login_status = False  # 登录状态

with open('账户信息', 'r') as f_read_self:

    jingdong = f_read_self.readline().strip()

    jingdong = eval(jingdong)   # 内置函数eval()的作用是把一个字符串转换为字典

    for n, m in jingdong.items():

        JD_name = n

        JD_pwd = m

with open('账户信息（微信）', 'r') as f_read_wechat:

    wechat = f_read_wechat.readline().strip()

    wechat = eval(wechat)

    for n, m in wechat.items():

        wechat_name = n

        wechat_pwd = m

def login(auth_type="jingdong"):   # 判断页面类型，默认进去是京东登录页面

    def page(dis_play):

        global login_status    # 声明全局变量

        def login_type():

            global login_status     # 声明全局变量

            if not login_status:    # 如果是未登陆状态

                if auth_type == "jingdong":

                    username = input("Username:")

                    passwd = input("Passwd:")

                    if JD_name == username and JD_pwd == passwd:

                        print("welcome ....")

                        dis_play()   # 登陆成功执行页面函数，显示内容

                        login_status = True  # 改登陆状态为 True

                    else:

                        print("账户或密码错误,请重新输入")

                elif auth_type == "wechat":

                    username = input("Username:")

                    passwd = input("Passwd:")

                    if wechat_name == username and wechat_pwd == passwd:

                        print("welcome ....")

                        dis_play()  # 登陆成功执行页面函数，显示内容

                        login_status = True  # 改登陆状态为 True

                    else:

                        print("账户或密码错误")

            else:

                print("已登陆")

        return login_type   # 返回login_type 的内存地址，用于指向函数对象

    return page

@login()

def home():   # 主页面

    print("welcome to home page")

@login()

def book():  # 书店

    print("welcome to home page")

@login(auth_type="wechat")

def finance():  # 金融

    print("welcome to home page")

while True:

    user_input = input('请输入:\n1: [主页] \n2: [书店] \n3: [金融] \nQ:退出')

    if user_input == '1':

        home()

    elif user_input == '2':

        book()

    elif user_input == '3':

        finance()

    elif user_input == 'Q':

        break