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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/>.

import logging

from typing import Union, Optional, AsyncGenerator

import pyrogram

from pyrogram import raw, types, enums

log = logging.getLogger(__name__)

async def get_chunk(

client: "pyrogram.Client",

chat_id: Union[int, str],

offset: int,

filter: "enums.ChatMembersFilter",

limit: int,

query: str,

is_queryable = filter in [enums.ChatMembersFilter.SEARCH,

enums.ChatMembersFilter.BANNED,

enums.ChatMembersFilter.RESTRICTED]

filter = filter.value(q=query) if is_queryable else filter.value()

r = await client.invoke(

raw.functions.channels.GetParticipants(

channel=await client.resolve_peer(chat_id),

filter=filter,

offset=offset,

limit=limit,

hash=0

sleep_threshold=60

)

members = r.participants

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

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

return [types.ChatMember._parse(client, member, users, chats) for member in members]

class GetChatMembers:

async def get_chat_members(

self: "pyrogram.Client",

chat_id: Union[int, str],

query: str = "",

limit: int = 0,

filter: "enums.ChatMembersFilter" = enums.ChatMembersFilter.SEARCH

) -> Optional[AsyncGenerator["types.ChatMember", None]]:

"""Get the members list of a chat.

A chat can be either a basic group, a supergroup or a channel.

Requires administrator rights in channels.

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

Parameters:

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

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

query (``str``, *optional*):

Query string to filter members based on their display names and usernames.

Only applicable to supergroups and channels. Defaults to "" (empty string).

A query string is applicable only for :obj:`~pyrogram.enums.ChatMembersFilter.SEARCH`,

:obj:`~pyrogram.enums.ChatMembersFilter.BANNED` and :obj:`~pyrogram.enums.ChatMembersFilter.RESTRICTED`

filters only.

limit (``int``, *optional*):

Limits the number of members to be retrieved.

filter (:obj:`~pyrogram.enums.ChatMembersFilter`, *optional*):

Filter used to select the kind of members you want to retrieve. Only applicable for supergroups

and channels.

Returns:

``Generator``: On success, a generator yielding :obj:`~pyrogram.types.ChatMember` objects is returned.

Example:

.. code-block:: python

from pyrogram import enums

# Get members

async for member in app.get_chat_members(chat_id):

print(member)

# Get administrators

administrators = []

async for m in app.get_chat_members(chat_id, filter=enums.ChatMembersFilter.ADMINISTRATORS):

administrators.append(m)

# Get bots

bots = []

async for m in app.get_chat_members(chat_id, filter=enums.ChatMembersFilter.BOTS):

bots.append(m)

"""

peer = await self.resolve_peer(chat_id)

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

r = await self.invoke(

raw.functions.messages.GetFullChat(

chat_id=peer.chat_id

)

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

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

for member in members:

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

return

current = 0

offset = 0

total = abs(limit) or (1 << 31) - 1

limit = min(200, total)

while True:

members = await get_chunk(

client=self,

chat_id=chat_id,

offset=offset,

filter=filter,

limit=limit,

query=query

)

if not members:

return

offset += len(members)

for member in members:

yield member

current += 1

if current >= total:

return

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