lower版购物车模拟

goods = [{"name": "小哥哥", "price": 1999},
         {"name": "润滑油", "price": 100},
         {"name": "情趣玩具", "price": 200},
         {"name": "杜蕾斯", "price": 60},
         {"name": "冈本", "price": 40},
         {"name": "少妇", "price": 500},
         {"name": "人妻", "price": 299},
         {"name": "学生", "price": 1998}]
p_names = [i for i in goods]        #创建商品名列表
count = []                          #创建计数列表
for i in range(len(goods)):
    count.append(0)                 #为计数列表添加元素
    print("{2},{0},{1}".format(goods[i]["name"], goods[i]["price"], i + 1))           #打印所有商品名
def buy():
    ##确认购买
    global balance
    while 1:
        check = input("说吧,看上哪个了:")
        if check.isdigit() and 0 < int(check) < len(goods) + 1:     #确认正确输入
            count[int(check) - 1] +=1                    #为商品个数加一
            if balance <= 0:
                print("别选了,你钱都不够了!!")                    #余额不足提示
                continue
            else:
                balance -= goods[int(check) - 1]["price"]          #为客户计算余额
        elif check.upper() == "Q":                          #输入Q退出并打印购物车明细及余额
            j = 0
            for i in count:
                print("您总共选了{0},{1},{2}个!".format(p_names[j]["name"],p_names[j]["price"],i))
                j += 1
            print("您的余额为:{}".format(balance))
            break
        else:
            print("你的输入有误!!")
def look():
    while 1:
        demand = input("还有不清楚价格的吗?确认输入Q前往购买:")               #查看各商品序号
        if demand.isdigit() and 0 < int(demand) < len(goods) + 1:
            print("{0},{1}".format(goods[int(demand) - 1]["name"], goods[int(demand) - 1]["price"]))       #打印该商品明细
        elif demand.upper() == "Q":
            buy()
            break
        else:
            print("我看你是不想嗨了,重新输入!!")
while 1:
    global balance
    balance = input("兄dei你有多少钱啊?带你去嗨皮!!")
    if balance.isdigit():
        balance = int(balance)
        look()
        break
    else:
        print("别瞎输入,到底有多少钱??!")