Python练习购物菜单

来源：互联网发布：查询淘宝购物记录编辑：程序博客网时间：2024/06/05 03:05

要求：
1.展现商品菜单及其价格
2.输入欲采购的总金额
3.输入商品名称进行采购，如果钱足够购买价格最低商品，则可一直购买，否则提示余额不足，是否要进行充值，如果进行充值则总金额增加，可以继续购物。
4.在开始部分要求对输入进行判断，必须为整形int，否则报错重新输入
5.在选择物品清单的时候，可以输入“？”号进行帮助，帮助内容包括list清单（当前购买的商品都有哪些，且中途充值了一共多少钱，当前余额还剩下多少。）、back（返回上一级菜单）、quit（退出系统）
这里写图片描述

import sysitem_list = ['aa','bb','cc','dd','ee','ff','gg','hh'] #商品列表price_list = [5,8,6,3,1,12,24,990]  #商品价格purchase_list = [] #购物车def latest_list():         for ab in purchase_list:        print ab #打印购物车清单dict()amount_money = 0one = 0for i in item_list:     print i,price_list[item_list.index(i)] #打印商品及商品价格while True:    try:        salary = int(raw_input("please input your salary:").strip())        break   #确定输入为整形    except ValueError:        print ("please input number,not string!")        continuewhile one == 0:    select_item = raw_input("please input your select item name below:").strip()    if select_item == '?':        help_action = raw_input("\033[32mlist  Display all of your purchase list.\n"                                "back  Return to the higher level menu.\n"                                "quit  Exit this purchase system.\n\033[0m"                                "Please input your decide:").strip()        if help_action == 'list':            latest_list()            print 'Your add top-up amount is:',amount_money            print 'Your remaining amount is now:',salary            continue        elif help_action == 'back':            one == 1        elif help_action == 'quit':            sys.exit()    elif select_item == 'quit':        sys.exit()    for a in item_list:        if a == select_item:            purchase_list.append(a)   #将买入的商品加入到购物车            salary = salary - price_list[item_list.index(a)]  #剩余金额            if salary < min(price_list):                last = raw_input("your money is not enough to buy another something! Will you to top-up (yes/no)?").strip()                if last == 'yes':                    top_money = int(raw_input("please input your top-up money:").strip())                    amount_money += top_money                    salary = salary + top_money  #充值金额                    one == 1                elif last == 'no':                    print ("Thank you ! byebye~~")                    sys.exit()            elif salary >= min(price_list):                continue

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