一日一技：如何统计Python函数被调用了几次？

class CallingCounter(object):
    def __init__ (self, func):
        self.func = func
        self.count = 0

    def __call__ (self, *args, **kwargs):
        self.count += 1
        return self.func(*args, **kwargs)

@CallingCounter
def test():
    print('我被调用了')