Python购物车

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第一个Python小程序，购物车

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'''
 购物车
'''
li = [
        {'name': '苹果', 'price': 10},
        {'name': '香蕉', 'price': 20},
        {'name': '西瓜', 'price': 30}
    ] #定义一个水果的元组
#把货物放在货架上
shopping_car = {}  #定义一个购物车的集合
print('欢迎来到水果店')
money = input('让我看看你的钱')
if money.isdigit() and int(money) > 0:  #判断money是数字并且>0
    while(1):
        for i,k in enumerate(li):
            print('序号{},商品{}，价格{}'.format(i,k['name'],k['price']))
        choose = input('请输入序号')
        if choose.isdigit() and int(choose) < len(li):
            num = input('您想要购买的商品数量')
            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']] = shopping_car[li[int(choose)]['name']] + int(num)
                    else:
                        shopping_car[li[int(choose)]['name']] = int(num)
                    print('购物车中有{}，您的余额为{}'.format(shopping_car,money))
                else:
                    print('金额不足')
                    break

else:
         print('输入正确序号')