Python_建造者模式

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#!/usr/bin/python # -*- coding:utf-8 -*-   #建造者基类 class PersonBuilder():     def BuildHead(self):         pass       def BuildBody(self):         pass       def BuildArm(self):         pass       def BuildLeg(self):         pass   #胖子 class PersonFatBuilder(PersonBuilder):     type = u'胖子'     def BuildHead(self):         print u'构建%s的头' % self.type       def BuildBody(self):         print u'构建%s的身体' % self.type       def BuildArm(self):         print u'构建%s的手' % self.type       def BuildLeg(self):         print u'构建%s的脚' % self.type     #瘦子 class PersonThinBuilder(PersonBuilder):     type = u'瘦子'     def BuildHead(self):         print u'构建%s的头' % self.type       def BuildBody(self):         print u'构建%s的身体' % self.type       def BuildArm(self):         print u'构建%s的手' % self.type       def BuildLeg(self):         print u'构建%s的脚' % self.type   #指挥者 class PersonDirector():     pb = None;     def __init__(self, pb):         self.pb = pb       def CreatePereson(self):         self.pb.BuildHead()         self.pb.BuildBody()         self.pb.BuildArm()         self.pb.BuildLeg()   def clientUI():     pb = PersonThinBuilder()     pd = PersonDirector(pb)     pd.CreatePereson()       pb = PersonFatBuilder()     pd = PersonDirector(pb)     pd.CreatePereson()     return   if __name__ == '__main__':     clientUI();