python22期第二天(作业)

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


shop_list=[]
ret = 0
def chongzhi ():                                        # 充值功能
    global Assets
    chongzhi_money=input("请输入你要充值的金额：")
    chongzhi_money=int(chongzhi_money)
    Assets = Assets + chongzhi_money

    print("您要充值的金额为：%s " %(Assets) )
    print("您的总月为：")

Assets=input("请输入你的资产总资产：").strip()
Assets=int(Assets)
print("您的总资产为%s:" %(Assets))
while True:
    for index,item_name in enumerate(goods):
        print(index,item_name)
    number=input("请输入你要购买的商品序列号：").strip()   # nubmer 代表的是商品的索引，也就是序列号
    number=int(number)                                 # 将输入的序号初始化为数字
    if number < len(goods) and number >= 0:
        p_item=goods[number]                           # 读取下表元素
        if p_item[‘price‘] <= Assets:                  # 判断购买物品的签署是否够
            shop_list.append(p_item)                   # 将商品添加到购物车列表
            #Assets -= p_item[‘price‘]
            print(shop_list)
            shop_value=input("请输入 yes/no 继续购买或者结算：").strip()   #输入yes/no 继续购买
            if shop_value == ‘yes‘:
                pass
            elif  shop_value == ‘no‘:
                print("您购买的商品列表为：%s"  %(shop_list))
                for list in shop_list:                 #对购买的商品进行价格核算
                    ret = ret + list[‘price‘]
                SY_money=Assets - ret                  #余额
                if Assets - ret >=0:                   #余额判断，如果小于0元进入到充值界面
                    print(‘您的余额为：%s  购买完毕已退出‘ % Assets)
                    exit()
                else :
                    goumai=input(‘余额不足请输入：yes进行充值/no 停止进行购买：‘)
                    if goumai == ‘yes‘:
                        chongzhi()
                    elif goumai == ‘no‘:
                        print(‘余额不足停止购买操作‘)
                        exit()