> From: Eric Snow > Sent: Saturday, June 11, 2016 11:02 PM > To: Émanuel Barry > Cc: Python-Dev > Subject: Re: [Python-Dev] PEP 520: Ordered Class Definition Namespace > (round 3) > > On Sat, Jun 11, 2016 at 7:51 PM, Émanuel Barry <vgr...@live.ca> wrote: > >> From: Eric Snow > >> 1. if ``__definition_order__`` is defined in the class body then it > >> must be a ``tuple`` of identifiers or ``None``; any other value > >> will result in ``TypeError`` > > > > Why not just any arbitrary iterable, which get converted to a tuple at > > runtime? > > An arbitrary iterable does not necessarily infer a definition order. > For example, dict is an iterable but the order is undefined. Also, > I'd rather favor simplicity for this (most likely) uncommon corner > case of manually setting __definition_order__, particularly at the > start. If it proves to be a problematic restriction in the future we > can loosen it.
Point. This can always be revised later (I'm probably overthinking this as always ;) > > -eric -Emanuel _______________________________________________ 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
