how to find out who joined the telegram channel using telethon

Question

I know that there are "channel actions" but I could not find how to access it

Answer 1

You are probably thinking about the "admin log", which you can access with client.iter_admin_log . Assuming you have a logged-in account, and said account is an administrator of channel :

async for event in client.iter_admin_log(channel):
    if event.changed_title:
        print('The title changed from', event.old, 'to', event.new)

You will also want to read the documentation for the event type, AdminLogEvent , to learn what you can do with it.