Python：Day05 作业

购物车：

product_list = [['iphone6s',5800],['mac book',9800],['coffee',32],['book',80],['bike',1500]]
shopping_cart = []
money = input('please input your money:')

if money.isdigit():
    money=int(money)
    while True:
        for i, v in enumerate(product_list, 1):
            print(i, v)
        product_number  = input('请输入产品编号[退出：q]：')
        if product_number.isdigit():
            product_number=int(product_number)
            if product_number>0 and product_number<6:
                select_product = product_list[product_number-1]
                if money >= select_product[1] :
                    money -= select_product[1]
                    shopping_cart.append(select_product)
                    print('已将%s加入购物车'%select_product[0],'您的余额为%s元钱'%money)
                else:
                    print('余额不足,还剩%s'%money)
            else:
                print('序号不存在！')
        elif product_number == 'q':
            print('-------------您已购买如下商品-------------------')
            for i in shopping_cart:
                print(i)
            print('您的余额为%s元钱'%money)
            print('欢迎下次光临')
            break
        else:
            print('invaild number!')
else:
    print('invaild input!')