[docs] [issue26502] traceback.extract_tb breaks compatibility by returning FrameSummary

[Berker Peksag]

Berker Peksag <berker.peksag at gmail.com> added the comment:

Thanks for merging this, Petr. What do you think about backporting to 3.7?

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components:  -Documentation
versions: +Python 3.8

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