1 user_list = [ 2 {'name':'alex','passwd':123}, 3 {'name':'xiaopang','passwd':123}, 4 {"name":'haha','passwd':1234} 5 ] 6 user_dic = {'user_name':None,"login":False} 7 def auth(auth_type = 'sqlite'): 8 def add_func(func): 9 def wrapper(*args, **kwargs): 10 if auth_type == 'sqlite': 11 print('登录类型为sqlite') 12 if user_dic['user_name'] and user_dic['login']: 13 res = func(*args, **kwargs) 14 return res 15 username = input("亲,请输入你的用户名: ").strip() 16 passwd = input("请输入密码").strip() 17 for i in user_list: 18 if username == i['name'] and passwd == str(i['passwd']): 19 user_dic['user_name'] = username 20 user_dic['login'] = True 21 res = func(*args, **kwargs) 22 return res 23 else: 24 print("您输入的用户名或者密码错误") 25 elif auth_type == 'mysql': 26 print('现在没学,不会') 27 28 return wrapper 29 return add_func 30 @auth(auth_type='sqlite') # 相当于先执行了auth(auth_type = 'sqlite') 然后返回函数名add_func; 就相当于@add_func 31 def index(): 32 print('欢迎来到京东商城') 33 @auth(auth_type='sqlite') 34 def home(name): 35 print("%s 欢迎回到主页" % name) 36 @auth(auth_type='sqlite') 37 def shopping_car(name): 38 print('%s的购物车里面有[手机、电脑、汽车]'%name) 39 index() 40 home('liyulu') 41 shopping_car('liyulu') 42 输出: 43 登录类型为sqlite 44 亲,请输入你的用户名: sb 45 请输入密码123 46 您输入的用户名或者密码错误 47 登录类型为sqlite 48 亲,请输入你的用户名: alex 49 请输入密码123 50 liyulu 欢迎回到主页 51 登录类型为sqlite 52 liyulu的购物车里面有[手机、电脑、汽车]