send a poll in telethon telegram bot

Question

How can i send a poll? I am trying the following code but it returns no error and the poll is not sent:

from typing import Optional
from telethon.sync import TelegramClient
from telethon.tl.types import *
from telethon.tl.functions.messages import *

def _build_poll(question: str, *answers: str, closed: Optional[bool] = None,
                id: int = 0) -> InputMediaPoll:
    """Build a poll object."""
    return InputMediaPoll(Poll(
        id=id, question=question, answers=[
            PollAnswer(text=i, option=bytes([idx]))
            for idx, i in enumerate(answers)
        ],
        closed=closed
    ))

poll = _build_poll(f"Question", "Answer 1", "Answer 2", "Answer 3")
message = client.send_message(-325188743, file=poll)

Is there any better way to submit a poll with telethon?

Answer 1

To send polls you need to construct the poll media object with the raw API types found in https://tl.telethon.dev/.

In your case, you need an example of sending would be to send a InputMediaPoll as the example shows:

await client.send_message('@username',file=types.InputMediaPoll(
    poll=types.Poll(
        id=..., # type: long (random id)
        question=..., # type: string (the question)
        answers=... # type: list of PollAnswer (up to 10 answers)
    )
))

With actual values:

from telethon.tl.types import InputMediaPoll, Poll, PollAnswer

await client.send_message("telethonofftopic",file=InputMediaPoll(
    poll=Poll(
        id=53453159,
        question="Is it 2020?",
        answers=[PollAnswer('Yes', b'1'), PollAnswer('No', b'2')]
    )
))