If we hit a segfault from within python, we just get
"Segmentation fault (core dumped)"
Things are a bit better with Python 3.7 and above.
You can use
python3 -X faulthandler
python3 -X dev
to see the *python* stack at SEGV time.
The '-X dev' devmode is better described in
That's the 3.9 docs, but it is mostly the same with 3.7 as far as I can tell.