大话设计模式（Python版）--装饰器模式

来源：互联网发布：linux可执行文件结构编辑：程序博客网时间：2024/06/16 10:58

第一版

#!/usr/bin/env pythonclass Person:    def __init__(self, name):        self.__name = name    def WearTShits(self):        print("Big T-Shits")    def WearBigTrouser(self):        print("Big Trouser")    def WearSneakers(self):        print("Seankers")    def WearSuit(self):        print("Suit")    def WearTie(self):        print("Tie")    def WearLeatherShoes(self):        print("Shoes")    def Show(self):        print("装扮的",self.__name)if __name__ == '__main__':    xc = Person('小菜')    print('第一种装扮: ')    xc.WearTShits()    xc.WearBigTrouser()    xc.WearSneakers()    xc.Show()    print('第二种装扮: ')    xc.WearSuit()    xc.WearTie()    xc.WearLeatherShoes()    xc.Show()

第二版

#!/usr/bin/env python#import abcfrom abc import ABCMeta,abstractmethodclass Person:    def __init__(self,name):        self.__name = name    def Show(self):        print("装扮的",self.__name)class Finery:    __metaclass__ = ABCMeta    @abstractmethod    def Show(self):        passclass TShits(Finery):    def Show(self):        print("大T恤")class BigTrouser(Finery):    def Show(self):        print("垮裤")class Sneakers(Finery):    def Show(self):        print("破球鞋")class Suit(Finery):    def Show(self):        print("西装")class Tie(Finery):    def Show(self):        print("领带")class LeatherShoes(Finery):    def Show(self):        print("皮鞋")if __name__ == '__main__':    xc = Person('小菜')    print('第一种装扮:')    dtx = TShits()    kk = BigTrouser()    pqx = Sneakers()    dtx.Show()    kk.Show()    pqx.Show()    xc.Show()    print('第二种装扮:')    xz = Suit()    ld = Tie()    px = LeatherShoes()    xz.Show()    ld.Show()    px.Show()    xc.Show()

第三版

#!/usr/bin/env pythonimport abcclass Component:    __metaclass__=abc.ABCMeta    @abc.abstractmethod    def Operation(self):        passclass ConcreteComponent(Component):    def Operation(self):        print("具体对象的操作")class Decorator(Component):    def __init__(self):        self._component = Component()    def SetComponent(self,component):        self._component = component    def Operation(self):        if(self._component != None):            self._component.Operation()            class ConcreteDecoratorA(Decorator):    def __init__(self):        self.__addedState = None    def Operation(self):        super(ConcreteDecoratorA,self).Operation()        self.__addedState = "New State"        print("具体装饰对象A的操作")class ConcreteDecoratorB(Decorator):    def Operation(self):        super(ConcreteDecoratorB,self).Operation()        self.AddedBehavior()        print("具体装饰对象A的操作")    def AddedBehavior(self):        passif __name__ == '__main__':    c = ConcreteComponent()    d1 = ConcreteDecoratorA()    d2 = ConcreteDecoratorB()    d1.SetComponent(c)    d2.SetComponent(d1)    d2.Operation()

第四版：

#!/usr/bin/env pythonimport abcclass Person:    def __init__(self):        pass    def __init__(self,name):        self.__name = name    @abc.abstractmethod    def Show(self):        print("装扮的",self.__name)class Finery(Person):    def __init__(self):        self._component = super(Finery,self).__init__(self)    def Decorate(self,component):        self._component = component    def Show(self):        if(self._component != None):            self._component.Show()class TShits(Finery):    def Show(self):        print("大T恤")        super(TShits,self).Show()class BigTrouser(Finery):    def Show(self):        print("垮裤")        super(BigTrouser,self).Show()class Sneakers(Finery):    def Show(self):        print("破球鞋")        super(Sneakers,self).Show()        class Suit(Finery):    def Show(self):        print("西装")        super(Suit,self).Show()class Tie(Finery):    def Show(self):        print("领带")        super(Tie,self).Show()        class LeatherShoes(Finery):    def Show(self):        print("皮鞋")        super(LeatherShoes,self).Show()if __name__ == '__main__':    xc = Person("小菜")    print("第一种装扮:")    pqx = Sneakers()    kk = BigTrouser()    dtx = TShits()    pqx.Decorate(xc)    kk.Decorate(pqx)    dtx.Decorate(kk)    dtx.Show()    print("第二种装扮:")    dtx.Decorate(xc)    kk.Decorate(dtx)    pqx.Decorate(kk)    pqx.Show()

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