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[Python-Dev] __exit__ API?

Guido van Rossum guido at python.org
Wed Mar 8 16:52:05 CET 2006 
I have a patch for this now -- python.org/sf/1445739.

Please review.

--Guido

On 3/3/06, Guido van Rossum <guido at python.org> wrote:
> A few days ago there were rumbling noises that requiring __exit__ to
> re-raise the exception (as I amended PEP 343 at the time) could lead
> to easily-missed bugs in __exit__ handlers.
>
> After thinking it over I think I agree and I think I'd like to change
> the API so that the exception is only ignored if __exit__ returns a
> "true" value.
>
> The easiest implementation is probably to just let the WITH_CLEANUP
> opcode do everything. This becomes a rather heavy opcode then but the
> alternative is to generate very hairy code (like the original patch
> did, full of ROT 4 choruses).
>
> Any objections? I probably won't get to this until Monday.
>
> --
> --Guido van Rossum (home page: http://www.python.org/~guido/)
>


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