2016-04-14 23:57:40 +02:00
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#!/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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2018-01-04 16:16:06 +01:00
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# Copyright (C) 2015-2018
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2016-04-14 23:57:40 +02:00
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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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2017-09-01 08:43:08 +02:00
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"""This module contains the base class for handlers as used by the Dispatcher."""
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2016-04-14 23:57:40 +02:00
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class Handler(object):
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"""The base class for all update handlers. Create custom handlers by inheriting from it.
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2017-07-23 22:33:08 +02:00
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Attributes:
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callback (:obj:`callable`): The callback function for this handler.
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pass_update_queue (:obj:`bool`): Optional. Determines whether ``update_queue`` will be
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passed to the callback function.
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pass_job_queue (:obj:`bool`): Optional. Determines whether ``job_queue`` will be passed to
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the callback function.
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pass_user_data (:obj:`bool`): Optional. Determines whether ``user_data`` will be passed to
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the callback function.
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pass_chat_data (:obj:`bool`): Optional. Determines whether ``chat_data`` will be passed to
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the callback function.
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Note:
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:attr:`pass_user_data` and :attr:`pass_chat_data` determine whether a ``dict`` you
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Bot API 4.0 (#1168)
Telegram Passport (#1174):
- Add full support for telegram passport.
- New types: PassportData, PassportFile, EncryptedPassportElement, EncryptedCredentials, PassportElementError, PassportElementErrorDataField, PassportElementErrorFrontSide, PassportElementErrorReverseSide, PassportElementErrorSelfie, PassportElementErrorFile and PassportElementErrorFiles.
- New bot method: set_passport_data_errors
- New filter: Filters.passport_data
- Field passport_data field on Message
- PassportData is automagically decrypted when you specify your private key when creating Updater or Bot.
- PassportFiles is also automagically decrypted as you download/retrieve them.
- See new passportbot.py example for details on how to use, or go to our telegram passport wiki page for more info
- NOTE: Passport decryption requires new dependency `cryptography`.
Inputfile rework (#1184):
- Change how Inputfile is handled internally
- This allows support for specifying the thumbnails of photos and videos using the thumb= argument in the different send_ methods.
- Also allows Bot.send_media_group to actually finally send more than one media.
- Add thumb to Audio, Video and Videonote
- Add Bot.edit_message_media together with InputMediaAnimation, InputMediaAudio, and inputMediaDocument.
Other Bot API 4.0 changes:
- Add forusquare_type to Venue, InlineQueryResultVenue, InputVenueMessageContent, and Bot.send_venue. (#1170)
- Add vCard support by adding vcard field to Contact, InlineQueryResultContact, InputContactMessageContent, and Bot.send_contact. (#1166)
- Support new message entities: CASHTAG and PHONE_NUMBER. (#1179)
- Cashtag seems to be things like $USD and $GBP, but it seems telegram doesn't currently send them to bots.
- Phone number also seems to have limited support for now
- Add Bot.send_animation, add width, height, and duration to Animation, and add Filters.animation. (#1172)
Co-authored-by: Jasmin Bom <jsmnbom@gmail.com>
Co-authored-by: code1mountain <32801117+code1mountain@users.noreply.github.com>
Co-authored-by: Eldinnie <pieter.schutz+github@gmail.com>
Co-authored-by: mathefreak1 <mathefreak@hi2.in>
2018-08-29 14:18:58 +02:00
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can use to keep any data in will be sent to the :attr:`callback` function. Related to
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either the user or the chat that the update was sent in. For each update from the same user
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or in the same chat, it will be the same ``dict``.
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2016-04-16 16:36:12 +02:00
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Args:
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callback (:obj:`callable`): A function that takes ``bot, update`` as positional arguments.
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It will be called when the :attr:`check_update` has determined that an update should be
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processed by this handler.
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pass_update_queue (:obj:`bool`, optional): If set to ``True``, a keyword argument called
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``update_queue`` will be passed to the callback function. It will be the ``Queue``
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instance used by the :class:`telegram.ext.Updater` and :class:`telegram.ext.Dispatcher`
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that contains new updates which can be used to insert updates. Default is ``False``.
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pass_job_queue (:obj:`bool`, optional): If set to ``True``, a keyword argument called
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``job_queue`` will be passed to the callback function. It will be a
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:class:`telegram.ext.JobQueue` instance created by the :class:`telegram.ext.Updater`
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which can be used to schedule new jobs. Default is ``False``.
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pass_user_data (:obj:`bool`, optional): If set to ``True``, a keyword argument called
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``user_data`` will be passed to the callback function. Default is ``False``.
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pass_chat_data (:obj:`bool`, optional): If set to ``True``, a keyword argument called
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``chat_data`` will be passed to the callback function. Default is ``False``.
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2016-04-16 16:36:12 +02:00
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"""
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2016-10-25 19:28:34 +02:00
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def __init__(self,
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callback,
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pass_update_queue=False,
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pass_job_queue=False,
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pass_user_data=False,
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pass_chat_data=False):
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self.callback = callback
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self.pass_update_queue = pass_update_queue
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self.pass_job_queue = pass_job_queue
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self.pass_user_data = pass_user_data
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self.pass_chat_data = pass_chat_data
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2016-04-14 23:57:40 +02:00
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2016-04-28 14:29:27 +02:00
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def check_update(self, update):
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"""
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This method is called to determine if an update should be handled by
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this handler instance. It should always be overridden.
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Args:
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update (:obj:`str` | :class:`telegram.Update`): The update to be tested.
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2016-04-25 09:19:50 +02:00
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Returns:
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:obj:`bool`
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"""
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raise NotImplementedError
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def handle_update(self, update, dispatcher):
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"""
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This method is called if it was determined that an update should indeed
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be handled by this instance. It should also be overridden, but in most
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cases call ``self.callback(dispatcher.bot, update)``, possibly along with
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optional arguments. To work with the ``ConversationHandler``, this method should return the
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value returned from ``self.callback``
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Args:
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update (:obj:`str` | :class:`telegram.Update`): The update to be handled.
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dispatcher (:class:`telegram.ext.Dispatcher`): The dispatcher to collect optional args.
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"""
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raise NotImplementedError
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def collect_optional_args(self, dispatcher, update=None):
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"""Prepares the optional arguments that are the same for all types of handlers.
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Args:
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dispatcher (:class:`telegram.ext.Dispatcher`): The dispatcher.
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"""
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optional_args = dict()
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if self.pass_update_queue:
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optional_args['update_queue'] = dispatcher.update_queue
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if self.pass_job_queue:
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optional_args['job_queue'] = dispatcher.job_queue
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if self.pass_user_data or self.pass_chat_data:
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chat = update.effective_chat
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user = update.effective_user
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if self.pass_user_data:
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optional_args['user_data'] = dispatcher.user_data[user.id if user else None]
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if self.pass_chat_data:
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optional_args['chat_data'] = dispatcher.chat_data[chat.id if chat else None]
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return optional_args
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