Armin Rigo added the comment: This may have been the most recent discussion of this idea (as far as I can tell): http://mail.python.org/pipermail//python-ideas/2012-August/016036.html
Basically, it seems to be still unresolved in the trunk Python; sorry, I thought by now it would have been resolved e.g. by the addition of a method on types or a function in the operator module. In the absence of either, you need either to simulate its behavior by doing this: for t in type(a).__mro__: if '__index__' in t.__dict__: return t.__dict__['__index__'](a) Or you can piggyback on an unrelated call that simply causes the C-level PyNumber_Index() to be called: return range(a).stop ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue18712> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com