flag = True

while flag:

    li = ['手机', '电脑', '鼠标垫', '游艇']

    for i in li:

        print('{}\t{}'.format(li.index(i) + 1, i))

    num_of_choose = input('请输入选择的商品序号(按Q退出,不区分大小写)：')

    if num_of_choose.isdigit():

        num_of_choose = int(num_of_choose)

        if num_of_choose > 0 and num_of_choose <= len(li):

            print(li[num_of_choose - 1])

        else:print('请输入有效数字！')

    elif num_of_choose.upper() == 'Q':

        flag = False

    else:

        print('请输入整数！')

goods = [

    {"name": "电脑", "price": 1999},

    {"name": "鼠标", "price": 10},

    {"name": "游艇", "price": 20},

    {"name": "美女", "price": 998}

    ]

total = 0

flag = True

money = input('请输入您的总资产：')

while flag:

    for i in goods:

        print('{}\t{}\t{}'.format(goods.index(i) + 1, i['name'], i['price']))

    num_of_choose = input('请选择商品的序号(按Q退出,不区分大小写)：')

    if num_of_choose.isdigit():

        num_of_choose = int(num_of_choose)

        if num_of_choose > 0 and num_of_choose <= len(goods):

            total = total + goods[num_of_choose - 1]['price']

            if total < int(money):

                print('成功加入购物车!')

                print('你当前选择的商品为：{}\t价格为：{}'.format(goods[num_of_choose - 1]['name'],goods[num_of_choose - 1]['price']))

                print('总价为：{}'.format(total))

            else:

                print('账户余额不足!')

                flag = False

        else:print('请输入有效数字!')

    elif num_of_choose.upper() == 'Q':

        flag = False

    else:print('请输入整数!')

# 把货物放在货架上

li = [

    {'name':'苹果', 'price':1},

    {'name':'香蕉', 'price':1},

    {'name':'西瓜', 'price':10},

    {'name':'橘子', 'price':0.5},

]

shopping_car = {}           # 建立一个空购物车

print('欢迎光临水果店')

money = input('让我看看你有多少钱:')

if money.isdigit() and int(money) > 0:

    while 1:

        for i,k in enumerate(li):

            print('序号:{}\t商品:{}\t价格:{}'.format(i, k['name'], k['price']))

        choose = input('请输入您要购买的商品序号:')

        if choose.isdigit() and int(choose) < len(li):

            num = input('您要购买的商品数量:')

            if num.isdigit():

                if int(money) > li[int(choose)]['price'] * int(num):

                    money = int(money) - li[int(choose)]['price'] * int(num)

                    if li[int(choose)]['name'] in shopping_car:

                        shopping_car[li[int(choose)]['name']] += int(num)       # 若商品已经在购物车中, 则增加数量

                    else:

                        shopping_car[li[int(choose)]['name']] = int(num)

                    print('购物车中的商品有:{}\t\t您的余额为:{}'.format(shopping_car,money))

                else:

                    print('余额不足')

                    break

        else:

            print('您输入的序号有误')