Question 235065 in Telegram API Question posted in
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How to check if a user is subscribed to my telegram channel or not using telethon

I want to know if a user with specific id is joined in my telegram channel which I’m admin in it using telethon. I already tried getting list of all users of my channel but it returns at most 200 users. I need to check user by user that if it is joined or not.

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2

Answers


  1. 0

    You can use GetParticipantRequest to check if the user is in chat. If not, it would return an error: telethon.errors.rpcerrorlist.UserNotParticipantError.

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  2. 0

    This work for my.

        class GetParticipantsInChannels(object):
        __all_participants:list
        def load_participants_users(self, session, api_id, api_hash, 
            channel_username):
            all_participants=[]
            with TelegramClient( session, api_id, api_hash) as client:
                channel = client.get_entity(channel_username)
                offset=0
                while True:
                    participants = client(
                        GetParticipantsRequest(
                            channel,
                            ChannelParticipantsSearch(''),
                            offset,
                            limit=16000,
                            hash=0
                        )
                    )
                    if not participants.users:
                        break
                    all_participants.extend(participants.users)
                    offset += len(participants.users)
            self.__all_participants=all_participants

participantsChannel = GetParticipantsInChannels()
participantsChannel.load_participants_users( session, 
                    api_id, api_hash, channel_username)
usernames = participantsChannel.get_usernames()
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