python-验证功能的装饰器示例

user_list=[
    {'name':"alex","pwd":'123'},
    {'name':'tang','pwd':'123'},
    {'name':'sb','pwd':'123'}
]
current_dict={'username':None,'login':False}
def auth(auth_type):
    def auth_func(func):
        def wrapper(*args,**kwargs):
            print("认证类型", auth_type)

            if auth_type == 'filedb':

                if current_dict['username'] and current_dict['login']:#判断用户的登陆状态
                    res = func(*args, **kwargs)
                    return res
                username=input("用户名").strip()#strip()函数去除字符串两边的空格
                password=input('密码').strip()

                for item in user_list:
                    if  username==item['name'] and password==item['pwd']:
                        current_dict['username']=username#改变用户的登陆状态,改变后就不需要每次都进行输入
                        current_dict['login']=True
                        res=func(*args,**kwargs)
                        return res
                    else:
                        print("用户名或密码错误")
            elif auth_type=="ldap":
                print("hahhaha")

        return wrapper

    return auth_func





@auth(auth_type="filedb")#auth_func=auth(auth_type="filedb")--->@auth_func 附加了一个auth_type---->index=auth_func(index)
def index():
    print("欢迎来到京东")

@auth(auth_type='')
def home(name):
    print("我的个人中心%s"%(name))

@auth(auth_type='filedb')
def shop_car(name):
    print("%s我的购物车"%(name))

print("after---->",current_dict)
index()
print('after---->',current_dict)
home("alex")
shop_car("产品经理")
















# dict_user={"username":None,"login":False}
#
# def auth_func(func):
#     def wrapper(*args,**kwargs):
#         if dict_user['username'] and dict_user['login']:
#             res = func(*args, **kwargs)
#             return res
#         username=input("用户名").strip()#strip()函数去除字符串两边的空格
#         password=input('密码').strip()
#         if username=="sb" and password=="123":
#             dict_user['username']=username
#             dict_user['login']=True
#             res=func(*args,**kwargs)
#             return res
#         else:
#              print("用户名或密码错误")
#
#     return wrapper
#
#
#
#
#
#
# @auth_func
# def index():
#     print("欢迎来到京东")
#
# @auth_func
# def home(name):
#     print("我的个人中心%s"%(name))
#
# @auth_func
# def shop_car(name):
#     print("%s我的购物车"%(name))
#
# index()
# home("alex")
# shop_car("产品经理")
#
#









# a="123"
# b='1'
# v=b.join(a)##b join a
# print(v)