Like said before, pida is a great IDE that supports vim as its external editor and also the default editor called Culebra, I've used pida myself and it has some nice features. It's still rough around the edges and has bugs, but its useable.
It's written with the Kiwi framework, wich is a wrapper for PyGTK. It has a codeoutliner pane (using ctags I think, but it looks very clean), file explorer pane, project files, todo list, and even a built in doc viewer (didnt work very wll with some docs). It also has a todolist pane and a pane that displays errors caught by PyLint (very useful). It has a built-in terminal and python interpreter. Supports CVS and SVN for your projects! For the most part I just use Vim alone, but pida definetely seems to have a lot of potential. Be sure to get the latest version; I would use pida if it wasnt for some minor bugs. http://pida.berlios.de/ -- http://mail.python.org/mailman/listinfo/python-list
