>>> class MyData():

    def __init__(self,name,phone):

        self.name=name

        self.phone=phone

    def updatephone(self,newphone):

        self.phone=newphone

        print 'new phone is:',self.phone

>>> data=MyData()

Traceback (most recent call last):

  File "<pyshell#2>", line 1, in <module>

    data=MyData()

TypeError: __init__() takes exactly 3 arguments (1 given)

>>> data=MyData('xiaodeng',10086)

>>> dir(data)

['__doc__', '__init__', '__module__', 'name', 'phone', 'updatephone']

#获取属性值

>>> getattr(data,'name')

'xiaodeng'

>>> getattr(data,'phone')

10086

#设置属性值

>>> setattr(data,'name','xiaoDong')

>>> dir(data)

['__doc__', '__init__', '__module__', 'name', 'phone', 'updatephone']

>>> data.__dict__

{'phone': 10086, 'name': 'xiaoDong'}

>>>