python餐厅点餐系统代码

以下是一个简单的Python餐厅点餐系统的示例代码。请注意，这只是一个基于命令行的简单实现，实际的餐厅点餐系统可能需要更多功能和复杂性

class MenuItem:
    def __init__(self, name, price):
        self.name = name
        self.price = price

class Order:
    def __init__(self):
        self.items = []
    
    def add_item(self, item):
        self.items.append(item)
    
    def remove_item(self, item):
        if item in self.items:
            self.items.remove(item)
        else:
            print("Item not found in the order.")
    
    def calculate_total(self):
        total = 0
        for item in self.items:
            total += item.price
        return total

class Restaurant:
    def __init__(self):
        self.menu = {
            "burger": MenuItem("Burger", 5.99),
            "pizza": MenuItem("Pizza", 8.99),
            "salad": MenuItem("Salad", 4.99),
            # Add more items to the menu if needed
        }
    
    def display_menu(self):
        print("Menu:")
        for item_name, item in self.menu.items():
            print(f"{item_name}: ${item.price}")
    
    def place_order(self):
        order = Order()
        while True:
            self.display_menu()
            choice = input("Enter item to order (or 'done' to finish): ")
            if choice == 'done':
                break
            elif choice in self.menu:
                order.add_item(self.menu[choice])
            else:
                print("Invalid item. Please choose from the menu.")
        return order

# 使用示例
restaurant = Restaurant()
new_order = restaurant.place_order()

print("Your order:")
for item in new_order.items:
    print(f"- {item.name}: ${item.price}")
print(f"Total: ${new_order.calculate_total()}")