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购物车程序

作业需求

数据结构:
goods = [
{"name": "电脑", "price": 1999},
{"name": "鼠标", "price": 10},
{"name": "游艇", "price": 20},
{"name": "美女", "price": 998},
......
]

功能要求:
基础要求:

1、启动程序后,输入用户名密码后,让用户输入工资,然后打印商品列表

2、允许用户根据商品编号购买商品

3、用户选择商品后,检测余额是否够,够就直接扣款,不够就提醒

4、可随时退出,退出时,打印已购买商品和余额

5、在用户使用过程中, 关键输出,如余额,商品已加入购物车等消息,需高亮显示


扩展需求:

1、用户下一次登录后,输入用户名密码,直接回到上次的状态,即上次消费的余额什么的还是那些,再次登录可继续购买

2、允许查询之前的消费记录

代码:

# -*- coding:utf-8 -*-
#Author:Kris
goods = [
{"name": "电脑", "price": 1999},
{"name": "鼠标", "price": 10},
{"name": "游艇", "price": 20},
{"name": "美女", "price": 998},
]
shopping_cart = []
_name = "kris"
_passworld = "abc1234"
name = input("请输入用户名:")
passworld = input("请输入密码:")
if name == _name and passworld ==_passworld:
    salary  = int(input("请输入你的工资(元):"))
else:
    print("您的用户名或密码错误")
    exit()
while True:
    print("--------商品列表--------")
    for index,i in enumerate (goods):
        print("%s.%s %s" %(index,i["name"],i["price"]))
    choice = (input("请输入你要买的商品编号或输入q退出:"))
    if choice.isdigit():
        choice = int(choice)
        if choice >=0 and choice <=len(goods):
            if (salary - int(goods[choice]["price"])) >= 0:
                shopping_cart.append(goods[choice])
                salary -= goods[choice]["price"]
                print("Adding  %s into the shopping cart" %(goods[choice]["name"]))
                print("还剩余%d元" %(salary) )
            else:
                print("您的余额不足")
        else:
            print("此商品编号不存在")
            if len(shopping_cart) > 0:
                print("----------您已购买以下商品-----------")
                for index2,i2 in enumerate (shopping_cart):
                    print(index2,i2)
    elif choice == 'q':
        exit()

 

posted @ 2018-04-21 15:23  kris12  阅读(245)  评论(0编辑  收藏  举报
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