On Wed, 8 Nov 2017 01:56:42 +1100 Steven D'Aprano <st...@pearwood.info> wrote: > > I think that Nick's intent was not to say that after a single deletion, > the ordering guarantee goes away "forever", but that a deletion may be > permitted to reorder the keys, after which further additions will honour > insertion order. At least, that's how I interpret him.
The problem is this is taking things to a level of precision that makes the guarantee tedious to remember and reason about. The only thing that's friendly to (non-expert) users is either "dicts are always ordered [by insertion order], point bar" or "dicts are not ordered, point bar". Anything in-between, with reservations depending on which operations are invoked and when, is not really helpful to the average (non-expert) user. Which is why I think the user-friendliness argument does not apply if order ceases to be guaranteed after __del__ is called. Regards Antoine. _______________________________________________ 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
