装饰器
def demo(name):
    print('demo--name', name)
    def demo1(demo_name):
        print('demo1--demoname', demo_name.__name__)
        def demo2():
            print('demo--name', name)
            demo_name()
        return demo2
    return demo1
@demo('zhuangshiqi')
def test():
    print('test')
test()