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# Pyrogram - Telegram MTProto API Client Library for Python

# This file is part of Pyrogram.

# Pyrogram is free software: you can redistribute it and/or modify

# it under the terms of the GNU Lesser General Public License as published

# by the Free Software Foundation, either version 3 of the License, or

# (at your option) any later version.

# Pyrogram 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 General Public License for more details.

# You should have received a copy of the GNU Lesser General Public License

# along with Pyrogram. If not, see <http://www.gnu.org/licenses/>.

from typing import Union

import pyrogram

from pyrogram import raw

from pyrogram import types

from pyrogram.errors import UserNotParticipant

class GetChatMember:

async def get_chat_member(

self: "pyrogram.Client",

chat_id: Union[int, str],

user_id: Union[int, str]

) -> "types.ChatMember":

"""Get information about one member of a chat.

.. include:: /_includes/usable-by/users-bots.rst

Parameters:

chat_id (``int`` | ``str``):

Unique identifier (int) or username (str) of the target chat.

user_id (``int`` | ``str``)::

Unique identifier (int) or username (str) of the target user.

For you yourself you can simply use "me" or "self".

For a contact that exists in your Telegram address book you can use his phone number (str).

Returns:

:obj:`~pyrogram.types.ChatMember`: On success, a chat member is returned.

Example:

.. code-block:: python

member = await app.get_chat_member(chat_id, "me")

print(member)

"""

chat = await self.resolve_peer(chat_id)

user = await self.resolve_peer(user_id)

if isinstance(chat, raw.types.InputPeerChat):

r = await self.invoke(

raw.functions.messages.GetFullChat(

chat_id=chat.chat_id

)

members = getattr(r.full_chat.participants, "participants", [])

users = {i.id: i for i in r.users}

for member in members:

member = types.ChatMember._parse(self, member, users, {})

if isinstance(user, raw.types.InputPeerSelf):

if member.user.is_self:

return member

else:

if member.user.id == user.user_id:

return member

else:

raise UserNotParticipant

elif isinstance(chat, raw.types.InputPeerChannel):

r = await self.invoke(

raw.functions.channels.GetParticipant(

channel=chat,

participant=user

)

users = {i.id: i for i in r.users}

chats = {i.id: i for i in r.chats}

return types.ChatMember._parse(self, r.participant, users, chats)

else:

raise ValueError(f'The chat_id "{chat_id}" belongs to a user')

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