[issue17934] Add a frame method to clear expensive details

[Roundup Robot]

Roundup Robot added the comment:

New changeset 862ab99ab570 by Antoine Pitrou in branch 'default':
Issue #17934: Add a clear() method to frame objects, to help clean up expensive details (local variables) and break reference cycles.
http://hg.python.org/cpython/rev/862ab99ab570

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nosy: +python-dev

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue17934>
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