结构型模式---适配器模式

# -*- coding:utf-8 -*-
"""
File Name: shi_pei_qi
Author: wabi
Data: 2020/4/24 16:01
-----------------------
Info:
    适配器模式
    参考: 精通python设计模式
    适配器实现两个不兼容接口之间的兼容

-----------------------
Change Activity:
    2020/4/24: create
"""
import logging

logger = logging.getLogger(__file__)


class Synthesizer:
    def __init__(self,
                 name):
        self.name = name

    def __str__(self):
        return 'the {} synthesizer'.format(self.name)

    def play(self):
        return '一起玩耍,可以吗'


class Human:
    def __init__(self,
                 name):
        self.name = name

    def __str__(self):
        return '姓名:{}'.format(self.name)

    def speak(self):
        return self.name + '：你好'


class Computer:
    def __init__(self,
                 name):
        self.name = name

    def __str__(self):
        return '{} 电脑'.format(self.name)

    def execute(self):
        return self.name + ": 执行一个程序"


class Adapter:
    """
    适配器
    """

    def __init__(self,
                 obj,
                 adapter_methods):
        self.obj = obj
        self.__dict__.update(adapter_methods)   # 增加需要配适配的方法

    def __str__(self):
        return str(self.obj)

    def __getattr__(self, item):
        """
        访问obj属性
        :param item:
        :return:
        """
        return getattr(self.obj, item)


def main():
    objects = [Computer('华为')]
    synth = Synthesizer('moog')
    human = Human('小明')
    objects.append(Adapter(synth, dict(execute=synth.play)))
    objects.append(Adapter(human, dict(execute=human.speak)))
    for obj in objects:
        print('对象={}\nexecute:{}'.format(str(obj), obj.execute()))
        print(obj.name)


if __name__ == '__main__':
    main()