[Python-3000] PEP 31XX: A Type Hierarchy for Numbers (and other algebraic entities) (original) (raw)

Steven Bethard steven.bethard at gmail.com
Mon Apr 30 02:19:14 CEST 2007


On 4/29/07, Talin <talin at acm.org> wrote:

If it were technically possible, I would recommend that this PEP have to run the same gauntlet that any other large library addition would, which is to go through a long period of community feedback and criticism, during which a large number of people actually attempt to use the feature for real work.

This sounds like a pretty good reason to add isinstance() and issubclass(). Then the various ABCs can be distributed as third-party modules but can still make sure that things like isinstance(42, Real) and issubclass(int, Complex) are True (or whatever other assertions people want to make).

STeVe

I'm not in-sane. Indeed, I am so far out of sane that you appear a tiny blip on the distant coast of sanity. --- Bucky Katt, Get Fuzzy



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