[issue34805] Explicitly specify `MyClass.__subclasses__()` returns classes in definition order

[Raymond Hettinger]

Change by Raymond Hettinger <raymond.hettinger at gmail.com>:


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resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue34805>
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