餐馆菜单管理系统代码是什么，用python

好的，这里提供一个简单的Python代码示例，实现餐馆菜单管理系统的基本功能。代码如下：

# 定义菜品类
class Dish:
    def __init__(self, name, price, description):
        self.name = name
        self.price = price
        self.description = description

    def __str__(self):
        return "{} (${:.2f}): {}".format(self.name, self.price, self.description)

# 定义菜单类
class Menu:
    def __init__(self):
        self.dishes = []

    def add_dish(self, dish):
        self.dishes.append(dish)

    def remove_dish(self, dish):
        self.dishes.remove(dish)

    def get_dishes(self):
        return sorted(self.dishes, key=lambda x: x.price)

# 定义顾客类
class Customer:
    def __init__(self, name):
        self.name = name
        self.order = {}

    def add_dish(self, dish, quantity):
        if dish in self.order:
            self.order[dish] += quantity
        else:
            self.order[dish] = quantity

    def remove_dish(self, dish):
        del self.order[dish]

    def get_order(self):
        return self.order

    def get_total_price(self):
        return sum(dish.price * quantity for dish, quantity in self.order.items())

# 初始化菜单
menu = Menu()
menu.add_dish(Dish("Beef Noodle", 10.99, "Hand-pulled noodles with braised beef"))
menu.add_dish(Dish("Hotpot", 20.99, "Spicy hotpot with various ingredients"))
menu.add_dish(Dish("Fried Rice", 8.99, "Fried rice with egg, green onion and soy sauce"))

# 初始化顾客
customer = Customer("John")

# 顾客下单
customer.add_dish(menu.get_dishes()[0], 2)
customer.add_dish(menu.get_dishes()[1], 1)

# 输出菜单和订单
print("Menu:")
for dish in menu.get_dishes():
    print(dish)
print("Order:")
for dish, quantity in customer.get_order().items():
    print("{} x {} = ${:.2f}".format(dish.name, quantity, dish.price * quantity))
print("Total price: ${:.2f}".format(customer.get_total_price()))

在这个示例中，我们定义了菜品类（Dish）、菜单类（Menu）和顾客类（Customer），并通过这些类实现了餐馆菜单管理系统的基本功能。我们通过实例化这些类，并调用相关方法，来添加菜品、下单、结账等操作。当然，这个示例只是一个简单的示例，实际应用中需要根据实际需求进行修改和扩展。