paul rubin <phr-pythonb...@nightsong.com> added the comment:

Bah, the above doesn't work in the cases where the iterator is empty or 
(different symptom) where the tail part is empty.  Rather than posting a 
corrected version (unless someone wants it) I'll just say not to use that code 
fragment, but that the intended API still looks reasonable.  I do support 
having some kind of solution but don't want to keep stretching out an already 
closed discussion unless people think there is more to say.

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue44571>
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