Python - Dropping Into pdb From Nose
Updated 2026-09-23: nose doesn’t run on Python 3.10+, so use pytest --pdb instead.
This document describes how to drop into pdb when your Python nose tests fail: http://nose.readthedocs.org/en/latest/plugins/debug.html
It just requires running nosetests --pdb.
Very helpful if you’re debugging why a test failed.