Automates botfather and dumps all your bot tokens, does not get usernames, only tokens.

get_tokens.py

import re
import logging
import asyncio
import telethon
import itertools
from telethon import TelegramClient, events


logging.basicConfig(level=logging.INFO)


def find_button_with_text(buttons, text):
    for button in itertools.chain.from_iterable(buttons):
        if button.text == text:
            return button
        if callable(text) and text(button.text):
            return button


async def get_all_tokens(conv, reply):
    async def click_button(button):
        response = conv.get_edit()
        await button.click()
        return await response

    seen = set()
    tokens = []
    while 1:
        # find button to click
        target = None
        next_button = None
        for button in itertools.chain.from_iterable(reply.buttons):
            if button.text.startswith('@') and button.text not in seen:
                seen.add(button.text)
                target = button
                break
            if button.text == '»':
                next_button = button
        # go to next page if we've checked all
        if not target and next_button:
            reply = await click_button(next_button)
            continue
        # return if nothing to do
        if not target and not next_button:
            return tokens

        # go to bot page and click token button
        reply = await click_button(target)
        b = find_button_with_text(reply.buttons, 'API Token')
        reply = await click_button(b)

        # get token
        token = re.search('\d+:[A-Za-z0-9-_]+', reply.raw_text).group(0)
        tokens.append(token)

        # go back to list
        b = find_button_with_text(reply.buttons, lambda s: 'Back' in s)
        reply = await click_button(b)

        b = find_button_with_text(reply.buttons, lambda s: 'Back' in s)
        reply = await click_button(b)


async def main():
    client = TelegramClient('durov', 6, 'eb06d4abfb49dc3eeb1aeb98ae0f581e')
    client.flood_sleep_threshold = 999999
    await client.start()

    # Note: a better way to do this would be to:
    # - observe bot buttons to get all the ids
    # - the for each button that we've seen:
    #   - click it, click the token button
    # However this isn't possible since we can only click buttons that exist on
    # the message, so no fancy jumping around.
    #
    # Thanks Durov

    async with client.conversation('@BotFather') as conv:
        await conv.send_message('/mybots')
        reply = await conv.get_response()
        tokens = await get_all_tokens(conv, reply)

    for token in tokens:
        print(token)


asyncio.run(main())