Python笔记(三)购物车小程序

product_list = [    ['Apple',10],    ['Banner',6],    ['Peach',12],    ['Orage',14],    ['Grape',11]]shopping_list = []salary = input("请输入你的余额:")if salary.isdigit():    salary = int(salary)    while True:        for index, item in enumerate(product_list):            print(index,item)        user_choice = input("请输入商品的编号:")        if user_choice.isdigit():            user_choice = int(user_choice)            if user_choice < len(product_list) and user_choice >= 0:                p_item = product_list[user_choice]                if p_item[1] < salary:                    shopping_list.append(p_item)                    salary -= p_item[1]                    print("您购买的%s已加入购物车，余额剩余:\033[31;1m%s\033[0m" %(p_item,salary))                else:                    print("\033[41;1m你的余额不足!\033[0m")            else:                print("找不到相应的商品编号!")        elif user_choice == 'q':            print("购物车内的商品如下：%s\n您的余额剩余:%s" %(shopping_list,salary))            for i in shopping_list:                print(i)            exit()        else:            print("您输入的选项错误!")else:    print("Error！")