base_events.py 文件源码

def run_forever(self):
        """Run until stop() is called."""
        self._check_closed()
        if self.is_running():
            raise RuntimeError('Event loop is running.')
        self._set_coroutine_wrapper(self._debug)
        self._thread_id = threading.get_ident()
        try:
            while True:
                self._run_once()
                if self._stopping:
                    break
        finally:
            self._stopping = False
            self._thread_id = None
            self._set_coroutine_wrapper(False)