Use the list and while to Build Shop car

#Author: Gordon
salary = int(input("请输入你的工资："))
goods = [('0',"Iphone",5000),('1','Laptop',3500),('2','Coffee',20),('3','Chocolate',20)]
bought =[]
while True:
    want = input("请输入要买的商品编号：")
    if want.isdigit():
        want = int(want)
        if want > 0 and want < len(goods):
            if salary > goods[want][2]:
                bought.append(goods[want][1])
                print(goods[want][1], "商品已经加入到你的购物车！")
                salary = salary - goods[want][2]
                print("你的余额还有：", salary)
            else:
                print("您的余额已经不足")
        else:
            print("对不起，我们没有这件物品")
    elif want == 'q':
        break
    else:
        print("这个无效的option")
print("你已经买了",bought)
print("你的余额是：",salary)