[Python-Dev] Missing piece of PEP 237 (int unification)

[Guido van Rossum]

> The PEP says OverflowWarning was for "transition phase A":
> 
>      Here are the rules that guide warnings generated in situations
>      that currently raise OverflowError.  This applies to transition
>      phase A.
> 
> Phase A was done in 2.2.  Phase B0 was done in 2.3, and 2.4 is
> supposed to be phase B1.  The OverflowWarnings are still there, but
> should have gone away in 2.3 already.
> 
> It would be a lot of fun to rip out the bletcherous code raising
> OverflowWarning, and finding the infinite loop that will then occur in
> the test suite (you think I'm kidding -- heh).

Sounds like a good idea.  I totally forgot about this part, because
it's so nearyly invisible. :-)

> One question the PEP doesn't answer:  does PyExc_OverflowWarning
> vanish from the C API at the same time?  Does OverflowWarning vanish
> from Python too?  Or do we need to add a PendingDeprecationWarning for
> OverflowWarning in 2.4, a DeprecationWarning for OverflowWarning in
> 2.5, and finally nuke the silly bastard tin 2.6?

I would keep the APIs for one release and then nuke them, but not add
any deprecation code.  Just document them as on the way out.

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