python食堂管理系统代码

由于食堂管理系统的具体功能和实现方式可能会有所不同，因此下面提供一个简单的 Python 食堂管理系统代码作为参考。

import time

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

class Menu:
    def __init__(self):
        self.items = []

    def add_item(self, name, price):
        self.items.append((name, price))

    def get_items(self):
        return self.items

class Kitchen:
    def __init__(self):
        self.orders = []

    def add_order(self, order):
        self.orders.append(order)

    def get_orders(self):
        return self.orders

class Cashier:
    def __init__(self, menu):
        self.menu = menu

    def take_order(self):
        order_list = []
        menu_items = self.menu.get_items()
        print("Please choose from the following items:")
        for i, item in enumerate(menu_items):
            print("{0}. {1} (${2})".format(i+1, item[0], item[1]))
        print("Enter 'done' to finish ordering.")
        while True:
            choice = input("Enter the item number or 'done': ")
            if choice == 'done':
                break
            elif not choice.isdigit() or int(choice) <= 0 or int(choice) > len(menu_items):
                print("Invalid input. Please try again.")
            else:
                item = menu_items[int(choice)-1]
                quantity = int(input("Enter the quantity of {0}: ".format(item[0])))
                order_list.append(Order(item[0], item[1], quantity))
        return order_list

    def calculate_total(self, order_list):
        total = sum([order.price * order.quantity for order in order_list])
        return total

    def process_payment(self, total):
        print("Your total is ${0:.2f}.".format(total))
        while True:
            payment = input("Enter the payment amount: $")
            if not payment.replace('.','').isdigit() or float(payment) < total:
                print("Invalid input. Please try again.")
            else:
                break
        change = float(payment) - total
        print("Thank you for your payment. Your change is ${0:.2f}.".format(change))

class Customer:
    def __init__(self, name, cashier, kitchen):
        self.name = name
        self.cashier = cashier
        self.kitchen = kitchen
        self.order_list = []

    def place_order(self):
        self.order_list = self.cashier.take_order()
        for order in self.order_list:
            self.kitchen.add_order(order)

    def check_status(self):
        orders = self.kitchen.get_orders()
        if len(orders) == 0:
            print("Your order is being processed. Please wait.")
        else:
            print("Your order is ready. Enjoy your meal!")
            total = self.cashier.calculate_total(self.order_list)
            self.cashier.process_payment(total)

def main():
    # Initialize the menu
    menu = Menu()
    menu.add_item("Hamburger", 6.99)
    menu.add_item("Cheeseburger", 7.99)
    menu.add_item("Fries", 2.99)
    menu.add_item("Salad", 4.99)

    # Initialize the cashier and kitchen
    cashier = Cashier(menu)
    kitchen = Kitchen()

    # Initialize the customer
    customer = Customer("John", cashier, kitchen)

    # Place an order and check status
    customer.place_order()
    time.sleep(5)  # Simulate the kitchen preparing the order
    customer.check_status()

if __name__ == '__main__':
    main()

该代码包含了 `Order`、`Menu`、`Kitchen`、`Cashier` 和 `Customer` 等类，并且通过这些类实现了食堂管理系统的基本功能，包括查看菜单、下订单、结账等等。具体实现过程可以参考代码注释。需要注意的是，该代码仅供参考，实际场景中可能需要根据具体需求进行修改或扩展。