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

Barry Warsaw barry at python.org
Fri Nov 21 16:53:15 CET 2014 
On Nov 21, 2014, at 10:55 PM, Nick Coghlan wrote:

>I suspect enough evidence of breakage is accumulating to tip the
>balance back to "not worth the hassle", but it would also be possible
>to just *add* the "from __future__ import generator_stop" feature, and
>postpone a decision on making that the only available behaviour.

I have no opinion on the actual PEP, but I'm not sure the above is a good
resolution.  future imports should be for things that have a clear path to
default behavior in some future release.  I don't think we should incur
technical debt to future-ize a feature that won't eventually get adopted.
Such a thing will just be another wart that will be difficult to remove for
backward compatibility.

Cheers,
-Barry
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