Getting not derived members of a class

[Brian Beck]

George Sakkis wrote:
>>>>z = Z()
>>>>z.__class__.__mro__
> 
> (<class '__main__.Z'>, <class '__main__.Y1'>, <class '__main__.Y2'>,
> <class '__main__.X'>, <type 'object'>)
> 
> Old style classes don't have __mro__, so you have to write it yourself;
> in any case, writing old style classes in new code is discouraged.

Notice also that George's __mro__ solution returns the bases in reverse 
order than what you requested (in your example, you said B should come 
last). So use list(reversed(z.__class__.__mro__)) or 
z.__class__.__mro__[::-1]

-- 
Brian Beck
Adventurer of the First Order