New submission from Terry J. Reedy <tjre...@udel.edu>: l=[1,3,2] l.sort(cmp=lambda x,y:y-x, key=lambda x: x) print(l)
With CPython 2.7 this 1) could raise an exception like TypeError: conflicting arguments passed; 2) could ignore cmp= and print [1,2,3] on the basis that the new should override the old; 3) does ignore key= and prints [3,2,1] (why does not matter now), but as near as I can tell, this is not documented. Suggestion: in 5.6.4. Mutable Sequence Types, in footnote 8, after "key specifies a function of one argument that is used to extract a comparison key from each list element: key=str.lower. The default value is None." add "Ignored if *cmp* is also given." ---------- assignee: docs@python components: Documentation keywords: easy, patch messages: 132507 nosy: docs@python, terry.reedy priority: normal severity: normal stage: needs patch status: open title: Doc list.sort(cmp=,key=) result. versions: Python 2.7 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue11712> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
