Guido rethinking removal of cmp from sort method

harrismh777 harrismh777 at charter.net
Sat Apr 2 07:17:56 CEST 2011


Chris Angelico wrote:
> Why this lengthy discussion on whether Python is object-oriented or
> not? What difference does it make?

      Great question... glad you asked...!

> But bad things sometimes have to happen. And that's why things are
> versioned.

      You didn't read the post... cmp removal is a bad thing, and it 
does not need to,  and should not have to  happen.

Object oriented
> programming/design/analysis/architecture/whatever has no effect on
> that;

     Wrong... one of the reasons for OOP in the first place ( OOA&D ) is 
to ensure that BAD THINGS DO NOT HAPPEN.  Code reuse and stability are 
key... and OOA&D helps to make sure that works.

if you link against a library, or call on an object, you need to
> be able to depend on it. The interface of "sort([1,2,3,4])" is no
> different from "[1,2,3,4].sort()" just because one is objects and the
> other is functions.

     You need to read Grady Booch... and study a little OOP design 
either using SmallTalk, or C++, to get an appreciation maybe for what is 
at stake here. Yes, Python OOP is optional for the client perspective. 
But if chosen, OOP must WORK as expected by the OOP community if the 
language is touted as being able to support OOP, which also implies 
support for the spirit of OOA&D.

      You may not have enough knowledge to understand what I'm talking 
about.  Forgive me.


kind regards,
m harris





More information about the Python-list mailing list