Guido van Rossum added the comment: It would be a deviation from existing practice for a collection ABC to exist in typing but not in collections.abc, and it would mean the inheritance tree for the types in typing.py would be different from that in collections.abc.
These ABCs, while not so useful by themselves, are building blocks for the more useful ABCs. They also give people the right terminology. That arguably is the biggest problem here -- it's clear that people desperately want to be able to talk about the common API for sets and sequences, which happens to be __len__, __iter__ and __contains__. But it's also clear that people often believe that that common API is called Iterable, which it isn't. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue27598> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
