[Python-Dev] PEP 479: Change StopIteration handling inside generators

[Guido van Rossum]

On Wed, Nov 26, 2014 at 8:54 AM, Paul Moore <p.f.moore at gmail.com> wrote:

> On 26 November 2014 at 16:24, Isaac Schwabacher <ischwabacher at wisc.edu>
> wrote:
> > This actually leads to a good example of why the PEP is necessary:
> [...]
>
> Oh! If that's the current behaviour, then it probably needs to go into
> the PEP as a motivating example. It's far more convincing than most of
> the other arguments I've seen. Just one proviso - is it fixable in
> contextlib *without* a language change? If so, then it loses a lot of
> its value.
>

It's hard to use as an example because the behavior of contextlib is an
integral part of it -- currently for me the example boils down to "there is
a bug in contextlib". Maybe it would have been caught earlier with the
change in the PEP, but when using it as a motivating example you have to
show the code containing the bug, not just a demonstration.

If you want to try though, I'm happy to entertain a pull request for the
PEP.

-- 
--Guido van Rossum (python.org/~guido)
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