使用python的数列相关的知识，书写购物车程序

要求

1、启动程序后让用户输入余额，并打印商品列表
2、用户通过输入编号购买商品
3、用户选择商品购买后，根据余额判断成功或者失败，给出对应提示
4、可以随时退出，退出后打印账号余额以及购买的商品列表

构思

1、首先，用户余额需要进行存储，用户购买的物品需要进行存储在数组中
2、用户购买成功后，将购买的物品放入物品集合，并用总金额减去余额
3、如果失败，给出失败提示，并打印余额
4、用户选择继续后，无论成功失败，都可以继续购买

代码

# 用户输入工资balance = int(input("Please input balance:"))# 定义衣服的数组clothes = [["pants",100],["T-shirt",50],["skirt",20]]# 个人所得，包括金钱和获取的物品haveGoods = [balance,[]]flag = Truewhile flag:    # 打印衣服列表    print("The clothes list is as follows")    print("______clothesList______")    i = 1;    for c in clothes:        print(‘The number:‘,i,":",c)        i += 1    # 用户输入商品编号    code = int(input("Please choose the number:"))    # 判断钱是否够用    if clothes[code-1][1] <= haveGoods[0]:        # 在自己的购物清单中加入已购物品        haveGoods[1].append(clothes[code-1])        # 减去花费的金钱        haveGoods[0] -= clothes[code-1][1]        print("You have successfully purchased!")        print("Your account balance is:",haveGoods[0])    else:        print("Your account balance is insufficient!")        print("Your account balance is:",haveGoods[0])    judge = input("You can press any button to continue,or input ‘n‘ to leave:")    if judge == "n":        flag = Falseprint("Your account balance is:",haveGoods[0])print("Your shopping list is as follows:")print("______clothesList______")for h in  haveGoods[1]:    print(h)