装饰器基础写法

def outer(func):
    def inner():
        print("睡眠")
        func()
        print("起床")

    return inner


def sleep():
    import time
    print("睡眠中、、、")
    time.sleep(5)


f1 = outer(sleep)
f1()

装饰器语法糖

def outer(func):
    def inner():
        print("休息一下")
        func()
        print("结束休息")

    return inner  # 注意此处写法，无括号


@outer
def sleeping():
    import time
    print("休眠中....")
    time.sleep(5)


sleeping()