[Python-Dev] PEP 479: Change StopIteration handling inside generators (original) (raw)

Guido van Rossum guido at python.org
Wed Nov 26 18:19:57 CET 2014

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.

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