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Sat Mar 28 01:53:56 CET 2009 · https://mail.python.org/pipermail/python-dev/2009-March/087859.html

Guido van Rossum wrote:

> Perhaps the crux is that *if* you accidentally use "return <value>" in
> a vanilla generator expecting the value to show up somewhere, you are
> probably enough of a newbie that debugging this will be quite hard.
> I'd like not to have such a newbie trap lying around.

Okay, so would you be happy if the for-loop were to
raise an exception if it gets a StopIteration whose
value is not None?

-- 
Greg

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[Python-Dev] PEP 380 (yield from a subgenerator) comments