#! /usr/bin/env python
# A library that provides a Python interface to the Telegram Bot API
# Copyright (C) 2015-2025
# Leandro Toledo de Souza <devs@python-telegram-bot.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser Public License for more details.
#
# You should have received a copy of the GNU Lesser Public License
# along with this program. If not, see [http://www.gnu.org/licenses/].
"""This module contains classes used for warnings issued by this library.
.. versionadded:: 20.0
"""
__all__ = ["PTBDeprecationWarning", "PTBRuntimeWarning", "PTBUserWarning"]
[docs]
class PTBUserWarning(UserWarning):
"""
Custom user warning class used for warnings in this library.
.. seealso:: :wiki:`Exceptions, Warnings and Logging <Exceptions%2C-Warnings-and-Logging>`
.. versionadded:: 20.0
"""
__slots__ = ()
class PTBRuntimeWarning(PTBUserWarning, RuntimeWarning):
"""
Custom runtime warning class used for warnings in this library.
.. versionadded:: 20.0
"""
__slots__ = ()
# https://www.python.org/dev/peps/pep-0565/ recommends using a custom warning class derived from
# DeprecationWarning. We also subclass from PTBUserWarning so users can easily 'switch off'
# warnings
class PTBDeprecationWarning(PTBUserWarning, DeprecationWarning):
"""
Custom warning class for deprecations in this library.
.. versionchanged:: 20.0
Renamed TelegramDeprecationWarning to PTBDeprecationWarning.
Args:
version (:obj:`str`): The version in which the feature was deprecated.
.. versionadded:: 21.2
message (:obj:`str`): The message to display.
.. versionadded:: 21.2
Attributes:
version (:obj:`str`): The version in which the feature was deprecated.
.. versionadded:: 21.2
message (:obj:`str`): The message to display.
.. versionadded:: 21.2
"""
__slots__ = ("message", "version")
def __init__(self, version: str, message: str) -> None:
self.version: str = version
self.message: str = message
def __str__(self) -> str:
"""Returns a string representation of the warning, using :attr:`message` and
:attr:`version`.
.. versionadded:: 21.2
"""
return f"Deprecated since version {self.version}: {self.message}"