[Python-Dev] Negative times behaviour in itertools.repeat for Python maintenance releases (2.7, 3.3 and maybe 3.4) (original) (raw)

Alexander Belopolsky alexander.belopolsky at gmail.com
Mon Jan 27 05:40:33 CET 2014


On Sun, Jan 26, 2014 at 11:26 PM, Vajrasky Kok <sky.kok at speaklikeaking.com>wrote:

In case we are taking "not backporting anything at all" road, what is the best fix for the document?

Old >>> itertools.repeat.doc 'repeat(object [,times]) -> create an iterator which returns the object\nfor the specified number of times. If not specified, returns the object\nendlessly.'

I would say no fix is needed for this doc because the signature suggests (correctly) that passing times by keyword is not supported.

The following behavior further supports this interpretation.

from itertools import * ''.join(repeat('a', times=-4)) Traceback (most recent call last): File "", line 1, in OverflowError: long int too large to convert to int

The ReST documentation may benefit from an addition of a warning that behavior of repeat() is "undefined" when times is passed by keyword. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.python.org/pipermail/python-dev/attachments/20140126/66e8ea71/attachment.html>



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