行为模式-模板方法

import time
from abc import ABCMeta, abstractmethod


# 抽象类
class Window(metaclass=ABCMeta):

    @abstractmethod
    def start(self):  # 原子操作/钩子操作
        pass

    @abstractmethod
    def repaint(self):  # 原子操作/钩子操作
        pass

    @abstractmethod
    def stop(self):  # 原子操作/钩子操作
        pass

    def run(self):
        """
        模板方法(具体方法)，这个大逻辑就不需要自己写了
        :return:
        """
        self.start()
        while True:
            try:
                self.repaint()
                time.sleep(1)
            except KeyboardInterrupt:
                break
        self.stop()


# 具体类
class MyWindow(Window):
    def __init__(self, msg):
        self.msg = msg

    def start(self):
        print(‘窗口开始运行！‘)

    def stop(self):
        print(‘窗口停止运行！‘)

    def repaint(self):
        print(self.msg)

MyWindow("hello").run()