"""
实例：
汤宝宝炒西红柿鸡蛋。
"""

from abc import ABC, abstractmethod


class Dish(ABC):
    @abstractmethod
    def prepare_ingredients(self):
        pass

    @abstractmethod
    def cook(self):
        pass

    @abstractmethod
    def serve(self):
        pass

    def do_cooking(self):
        print("第一步：", end="")
        self.prepare_ingredients()
        print("第二步：", end="")
        self.cook()
        print("第三步：", end="")
        self.serve()

class TomatoEggDish(Dish):
    def prepare_ingredients(self):
        print("准备西红柿和鸡蛋。")

    def cook(self):
        print("炒西红柿和鸡蛋。")

    def serve(self):
        print("装盘，西红柿鸡蛋炒好了。")

if __name__ == "__main__":
    print("========== 模板方法模式 ==========")
    dish = TomatoEggDish()
    dish.do_cooking()
    print("\n======== 模板方法模式结束 ========")