Antti Haapala added the comment: This does apply to all versions of Python from 2.6 up. Registering does work of course.
I believe the reason for not having the __subclasshook__ is the following sentence in PEP 3119: "ABCs are intended to solve problems that don't have a good solution at all in Python 2, such as distinguishing between mappings and sequences." This used to be worse in <3.3 because there if you ever inherit from `Sequence` you will always end up having `__dict__`, even if you just want `__slots__`. (By the way, if Py2 documentation is fixed, it should also say that these ABCs are new as of 2.6, not since 2.4 like the rest of the collections module). ---------- nosy: +ztane _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue23864> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
