购物车模板

#Author:xx

product_list=[
    ('iphone',5800),
    ('bike',800),
    ('dress',158),
    ('socks',30),
    ('mac pro',9800),
    ('watch',11058),
    ('bag',1158),
    ('cup',558),
]
salary=input("请输入预计消费数额：")
shopping_list=[]
if salary.isdigit():
    salary=int(salary)
    while True:
        for index,item in enumerate(product_list):
            print(index,item)
        user_choice=input("选择您想购买的商品编号：")
        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("%s 加入购物车，你的余额为 \033[31;1m%s\033[0m"%(p_item,salary))
                else:
                        print("你的余额只剩\033[44;1m[%s]\033[0m"%salary)
            else:
                    print("购物车中无[%s]选项!"%user_choice)
        elif  user_choice=='q':
            print("----------shopping list-----------")
            for p in shopping_list:
                print(p)
            print("您的余额为：\033[31;1m%s\033[0m"%salary)
            exit()
        else:
                print("invalid option...")