python第九期学习笔记（装饰器）

一：初识

 

import time
def fun1():
    print("哈哈哈")
    time.sleep(2)

def timer(f):
    def inner():
        start_time=time.time()
        f()
        end_time=time.time()
        print(end_time-start_time)
    return inner
f=timer(fun1)
f()