Useful or not, from you.
PTVS Python 3.8 and Python/C++ mixed-mode debugging

I can use python 3.8 with visual studio 2019 (Version 16.7.4) but I run into problems when trying to use Python/C++ mixed-mode debugging. It is surprising that Microsoft is taking so long to include Python 3.8, there were plenty of issues reported over a year ago for Python 3.8.

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Without any help

If this is debugging unit tests, wouldn't it be using the regular debugger, not mixed-mode?