user_dic ={'username':None,'login':False}

def auth_func(func):

    def wrapper(*args,**kwargs):

        if user_dic['username'] and user_dic['login']:

            res = func(*args,**kwargs)

            return res

        username = input('账号:').strip()

        passwd = input('密码:').strip()

        if username == 'abcd' and passwd == '':

            user_dic['username'] = username

            user_dic['login'] = True

            print('登陆成功！')

            res=func(*args,**kwargs)

            return res

        else:

            print('用户名或密码错误')

    return wrapper

@auth_func

def index():

    print('欢迎光临本网站')

@auth_func

def home(name):

    print('欢迎%s回家' % name)

index()

home('小明')

账号:abcd

密码:123456

登陆成功！

欢迎小明回家

Process finished with exit code 0

user_list=[{'name':'abcd','passwd':''},

           {'name':'abd','passwd':''},

           {'name':'acc','passwd':''},

           {'name':'asdfg','passwd':''}

]

user_dac ={'username':None,'login':False}           # 获取刚开始登陆之前的状态

def auth_func(func):

    def wrapper(*args,**kwargs):

        if user_dac['username'] and user_dac['login']:   # 获取刚开始登陆之前的状态，是否已登录

            res = func(*args,**kwargs)

            return res

        username = input('账号:').strip()

        passwd = input('密码:').strip()

        for user_dic in user_list:

            if username == user_dic['name'] and passwd == user_dic['passwd']:

                user_dac['username'] = username

                user_dac['login'] = True

                print('登陆成功！')

                res=func(*args,**kwargs)

                return res

        else:

            print('用户名或密码错误')

    return wrapper

@auth_func

def index():

    print('欢迎光临本网站')

@auth_func

def home(name):

    print('欢迎%s回家' % name)

index()

home('sb')

账号:abd

密码:123

登陆成功！

欢迎光临本网站

欢迎sb回家

Process finished with exit code 0