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Tue Jun 7 19:03:57 EDT 2016 · https://mail.python.org/pipermail/python-dev/2016-June/144898.html

> On Jun 7, 2016, at 10:51 AM, Eric Snow <ericsnowcurrently at gmail.com> wrote:
> 
> This PEP changes the default class definition namespace to ``OrderedDict``.

I think this would be a nice improvement.

> Furthermore, the order in which the attributes are defined in each class
> body will now be preserved in ``type.__definition_order__``.  This allows
> introspection of the original definition order, e.g. by class decorators.

I'm unclear on why this would be needed.  Wouldn't the OrderedDict be sufficient for preserving definition order?

Raymond

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[Python-Dev] PEP: Ordered Class Definition Namespace