初学python第十二天的随堂笔记

Posted 2020-10-19 granddarkness

装饰器的进阶

 带参数的装饰器

import time
FLAGE = False
def timmer_out(flag):
    def timmer(func):
        def inner(*args,**kwargs):
            if flag:
                start = time.time()
                ret = func(*args,**kwargs)
                end = time.time()
                print(end-start)
                return ret
            else:
                ret = func(*args,**kwargs)
                return ret
        return inner
    return timmer
@timmer_out(FLAGE)
def funs():
    time.sleep(0.2)
    print(‘大家好呀大家好‘)
@timmer_out(FLAGE)
def func():
    time.sleep(0.2)
    print(‘新年好呀新年好‘)
funs()
func()

多个装饰器装饰一个函数

def wrapper1(func):
    def inner(*args,**kwargs):
        print(‘1111111‘)
        ret = func(*args,**kwargs)
        print(‘2222222‘)
        return ret
    return inner
def wrapper2(func):
    def inner(*args,**kwargs):
        print(‘3333333‘)
        ret = func(*args,**kwargs)
        print(‘4444444‘)
        return ret
    return inner
def wrapper3(func):
    def inner(*args,**kwargs):
        print(‘5555555‘)
        ret = func(*args,**kwargs)
        print(‘6666666‘)
        return ret
    return inner
@wrapper3
@wrapper2
@wrapper1
def funs():
    print(‘233‘)
    return ‘666‘
print(funs())