购物小程序改进版（只用了list）

#_author: FeiSir
#data: 2019/9/30

#利用列表嵌套

#购物列表

goods_list = [
         ('iPhone 11 Pro', 9999),
         ('iPhone 11', 6299),
         ('华为手环', 399),
         ('python  book', 85),
         ('cup ', 59),
         ('pen', 5)
         ]
salary_of_shopper = input("Please input your salary:")
if salary_of_shopper.isdigit():
    money_shopper = int(salary_of_shopper)
    flag = True
    buyed_list = []
    while flag:
        print("可购物列表为：")
        # for i in range(len(goods)):
        #     print("%d、%s  %d"%(i+1,goods[i][0],goods[i][1]))
        for  i,j in enumerate(goods_list,1):
            print(i,":",j)
        index_choice = input('Please input the index of goods you want(or quit:Q):')
        if index_choice.isdigit():
            index_choice=int(index_choice)
            if index_choice > 0 and index_choice< len(goods_list):
                if goods_list[index_choice][1] > money_shopper:
                    print("余额不足，￥%d" % (money_shopper - goods_list[index_choice][1]))
                    # flag_continue = input('是否继续购物（Y/N）')
                    # if flag_continue == "N":
                    #     flag = False
                else:
                    buyed_list.append(goods_list[index_choice-1])
                    money_shopper -= goods_list[index_choice-1][1]
                    print("已将 %s加入您的购物车，余额为￥%d" % (goods_list[index_choice-1][0], money_shopper))
                    # flag_continue = input('是否继续购物（输入N退出，其余任意键继续购物）')
                    # if flag_continue == "N":
                    #     flag = False
            else:
                print("编号不存在")
        elif index_choice == "Q":
            the_number_buyed = len(buyed_list)
            print("-----您购买的商品为：----------")
            # print(buyed_list)
            for i, j in enumerate(buyed_list, 1):
                print(i, ":", j)
            print("""
            -----您的余额为：%d,欢迎下次购买!
            """ % money_shopper)
            break
        else:
            print("非法输入")
else:
    print("非法输入")