On 24 March 2015 at 08:22, Greg Ewing <[email protected]> wrote: > Martin Teichmann wrote: >> >> maybe >> we could just change the compiler to leave the order in which things are >> defined >> in a class in the class namespace, say as a member __order__? Then we >> could >> use plain-old dicts for the class namespace, and we would not slow down >> class >> creation (not that it matters much), as determining the order would happen >> at >> compile time. > > > I don't think the compiler can determine the order in > all cases. Consider: > > class Spam: > > if moon_is_full: > alpha = 1 > beta = 2 > else: > beta = 2 > alpha = 1
This is also expected to work in class namespaces: locals()["alpha"] = 1 The language reference suggests it isn't, there's an open tracker issue I filed some time ago to suggest clarifying it but haven't found the time to actually sit down and come up with readable wording: http://bugs.python.org/issue17960 Cheers, Nick. -- Nick Coghlan | [email protected] | Brisbane, Australia _______________________________________________ Python-Dev mailing list [email protected] https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com