New submission from Lie Ryan <lie.1...@gmail.com>: An itertool to Group-by-n
>>> lst = range(15) >>> itertools.grouper(lst, 5) [[0, 1, 2, 3, 4], [5, 6, 7, 8, 9], [10, 11, 12, 13, 14]] This function is often asked in several c.l.py discussions, such as these: http://comments.gmane.org/gmane.comp.python.general/623377 http://comments.gmane.org/gmane.comp.python.general/622763 There are several issues. What should be done if the number of items in the original list is not exactly divisible? - raise an error as default - pad with a value from 3rd argument - make the last one shorter, maybe using keyword arguments or sentinel to 3rd argument or should there be separate functions for each of them? What about infinite list? Most recipes for the function uses zip which breaks with infinite list. ---------- components: Library (Lib) messages: 87743 nosy: lieryan severity: normal status: open title: itertools.grouper type: feature request _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue6021> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
