了解装饰器

def login(string):
    def outer(func):
        def inner(*args,**kwargs):
            name = input('name:')
            password = input('password:')
            if name == 'a' and password == '123':
                func(*args,**kwargs)
            else:
                print('失败！')
        return inner
    return outer

# @login('qq')  # @的作用就是下面函数装入到login中， hi = login('qq')(hi) = inner
def hi(style):
    print('==欢迎进入==',style)

# b = henen()
a = login('qq')
print(a)
hello = a(hi)
print(hello)
hello('go')
# a()
# henen('3p') # inner()