I found a few blogs posts that explained how to use pdb.  It appears from the comments that such introductory material is very useful to a lot of users.  Instead of just expanding the pdb module docs, I propose to add a debugging howto covering basic troubleshooting techniques and giving a pdb tutorial.  I think a howto has more visibility, as people unaware of the existence of a thing named pdb may however look for “debugging”.

To educate myself on pdb, I have started writing a document.  Before investing too much time, I’d like to know if people agree with the principle of adding such a howto.