On Tue, Jul 31, 2018 at 02:58:56AM +1000, Steven D'Aprano wrote: > The *only* thing you have seen which is a language feature is this rule: > > - if two objects, a and b, have the same ID *at the same time*, then > "a is b" will be true; > > - if "a is b" is false, then a and b must have different IDs.
Sorry, I forgot to mention that for both of those, the reverse applies as well. Perhaps a better way to put it is this: - if "a is b", then a and b must have the same ID, and vice versa. - if "a is not b", then a and b must have different IDs, and vice versa. -- Steve _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor