[Python-Dev] Simpler reformulation of C inheritance Q.

Guido van Rossum guido@python.org
Tue, 06 Aug 2002 11:19:18 -0400

[David A]
> > It's not too terrible, but I'd like it a lot better if types would
> > just use tp_basicsize to find the beginning of the variable stuff
> > so we could embed the memory in the type itself. 'Course, I've
> > forgotten more than I knew about that code, so I might be barking
> > up the wrong banyan.

[Chris T]
> That's exactly what I want to do, but I have to find
> out how the variable part of types is used at the moment,
> and I admit I didn't understand it, yet.
> The place where user stuff should go is where instances
> have their slots. With meta-types, it now happens that
> types become instances, but types refuse to have slots.
> This needs to be changed, everything else is a workaround.

You're right.  And David has the right idea.  The problem is that for
convenience I defined the variable part of a type object as a private
structure (etype).  It's a lot of work to change that -- not very deep
perhaps, but a lot of refactoring code that does deep things.

To remind myself of this task, I've added a new SF bug:

--Guido van Rossum (home page: http://www.python.org/~guido/)