Barry A. Warsaw added the comment: On Mar 17, 2013, at 03:10 PM, R. David Murray wrote:
>There was a long thread about this on python-dev that might be worth going >back over, where I had the same misconception (that functions should always >return the same type as their arguments). While I think that should be the >default design, it isn't always the best API. (The real rule, if I recall >correctly, is that functions should never accept *mixed* argument types for >input data.) Totally agree about the mixed type rule. But this is something different, and I know it's been discussed, and is a difficult problem. It's causing real-world pain for people though, so it's worth thinking about again. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue17445> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
