装饰器原理-代码解释

# coding:utf-8

# 带参数装饰器
def f1(func):

    print('开始！')
    def f2(a):
        print(func)
        a()
        print('执行')
    return f2


@f1('666')
def f3():
    print('测试开始')

# 无参数装饰器

def f1(func):
    print('开始！')

    def f2():
        func()
        print('执行')
    return f2


@f1
def f3():
    print('测试开始')

if __name__ == '__main__':
    f3()