类的专有方法(__getattr__和__setattr__、__delattr__)

# -*- coding: utf-8 -*-
#python 27
#xiaodeng
#http://www.360doc.com/content/15/0413/19/12067640_462966543.shtml



#类的专有方法(__getattr__和__setattr__、__delattr__)
#__setattr__:通过该方法，给对象添加或修改指定的属性

class Test():
    def __init__(self,name,age):
        self.name=name
        self.age=age


test=Test(‘xiaodeng‘,28)
print test.name


    
#setattr
#参数：(对象，属性，属性的值)，如：setattr(object,name,value)
setattr(test,‘python‘,2)
print test.__dict__#{‘python‘: 2, ‘age‘: 28, ‘name‘: ‘xiaodeng‘}


#getattr
#getattr(object,name,default)
print ‘**‘*13
print getattr(test,‘python‘)#2

delattr(test,‘python‘)
print test.__dict__#{‘age‘: 28, ‘name‘: ‘xiaodeng‘}