Python设计模式——代理模式（Proxy）

Z时代
2024-01-10
分类：综合

python

书中的例子是：男A喜欢女A，但是不敢向其表白，所以委托男B为代理，代他送礼物给女A，实现这个需求的重点是，男A和女A是不互相直接接触的，都是通过代理男B，实现间接接触。

#encoding=utf-8
__author__ = 'kevinlu1010@qq.com'
from abc import ABCMeta, abstractmethod
class FemaleA():
    def __init__(self, name):
        self.name = name
class Male():
    __metaclass__ = ABCMeta
    @abstractmethod
    def send_flower(self):
        pass
    @abstractmethod
    def send_chocolate(self):
        pass
    @abstractmethod
    def send_book(self):
        pass
class MaleA(Male):
    def __init__(self, name, love_female):
        self.name = name
        self.love_female = FemaleA(love_female)
    def send_flower(self):
        print '%s送花给%s' % (self.name, self.love_female.name)
    def send_chocolate(self):
        print '%s送巧克力给%s' % (self.name, self.love_female.name)
    def send_book(self):
        print '%s送书给%s' % (self.name, self.love_female.name)
class Proxy(Male):
    def __init__(self, name, proxyed_name, love_female):
        self.name = name
        self.proxyed = MaleA(proxyed_name, love_female)
    def send_flower(self):
        self.proxyed.send_flower()
    def send_chocolate(self):
        self.proxyed.send_chocolate()
    def send_book(self):
        self.proxyed.send_book()
if __name__ == '__main__':
    p = Proxy('男B', '男A', '女A')
    p.send_book()
    p.send_chocolate()
    p.send_flower()