New submission from Aaron Hall: We have __slots__ with other ABC's, see http://bugs.python.org/issue11333 and http://bugs.python.org/issue21421.
There are no downsides to having empty slots on a non-instantiable class, but it does give the option of denying __dict__ creation for subclassers. The possibility of breaking is for someone using __slots__ but relying on __dict__ creation in a subclass - they will have to explicitly add "__dict__" to __slots__. Since we have added __slots__ to other ABC's, I will provide a PR soon on this. Diff should look like this (in Lib/abc.py): class ABC(metaclass=ABCMeta): """Helper class that provides a standard way to create an ABC using inheritance. """ - pass + __slots__ = () (I also want to add a test for this, and ensure other ABC's also have this if they don't.) ---------- messages: 294389 nosy: Aaron Hall priority: normal severity: normal status: open title: Add __slots__ to ABC convenience class _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue30463> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com