[issue29731] Ability to filter warnings to print current stack

[Cheryl Sabella]

Change by Cheryl Sabella <cheryl.sabella at gmail.com>:


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nosy: +christian.heimes, pitrou, vstinner
versions: +Python 3.8 -Python 3.7

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue29731>
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