# -*- coding: utf-8 -*-#python 27#xiaodeng#python之函数用法__setattr__#http://www.cnblogs.com/hongfei/p/3858256.html #用__setattr__函数重构方法class Fruit():    def __init__(self,color,price):        self.__color = color        self.__price = price            def __setattr__(self,name,value):#重构方法__setattr__方法,没有该方法会默认存在该方法        self.__dict__[name] = str('xiaodeng,')+str(value)  #为了看出区别，特意在__setattr__方法中加了str('xiaodeng')if __name__ == "__main__":    fruit = Fruit("blue", 10)    print fruit                                 #__main__.Fruit instance    print fruit.__dict__                        #{'_Fruit__price': 'xiaodeng,10', '_Fruit__color': 'xiaodeng,blue'}    print fruit.__dict__.get("_Fruit__price")   #xiaodeng,10    #给_Fruit__price设置新的属性    fruit.__dict__["_Fruit__color"] = 'red'         print fruit.__dict__.get("_Fruit__color")   #red    #增加新的属性和属性值    fruit.__dict__['name']='xiaodeng'    print fruit.__dict__                        #{'_Fruit__price': 'xiaodeng,10', 'name': 'xiaodeng', '_Fruit__color': 'red'}