input.py 文件源码

def _close_input_devices(self):
        if not hasattr(self, '_opened') or not self._opened:
            return

        self._opened = False

        for event_device in self._event_devices:
            asyncio.get_event_loop().remove_reader(event_device.fileno())
            event_device.close()

        tasks = []
        for task in self._tasks:
            if not task.done():
                task.cancel()
                tasks.append(task)

        await asyncio.wait(tasks, return_when=futures.ALL_COMPLETED)
        self._event_devices.clear()