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# python-telegram-bot - a Python interface to the Telegram Bot API
# Copyright (C) 2015-2018
# by the python-telegram-bot contributors <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/].
"""Constants in the Telegram network.
The following constants were extracted from the
`Telegram Bots FAQ <https://core.telegram.org/bots/faq>`_.
Attributes:
MAX_MESSAGE_LENGTH (:obj:`int`): 4096
MAX_CAPTION_LENGTH (:obj:`int`): 200
SUPPORTED_WEBHOOK_PORTS (List[:obj:`int`]): [443, 80, 88, 8443]
MAX_FILESIZE_DOWNLOAD (:obj:`int`): In bytes (20MB)
MAX_FILESIZE_UPLOAD (:obj:`int`): In bytes (50MB)
MAX_MESSAGES_PER_SECOND_PER_CHAT (:obj:`int`): `1`. Telegram may allow short bursts that go
over this limit, but eventually you'll begin receiving 429 errors.
MAX_MESSAGES_PER_SECOND (:obj:`int`): 30
MAX_MESSAGES_PER_MINUTE_PER_GROUP (:obj:`int`): 20
MAX_INLINE_QUERY_RESULTS (:obj:`int`): 50
The following constant have been found by experimentation:
Attributes:
MAX_MESSAGE_ENTITIES (:obj:`int`): 100 (Beyond this cap telegram will simply ignore further
formatting styles)
"""
MAX_MESSAGE_LENGTH = 4096
MAX_CAPTION_LENGTH = 200
# constants above this line are tested
SUPPORTED_WEBHOOK_PORTS = [443, 80, 88, 8443]
MAX_FILESIZE_DOWNLOAD = int(20E6) # (20MB)
MAX_FILESIZE_UPLOAD = int(50E6) # (50MB)
MAX_MESSAGES_PER_SECOND_PER_CHAT = 1
MAX_MESSAGES_PER_SECOND = 30
MAX_MESSAGES_PER_MINUTE_PER_GROUP = 20
MAX_MESSAGE_ENTITIES = 100
MAX_INLINE_QUERY_RESULTS = 50