键盘库中的奇怪异常＆lt;＆lt;蟒蛇

Question

我想等到按下'q'按钮

这是我的代码：

import keyboard
while True:
        if keyboard.is_pressed('q'):
            print('q is pressed')
            break #finishing the loop

这是我得到的例外：

Exception in thread Thread-1:
Traceback (most recent call last):
  File "C:\Python27\lib\threading.py", line 810, in __bootstrap_inner
    self.run()
  File "C:\Python27\lib\threading.py", line 763, in run
    self.__target(*self.__args, **self.__kwargs)
  File "C:\Python27\lib\site-packages\keyboard\__init__.py", line 134, in listen
    _os_keyboard.listen(self.queue, _key_table.is_allowed)
  File "C:\Python27\lib\site-packages\keyboard\_winkeyboard.py", line 423, in listen
    keyboard_hook = SetWindowsHookEx(WH_KEYBOARD_LL, keyboard_callback, NULL, NULL)
ArgumentError: argument 2: <type 'exceptions.TypeError'>: expected CFunctionType instance instead of CFunctionType

问题是什么？