用Python写购物车菜单
shop_list=[('手机',5000),('电脑',4000),('咖啡',50),('耳机',150),('笔记本',10)] myshop_list=[] salary=input('请输入您的存钱：') if salary.isdigit(): salary=int(salary) for index,items in enumerate(shop_list): print(index,items) while True: shop_choice=input('请输入您的要购买的商品：') if shop_choice.isdigit(): shop_choice=int(shop_choice) if 0<=shop_choice<len(shop_list): if shop_list[shop_choice][1]<int(salary): myshop_list.append(shop_list[shop_choice]) salary-=shop_list[shop_choice][1] print('您购买了{},花费{}元钱，还剩余{}元钱'.format(shop_list[shop_choice][0],shop_list[shop_choice][1],salary)) else: print('您的余额不足购买{},请重新选择！'.format(shop_list[shop_choice][0]),end="") else: print('您的输入有误，',end="") elif shop_choice=='q': print('您已退出系统...') print('----您已购买的商品----') for i in myshop_list: print(i) print('----您的剩余存款为：{}元----'.format(salary)) exit() else: print('您的输入有误，',end="") elif salary=='q': print('您已退出系统...') exit() else: print('您的输入有误，请从新输入您的存钱：',end="") salary=input()