telegram_bot.py

import os
from telegram.ext import Updater, CommandHandler


def hello_world(update, context):
    update.message.reply_text(
        "Olá Mundo! Sou o novo bot."
    )


def main():
    token = os.getenv('TELEGRAM_TOKEN')
    updater = Updater(token=token)
    dispatcher = updater.dispatcher
    dispatcher.add_handler(CommandHandler('start', hello_world));

    updater.start_polling()


if __name__ == '__main__':
    main()