Python用类实现咖啡机

以下是使用Python类实现咖啡机的示例代码：

class CoffeeMachine:
    def __init__(self, water, milk, coffee_beans, cups, money):
        self.water = water
        self.milk = milk
        self.coffee_beans = coffee_beans
        self.cups = cups
        self.money = money

    def make_coffee(self, water_needed, milk_needed, beans_needed, cost):
        if self.water < water_needed:
            print("Sorry, not enough water!")
        elif self.milk < milk_needed:
            print("Sorry, not enough milk!")
        elif self.coffee_beans < beans_needed:
            print("Sorry, not enough coffee beans!")
        elif self.cups < 1:
            print("Sorry, not enough cups!")
        else:
            print("I have enough resources, making you a coffee!")
            self.water -= water_needed
            self.milk -= milk_needed
            self.coffee_beans -= beans_needed
            self.cups -= 1
            self.money += cost

    def buy(self):
        choice = input("What do you want to buy? 1 - espresso, 2 - latte, 3 - cappuccino: ")
        if choice == "1":
            self.make_coffee(250, 0, 16, 4)
        elif choice == "2":
            self.make_coffee(350, 75, 20, 7)
        elif choice == "3":
            self.make_coffee(200, 100, 12, 6)
        else:
            print("Invalid choice!")

    def fill(self):
        self.water += int(input("How many ml of water do you want to add? "))
        self.milk += int(input("How many ml of milk do you want to add? "))
        self.coffee_beans += int(input("How many grams of coffee beans do you want to add? "))
        self.cups += int(input("How many disposable cups do you want to add? "))

    def take(self):
        print("I gave you $", self.money)
        self.money = 0

    def remaining(self):
        print("The coffee machine has:")
        print(self.water, "of water")
        print(self.milk, "of milk")
        print(self.coffee_beans, "of coffee beans")
        print(self.cups, "of disposable cups")
        print("$", self.money, "of money")

# 创建一个咖啡机对象
my_machine = CoffeeMachine(400, 540, 120, 9, 550)

# 与用户交互
while True:
    action = input("What would you like to do? (buy, fill, take, remaining, exit): ")
    if action == "buy":
        my_machine.buy()
    elif action == "fill":
        my_machine.fill()
    elif action == "take":
        my_machine.take()
    elif action == "remaining":
        my_machine.remaining()
    elif action == "exit":
        break
    else:
        print("Invalid action!")

该代码创建了一个名为`CoffeeMachine`的类，该类具有制作咖啡、购买咖啡、填充咖啡机、取走咖啡机中的钱和显示咖啡机状态等方法。在类的构造函数中，我们初始化了咖啡机的水、牛奶、咖啡豆、杯子和钱的数量。然后，我们使用一个无限循环与用户交互，直到用户选择退出。