设计模式--策略模式的python实现

策略模式的python实现，相对于C++实现而言，显得更加简单。

#! /usr/bin/python


class Strategy(object):
    def do_action(self):
        pass


class ConcreateStrategyA(Strategy):
    def do_action(self):
        print "A do action"


class ConcreateStrategyB(Strategy):
    def do_action(self):
        print "B do action"



class Context(object):
    def __init__(self, strategy):
        self.strategy = strategy

    def take_action(self):
        self.strategy.do_action()



if __name__ == '__main__':

    s1 = ConcreateStrategyA()
    c = Context(s1)
    c.take_action()

    s2 = ConcreateStrategyB()
    c = Context(s2)
    c.take_action()

关于策略模式，更多信息请参考；
http://blog.youkuaiyun.com/lanyang123456/article/details/70476450