python如何看变量属性

$ 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__'