On Sat, May 25, 2013 at 6:18 AM, Antoine Pitrou <solipsis@pitrou.net> wrote:


In http://bugs.python.org/issue17936, I proposed making tp_subclasses
(the internal container implementing object.__subclasses__) a dict.
This would make the return order of __subclasses__ completely
undefined, while it is right now slightly predictable. I have never seen
__subclasses__ actually used in production code, so I'm wondering
whether someone might be affected by such a change.


Personally I never used it, but it's now explicitly documented as returning a list. Not sure what's the right thing to do here, but perhaps returning an OrderedDict can eliminate the order problem?