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67 lines
2.5 KiB
Python
67 lines
2.5 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) 2015-2022
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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 the ChatJoinRequestHandler class."""
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from telegram import Update
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from telegram.ext import Handler
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from telegram.ext._utils.types import CCT
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class ChatJoinRequestHandler(Handler[Update, CCT]):
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"""Handler class to handle Telegram updates that contain a chat join request.
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Warning:
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When setting ``run_async`` to :obj:`True`, you cannot rely on adding custom
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attributes to :class:`telegram.ext.CallbackContext`. See its docs for more info.
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.. versionadded:: 13.8
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Args:
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callback (:obj:`callable`): The callback function for this handler. Will be called when
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:attr:`check_update` has determined that an update should be processed by this handler.
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Callback signature for context based API:
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``def callback(update: Update, context: CallbackContext)``
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The return value of the callback is usually ignored except for the special case of
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:class:`telegram.ext.ConversationHandler`.
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run_async (:obj:`bool`): Determines whether the callback will run asynchronously.
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Defaults to :obj:`False`.
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Attributes:
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callback (:obj:`callable`): The callback function for this handler.
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run_async (:obj:`bool`): Determines whether the callback will run asynchronously.
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"""
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__slots__ = ()
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def check_update(self, update: object) -> bool:
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"""Determines whether an update should be passed to this handlers :attr:`callback`.
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Args:
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update (:class:`telegram.Update` | :obj:`object`): Incoming update.
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Returns:
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:obj:`bool`
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"""
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return isinstance(update, Update) and bool(update.chat_join_request)
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