code: def start_polling(dispatcher, *, loop=None, skip_updates=False, reset_webhook=True,
                    on_startup=None, on_shutdown=None, timeout=20, fast=True):
      
      executor = Executor(dispatcher, skip_updates=skip_updates, loop=loop)
      _setup_callbacks(executor, on_startup, on_shutdown)
  
      executor.start_polling(reset_webhook=reset_webhook, timeout=timeout, fast=fast)
docs: Start bot in long-polling mode
  
      :param dispatcher:
      :param loop:
      :param skip_updates:
      :param reset_webhook:
      :param on_startup:
      :param on_shutdown:
      :param timeout: