python中餐馆订餐的代码

以下是一个简单的Python餐馆订餐系统的代码示例，包括初始化菜品信息、显示菜品信息、添加菜品到购物车、结算购物车等功能：

# 初始化菜品信息
menu = {
    1: {'name': '宫保鸡丁', 'price': 28, 'likes': 0, 'stock': 10},
    2: {'name': '鱼香肉丝', 'price': 25, 'likes': 0, 'stock': 8},
    3: {'name': '回锅肉', 'price': 30, 'likes': 0, 'stock': 5}
}

# 显示菜品信息
def show_menu():
    print('菜单编号\t菜名\t\t单价\t点赞数\t剩余份数')
    for k, v in menu.items():
        print(f'{k}\t\t{v["name"]}\t{v["price"]}\t{v["likes"]}\t{v["stock"]}')

# 添加菜品到购物车
def add_to_cart(cart, dish_id, count):
    if dish_id not in menu:
        print('菜品不存在')
        return
    dish = menu[dish_id]
    if dish['stock'] < count:
        print('库存不足')
        return
    cart[dish_id] = cart.get(dish_id, 0) + count
    dish['stock'] -= count
    print(f'{dish["name"]}已加入购物车')

# 结算购物车
def checkout(cart):
    total_price = 0
    for dish_id, count in cart.items():
        dish = menu[dish_id]
        total_price += dish['price'] * count
    print(f'总价：{total_price}')
    payment = int(input('请输入付款金额：'))
    if payment < total_price:
        print('付款金额不足')
        return
    print(f'找零：{payment - total_price}')
    for dish_id, count in cart.items():
        dish = menu[dish_id]
        dish['likes'] += count
    cart.clear()
    print('结账成功')

# 主程序
def main():
    cart = {}
    while True:
        print('1.查看菜单 2.加入购物车 3.结算购物车 4.退出')
        choice = input('请选择操作：')
        if choice == '1':
            show_menu()
        elif choice == '2':
            dish_id = int(input('请输入菜品编号：'))
            count = int(input('请输入数量：'))
            add_to_cart(cart, dish_id, count)
        elif choice == '3':
            checkout(cart)
        elif choice == '4':
            break
        else:
            print('无效操作')

if __name__ == '__main__':
    main()