def buy_goods(name, price, amount): global shopping_car count = int(input(f'请输入您要购买{name}的数量：')) amount += count shopping_car[name][1] = amount shopping_car[name][2] = amount * price return amount 然后在主程序中调用这个函数即可： 复制 shopping_car = {'电脑': [1999, 0, 0], '鼠标': [10, 0, 0], '美女': [50, 0, 0], '火箭': [20000000, 0, 0]} goods = ['电脑', '鼠标', '美女', '火箭'] for i in range(len(goods)): print(i + 1, goods[i]) num = int(input('请输入您要购买的商品序号：')) if num == 1: a = buy_goods('电脑', 1999, a) elif num == 2: c = buy_goods('鼠标', 10, c) elif num == 3: e = buy_goods('美女', 50, e) elif num == 4: g = buy_goods('火箭', 20000000, g)，继续写一段删除购物车的代码

可以在主程序中定义一个函数来删除购物车中的商品，具体实现如下：

def delete_goods(name):
    global shopping_car
    if name in shopping_car.keys():
        shopping_car[name][1] = 0
        shopping_car[name][2] = 0
        print(f'{name}已从购物车中删除。')
    else:
        print(f'购物车中没有{name}。')

然后在主程序中调用这个函数即可：

goods = ['电脑', '鼠标', '美女', '火箭']

for i in range(len(goods)):
    print(i + 1, goods[i])

num = int(input('请输入您要购买的商品序号：'))

if num == 1:
    a = buy_goods('电脑', 1999, a)
elif num == 2:
    c = buy_goods('鼠标', 10, c)
elif num == 3:
    e = buy_goods('美女', 50, e)
elif num == 4:
    g = buy_goods('火箭', 20000000, g)

delete = input('是否删除购物车中的某个商品？(Y/N)')
if delete.upper() == 'Y':
    name = input('请输入要删除的商品名称：')
    delete_goods(name)