这个代码怎么写啊，商品检测数量

li = []


def shopping():
    all_total = 0
    goods_dict = {"五常大米": 45.00, "五丰河粉": 29.90, "农家大米": 45.00, "纯香香油": 22.90}
    print("名称       价格")
    print("按q退出")
    for name, price in goods_dict.items():
        print(f"{name}      {price}￥")

    while True:
        cart_dict = {}
        goods_name = input("请输入选购的商品名称：\n")

        if goods_name == 'q':
            break
        else:
            goods_num = int(input("请输入选购的数量：\n"))
            if goods_num < 1:
                goods_num = 1
                print(f"商品选购数量错误，已自动默认为1")

            cart_dict['名称'] = goods_name
            cart_dict['数量'] = goods_num
            li.append(cart_dict)

    for i in li:
        total = goods_dict[i['名称']] * i['数量']
        all_total += total

    print(f"总消费 {all_total}￥")


if __name__ == '__main__':
    shopping()