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Showing content from https://mail.python.org/pipermail/python-dev/2002-August/028334.html below:

[Python-Dev] type categories

[Python-Dev] type categoriesOren Tirosh oren-py-d@hishome.net
Mon, 26 Aug 2002 14:40:52 -0400
On Mon, Aug 26, 2002 at 11:29:55AM -0400, Barry A. Warsaw wrote:
> I'm leary of trying to weave some interface taxonomy into the standard
> library and types without having a lot of experience in using this for
> real world applications.  Even then, it's possible <wink> that there
> will be a lot of disagreement on the shape of the type hierarchy.
> 
> So one strategy would be to not classify the existing types and
> classes ahead of time, but to provide a way for an application to
> declare conformance to existing types in a way that makes sense for
> the application (or library).  The downside of this is that it may
> lead to a raft of incompatible interface declarations, but I also
> think that eventually we'd see convergence as we gain more experience.
> 
> My guess would be that of all the interfaces that get defined and used
> in the Python community, on a few that are commonly agreed on or
> become ubiquitous idioms will migrate into the core.  I don't think we
> need to solve this "problem" for the core types right away.  Let's
> start by providing mechanism and not policy.

+1 for a non-creationist approach to type categories.

	Oren



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