[issue24696] Don't use None as sentinel for traceback

[Benjamin Peterson]

Benjamin Peterson <benjamin at python.org> added the comment:

3.4 is out of bugfix support.

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nosy: +benjamin.peterson
resolution:  -> out of date
stage:  -> resolved
status: open -> closed

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue24696>
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