is python Object oriented??

Luis Zarrabeitia kyrie at
Sun Feb 1 20:46:41 EST 2009

On Sunday 01 February 2009 08:00:18 pm Steven D'Aprano wrote:
> On Sun, 01 Feb 2009 12:31:27 -0500, Steve Holden wrote:

> Except of course it isn't. Nobody sensibly complains that they can't 
> mangle the length of a list, or move keys around inside dicts, or 
> whatever. This data hiding is a good thing.

If lists and dictionaries were not C types, and python didn't have to shield 
us from the mess that is C and its pointers, that enforcement may not be such 
a good thing. And, while we are at it, that is not python having "selective" 
enforcement of data hiding but only for C, that's C/C++ having data hiding 
and not exporting the attributes back to python.

> All I want is the ability to do with Python classes what I can do with C
> extension types. I don't think that's an *unreasonable* ask, even if it
> is *unpractical* given the current design of Python.

Well, then. Do you want dynamic checks? Go fix Bastion/rexec (that would be a 
_good_ thing, valuable for way more than data hiding). Or do you want static 
checks? In that case, you have it already.

Luis Zarrabeitia (aka Kyrie)
Fac. de Matemática y Computación, UH.

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