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

[Guido van Rossum]

Thanks, I added the survey and a summary to the PEP. If you hear about any
examples please do forward them here!

On Mon, Nov 17, 2014 at 3:56 PM, Steven D'Aprano <steve at pearwood.info>
wrote:

> On Mon, Nov 17, 2014 at 11:38:27AM -0800, Guido van Rossum wrote:
>
> > Hopefully the new version will soon be here:
> >
> >   https://www.python.org/dev/peps/pep-0479
> >
> > Note that I am definitely not yet deciding on this PEP. I would love it
> if
> > people sent in examples of code using generator expressions that would be
> > affected by this change (either by highlighting a bug in the code or by
> > breaking what currently works).
>
> Over a week ago I raised this issue on python-list mailing list. I
> expected a storm of bike-shedding, because that's the sort of place p-l
> is :-) but got just two people commenting.
>
> The thread, for anyone interested:
>
> https://mail.python.org/pipermail/python-list/2014-November/680757.html
>
> One response suggested that it is not generators which do the wrong
> thing, but comprehensions, and that comprehensions should be changed to
> behave like generators:
>
> https://mail.python.org/pipermail/python-list/2014-November/680758.html
>
> That should probably be put in the PEP, even if it is not an option
> being considered, it at least evidence that "some people" find the
> behaviour of generators more natural than that of comprehensions.
>
>
> --
> Steve
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-- 
--Guido van Rossum (python.org/~guido)
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