For Python, you can just use Pyrasite (https://github.com/lmacken/pyrasite) and inject a script which prints a stack trace for all threads.

I've done this to debug OpenStack in the past and it worked very well. There are many similar projects for Python, I used this one since it's in the RHEL repo.

Useful summary on StackOverflow: https://stackoverflow.com/questions/4163964/python-is-it-pos...