装饰器复习

Posted 2021-02-03 wjw6692353

 之前学的装饰器有挺多不懂得,今天又重新看了一下,才明白装饰器的实质就是闭包

import time
def inner(x):
    def wapper(*args,**kwargs):
        s_time = time.time()
        x(*args,**kwargs)
        ss_time = time .time()
        print(ss_time - s_time)
    return wapper
@inner
def func(*args,**kwargs):
    print(*args,**kwargs)
    time.sleep(2)
func(4,5,6,‘hhh‘,‘fghjfg‘,‘hfjgh‘,{‘asfd‘:65656})

这是一个代码效率检测的小程序,接下来上一个装饰器的一般简易形式

def inner(func):
    def warpper(*args,**kwargs):
        func(*args,**kwargs)
    return warpper
@inner
def num_sum(*args,**kwargs):
    print(*args,**kwargs)