[Python-Dev] PEP: Ordered Class Definition Namespace (original) (raw)

Raymond Hettinger raymond.hettinger at gmail.com
Tue Jun 7 19:03:57 EDT 2016

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._definitionorder_. 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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