python闭包及装饰器练习

def tips(func):
    def nei(a,b):
        print('start')
        func(a,b)
        print('stop')

    return nei

@tips
def add(a,b):
    print(a+b)

@tips
def sun(a,b):
    print(a-b)

print(add(4,5))
print(sun(5,1))


def new_tips(argv):
    def tips(func):
        def nei(a,b):
            print('start %s %s' %(argv,func.__name__))
            func(a,b)
            print('stop')

        return nei
    return tips

@new_tips('add_module')
def add(a,b):
    print(a+b)

@new_tips('sub_module')
def sub(a,b):
    print(a-b)

print(add(4,5))
print(sub(5,4))