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https://github.com/python-telegram-bot/python-telegram-bot.git
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254 lines
7.2 KiB
Python
254 lines
7.2 KiB
Python
#!/usr/bin/env python
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#
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# A library that provides a Python interface to the Telegram Bot API
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# Copyright (C) 2015-2023
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# Leandro Toledo de Souza <devs@python-telegram-bot.org>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser Public License for more details.
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#
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# You should have received a copy of the GNU Lesser Public License
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# along with this program. If not, see [http://www.gnu.org/licenses/].
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"""This module contains classes that represent Telegram errors.
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.. versionchanged:: 20.0
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Replaced ``Unauthorized`` by :class:`Forbidden`.
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"""
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__all__ = (
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"BadRequest",
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"ChatMigrated",
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"Conflict",
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"Forbidden",
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"InvalidToken",
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"NetworkError",
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"PassportDecryptionError",
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"RetryAfter",
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"TelegramError",
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"TimedOut",
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)
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from typing import Optional, Tuple, Union
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def _lstrip_str(in_s: str, lstr: str) -> str:
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"""
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Args:
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in_s (:obj:`str`): in string
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lstr (:obj:`str`): substr to strip from left side
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Returns:
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:obj:`str`: The stripped string.
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"""
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return in_s[len(lstr) :] if in_s.startswith(lstr) else in_s
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class TelegramError(Exception):
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"""
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Base class for Telegram errors.
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Tip:
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Objects of this type can be serialized via Python's :mod:`pickle` module and pickled
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objects from one version of PTB are usually loadable in future versions. However, we can
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not guarantee that this compatibility will always be provided. At least a manual one-time
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conversion of the data may be needed on major updates of the library.
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.. seealso:: :wiki:`Exceptions, Warnings and Logging <Exceptions%2C-Warnings-and-Logging>`
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"""
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__slots__ = ("message",)
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def __init__(self, message: str):
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super().__init__()
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msg = _lstrip_str(message, "Error: ")
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msg = _lstrip_str(msg, "[Error]: ")
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msg = _lstrip_str(msg, "Bad Request: ")
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if msg != message:
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# api_error - capitalize the msg...
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msg = msg.capitalize()
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self.message: str = msg
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def __str__(self) -> str:
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"""Gives the string representation of exceptions message.
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Returns:
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:obj:`str`
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"""
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return self.message
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def __repr__(self) -> str:
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"""Gives an unambiguous string representation of the exception.
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Returns:
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:obj:`str`
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"""
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return f"{self.__class__.__name__}('{self.message}')"
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def __reduce__(self) -> Tuple[type, Tuple[str]]:
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"""Defines how to serialize the exception for pickle.
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.. seealso::
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:py:meth:`object.__reduce__`, :mod:`pickle`.
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Returns:
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:obj:`tuple`
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"""
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return self.__class__, (self.message,)
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class Forbidden(TelegramError):
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"""Raised when the bot has not enough rights to perform the requested action.
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Examples:
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:any:`Raw API Bot <examples.rawapibot>`
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.. versionchanged:: 20.0
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This class was previously named ``Unauthorized``.
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"""
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__slots__ = ()
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class InvalidToken(TelegramError):
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"""Raised when the token is invalid.
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Args:
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message (:obj:`str`, optional): Any additional information about the exception.
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.. versionadded:: 20.0
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"""
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__slots__ = ()
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def __init__(self, message: Optional[str] = None) -> None:
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super().__init__("Invalid token" if message is None else message)
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class NetworkError(TelegramError):
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"""Base class for exceptions due to networking errors.
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Tip:
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This exception (and its subclasses) usually originates from the networking backend
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used by :class:`~telegram.request.HTTPXRequest`, or a custom implementation of
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:class:`~telegram.request.BaseRequest`. In this case, the original exception can be
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accessed via the ``__cause__``
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`attribute <https://docs.python.org/3/library/exceptions.html#exception-context>`_.
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Examples:
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:any:`Raw API Bot <examples.rawapibot>`
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.. seealso::
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:wiki:`Handling network errors <Handling-network-errors>`
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"""
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__slots__ = ()
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class BadRequest(NetworkError):
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"""Raised when Telegram could not process the request correctly."""
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__slots__ = ()
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class TimedOut(NetworkError):
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"""Raised when a request took too long to finish.
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.. seealso::
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:wiki:`Handling network errors <Handling-network-errors>`
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Args:
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message (:obj:`str`, optional): Any additional information about the exception.
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.. versionadded:: 20.0
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"""
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__slots__ = ()
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def __init__(self, message: Optional[str] = None) -> None:
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super().__init__(message or "Timed out")
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class ChatMigrated(TelegramError):
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"""
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Raised when the requested group chat migrated to supergroup and has a new chat id.
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.. seealso::
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:wiki:`Storing Bot, User and Chat Related Data <Storing-bot%2C-user-and-chat-related-data>`
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Args:
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new_chat_id (:obj:`int`): The new chat id of the group.
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Attributes:
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new_chat_id (:obj:`int`): The new chat id of the group.
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"""
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__slots__ = ("new_chat_id",)
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def __init__(self, new_chat_id: int):
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super().__init__(f"Group migrated to supergroup. New chat id: {new_chat_id}")
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self.new_chat_id: int = new_chat_id
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def __reduce__(self) -> Tuple[type, Tuple[int]]: # type: ignore[override]
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return self.__class__, (self.new_chat_id,)
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class RetryAfter(TelegramError):
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"""
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Raised when flood limits where exceeded.
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.. versionchanged:: 20.0
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:attr:`retry_after` is now an integer to comply with the Bot API.
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Args:
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retry_after (:obj:`int`): Time in seconds, after which the bot can retry the request.
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Attributes:
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retry_after (:obj:`int`): Time in seconds, after which the bot can retry the request.
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"""
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__slots__ = ("retry_after",)
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def __init__(self, retry_after: int):
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super().__init__(f"Flood control exceeded. Retry in {retry_after} seconds")
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self.retry_after: int = retry_after
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def __reduce__(self) -> Tuple[type, Tuple[float]]: # type: ignore[override]
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return self.__class__, (self.retry_after,)
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class Conflict(TelegramError):
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"""Raised when a long poll or webhook conflicts with another one."""
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__slots__ = ()
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def __reduce__(self) -> Tuple[type, Tuple[str]]:
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return self.__class__, (self.message,)
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class PassportDecryptionError(TelegramError):
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"""Something went wrong with decryption.
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.. versionchanged:: 20.0
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This class was previously named ``TelegramDecryptionError`` and was available via
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``telegram.TelegramDecryptionError``.
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"""
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__slots__ = ("_msg",)
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def __init__(self, message: Union[str, Exception]):
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super().__init__(f"PassportDecryptionError: {message}")
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self._msg = str(message)
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def __reduce__(self) -> Tuple[type, Tuple[str]]:
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return self.__class__, (self._msg,)
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