函数进阶_装饰器进阶

#装饰器的进阶
    #functools wraps
    #带参数的装饰器
    #多个装饰器修饰同一个函数

#周末的作业---->三级菜单作业还没写

#1.编写装饰器,为多个函数加上认证的功能(用户的账号和密码来源于文件)
#要求登陆成功一次,后续的函数都无需在输入用户名和密码

# def warpper():
#
#     def inner():
#
#         ret = func()
#         return ret
#     return inner
#
# @warpper
# def qqxing():
#     print("username, password")
# qqxing()
FLAG = False
def login(func):
    def inner(*args, **kwargs):
        global FLAG
        '''登陆程序'''
        if FLAG:
            ret = func(*args, **kwargs)
            return ret

        else:
            username = input("username:")
            password = input("password:")

            if username == "boss" and password == "222":
                FLAG = True
                ret = func(*args,**kwargs)
                return ret
            else:
                print("登陆失败")
    return inner

@login
def shoplist_add():
    print("增加一件物品")
@login
def shoplist_del():
    print("删除一件物品")

shoplist_add()