装饰器的进阶

 带参数的装饰器

import timeFLAGE = Falsedef 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 innerdef wrapper2(func):    def inner(*args,**kwargs):        print('3333333')        ret = func(*args,**kwargs)        print('4444444')        return ret    return innerdef wrapper3(func):    def inner(*args,**kwargs):        print('5555555')        ret = func(*args,**kwargs)        print('6666666')        return ret    return inner@wrapper3@wrapper2@wrapper1def funs():    print('233')    return '666'print(funs())