Python mode in Emacs: No such file or directory, pdb

Question

I have a python script that I want to debug with python-mode. I read in this thread that I can debug my python script with M-x pdb, however I get the following

Answer 1

In Emacs 23.3.1 and presumably higher, yet another variation is to use the Emacs shell, Eshell (M-x eshell). Under Eshell, there's a pre-existing, Lisp-based definition of pdb. These Lisp functions work in Eshell just like ordinary shell commands.

So pdb "./manage.py runserver" will start a Django server, for instance.