Terry Reedy wrote:
To make None a true bottom object, the rich comparison methods would have to special-case None as either argument before looking at the __rc__ special methods of either.
I don't think it would be necessary to go that far. It would be sufficient to put the special case *after* giving both operations a chance to handle the operation via the type slots. Well-behaved objects generally wouldn't go out of their way to defeat that, but they could do so if necessary, e.g. to create a Bottom() that compares less than None. Although once None becomes usable as a bottom in most cases, there shouldn't be much need for people to introduce their own bottoms. -- Greg _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
