python电报bot:&；=的操作数类型不受支持：'；功能'；和'_UpdateType'；

当bot启动时，python电报bot库中会弹出一个错误

  File "/usr/local/lib/python3.5/dist-packages/telegram/ext/messagehandler.py", line 131, in __init__
    self.filters &= Filters.update
TypeError: unsupported operand type(s) for &=: 'function' and '_UpdateType'
 unsupported operand type(s) for &=: 'function' and '_UpdateType'

在messagehandler.py中

    if message_updates is False and channel_post_updates is False and edited_updates is False:
        raise ValueError(
            'message_updates, channel_post_updates and edited_updates are all False')
    self.filters = filters
    if self.filters is not None:
        self.filters &= Filters.update
    else:
        self.filters = Filters.update

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你能分享你的代码吗？