I've started using realgud:pdb for python debugging in emacs: https://github.com/realgud/realgud
When you begin a realgud session, it opens a command window and a source window.
Keys like 'n' and 'b' typed inside the source window execute pdb commands, like 'next' or 'breakpoint.'
I would like to make modifications to the source code while I debug, but this is impossible if my keystrokes in the source window are captured by the debugging application.
Am I missing something? What's the right, effective workflow for making changes to source using realgud based on information I learn in the debugging process?