Composition instead of inheritance

Ethan Furman ethan at stoneleaf.us
Sat Apr 30 00:22:53 CEST 2011


Ian Kelly wrote:
> On Thu, Apr 28, 2011 at 11:15 AM, Ethan Furman <ethan at stoneleaf.us> wrote:
>> For anybody interested in composition instead of multiple inheritance, I
>> have posted this recipe on ActiveState (for python 2.6/7, not 3.x):
>>
>> http://code.activestate.com/recipes/577658-composition-of-classes-instead-of-multiple-inherit/
>>
>> Comments welcome!
> 
> On line 14, is it intentional that attributes whose values happen to
> be false are not considered as conflicts?

Nope, not intentional at all!  I'll fix that...


> On line 31, this code:
> 
> thing = getattr(thing, '__func__', None) or thing
> 
> could be simplified to this:
> 
> thing = getattr(thing, '__func__', thing)

I'll fix that, too.


Thanks!



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