python-telegram-bot/telegram/utils/deprecate.py
2020-10-07 20:30:41 +02:00

47 lines
1.7 KiB
Python

#!/usr/bin/env python
#
# A library that provides a Python interface to the Telegram Bot API
# Copyright (C) 2015-2020
# 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 facilitates the deprecation of functions."""
import warnings
from typing import Callable, TypeVar, Any
RT = TypeVar('RT')
# We use our own DeprecationWarning since they are muted by default and "UserWarning" makes it
# seem like it's the user that issued the warning
# We name it something else so that you don't get confused when you attempt to suppress it
class TelegramDeprecationWarning(Warning):
pass
def warn_deprecate_obj(old: str, new: str, stacklevel: int = 3) -> None:
warnings.warn(
'{} is being deprecated, please use {} from now on.'.format(old, new),
category=TelegramDeprecationWarning,
stacklevel=stacklevel)
def deprecate(func: Callable[..., RT], old: str, new: str) -> Callable[..., RT]:
"""Warn users invoking old to switch to the new function."""
def f(*args: Any, **kwargs: Any) -> RT:
warn_deprecate_obj(old, new)
return func(*args, **kwargs)
return f