python2 的新式类和老式类

class OldStyle:

     def __init__(self,message):

         print "这是",message

 class NewStyle(object):

     def __init__(self,message):

         print "这是",message

         

 if __name__ == '__main__':

     old=OldStyle("老示类")

     print old

     print type(old)

     print dir(old)

     new=NewStyle("新式类")

     print new

     print type(new)
    print dir(new)

输出
         这是 老示类

 <__main__.OldStyle instance at 0x00000000022A7A08>

 <type 'instance'>

 ['__doc__', '__init__', '__module__']

 这是 新式类

 <__main__.NewStyle object at 0x0000000001E899E8>

 <class '__main__.NewStyle'>

 ['__class__', '__delattr__', '__dict__', '__doc__', '__format__', '__getattribute__', '__hash__', '__init__', '__module__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__']