python如何查看对象的属性

$ python

Python 2.7.8 (default, Sep 24 2015, 18:26:19)

[GCC 4.9.2 20150212 (Red Hat 4.9.2-6)] on linux2

Type "help", "copyright", "credits" or "license" for more information.

>>> import cv2

>>> mser = cv2.MSER()

>>> dir(mser)

['__class__', '__delattr__', '__doc__', '__format__', '__getattribute__', '__hash__', '__init__',

 '__new__', '_

_reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', 'detect',

'empty', 'getAlgorithm', 'getBool', 'getDouble', 'getInt', 'getMat', 'getMatVector', 'getParams', 'getString',

 'paramHelp', 'paramType', 'setAlgorithm', 'setBool', 'setDouble', 'setInt', 'setMat', 'setMatVector',

 'setString']

>>> vars(mser)

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

TypeError: vars() argument must have __dict__ attribute

>>> mser.__dict__

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

AttributeError: 'cv2.MSER' object has no attribute '__dict__'

>>> help(mser)

Help on MSER object:

class MSER(FeatureDetector)

 |  Method resolution order:

 |      MSER

 |      FeatureDetector

 |      Algorithm

 |      __builtin__.object

 | 

 |  Methods defined here:

 | 

 |  __repr__(...)

 |      x.__repr__() <==> repr(x)

 | 

 |  detect(...)

 |      detect(image[, mask]) -> msers

 | 

 |  ----------------------------------------------------------------------

 |  Data and other attributes defined here:

 | 

 |  __new__ = <built-in method __new__ of type object>

 |      T.__new__(S, ...) -> a new object with type S, a subtype of T