GetFullChatRequest.py

from telethon import TelegramClient
from telethon.tl.functions.messages import GetFullChatRequest

api_id = 12345 # my.telegram.org
api_hash = 'n91hds91hd90qwd'  # credenitals
phone_number = '+1231241213'

client = TelegramClient('telegram_script', api_id, api_hash)  # feel free to edit %sessionname% as you want
client.connect()  # logining and connecting to Telegram servers

if not client.is_user_authorized():  # authorization (if there is no .session file created before)
    client.send_code_request(phone_number)
    client.sign_in(phone_number, input('Enter the code: '))

# Using built-in methods
dialogs, entities = client.get_dialogs(10)

for i in range(10):
    if 'title' in dir(entities[i]):
        print(i, entities[i].title)

print('Got your first groups, provide a chat number: ')
chat = input()
print(entities[int(chat)].id)
result = client.invoke(
        GetFullChatRequest(entities[int(chat)].id)
)

info = result
print(info)
"""Traceback (most recent call last):
  File "GetFullChatRequest.py", line 26, in <module>
    GetFullChatRequest(entities[int(chat)].id)
  File "A:\PYTHON64\lib\site-packages\telethon\telegram_client.py", line 247, in invoke
    request, timeout=timeout, updates=updates)
  File "A:\PYTHON64\lib\site-packages\telethon\telegram_bare_client.py", line 189, in invoke
    self.sender.receive(request, timeout, updates=updates)
  File "A:\PYTHON64\lib\site-packages\telethon\network\mtproto_sender.py", line 105, in receive
    remote_msg_id, remote_seq, reader, updates)
  File "A:\PYTHON64\lib\site-packages\telethon\network\mtproto_sender.py", line 205, in _process_msg
    return self._handle_rpc_result(msg_id, sequence, reader)
  File "A:\PYTHON64\lib\site-packages\telethon\network\mtproto_sender.py", line 353, in _handle_rpc_result
    raise error
telethon.errors.rpc_errors_400.ChatIdInvalidError: (ChatIdInvalidError(...), 'Invalid object ID for a chat. Make sure to pass the right types.')"""