserve_paragraphs=True)
lines = wrapped_text.splitlines()
if lines:
self.write(f"{lines[0]}\n")
for line in lines[1:]:
self.write(f"{'':>{first_col + self.current_indent}}{line}\n")
else:
self.write("\n")
@contextmanager
def section(self, name: str) -> cabc.Iterator[None]:
"""Helpful context manager that writes a paragraph, a heading,
and the indents.
:param name: the section name that is written as heading.
"""
self.write_paragraph()
self.write_heading(name)
self.indent()
try:
yield
finally:
self.dedent()
@contextmanager
def indentation(self) -> cabc.Iterator[None]:
"""A context manager that increases the indentation."""
self.indent()
try:
yield
finally:
self.dedent()
def getvalue(self) -> str:
"""Returns the buffer contents."""
return "".join(self.buffer)
def join_options(options: cabc.Sequence[str]) -> tuple[str, bool]:
"""Given a list of option strings this joins them in the most appropriate
way and returns them in the form ``(formatted_string,
any_prefix_is_slash)`` where the second item in the tuple is a flag that
indicates if any of the option prefixes was a slash.
"""
rv = []
any_prefix_is_slash = False
for opt in options:
prefix = _split_opt(opt)[0]
if prefix == "/":
any_prefix_is_slash = True
rv.append((len(prefix), opt))
rv.sort(key=lambda x: x[0])
return ", ".join(x[1] for x in rv), any_prefix_is_slash

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