I love python. I love vim, and I'm growing to love Eclipse. Until recently I thought I could only enjoy python and vim, or python and Ecilpse, but not Eclipse and vim. At least not freely. That has changed.
Vrapper is a GPLv3 licensed vim emulator for Eclipse. It doesn't work by replacing the editor like some others, it wraps the existing editor which means you get good keybindings but keep all the other good stuff about the base editor. It does it really really well!
It's too bad that I found this after I worked on fedpkg, would have been a much more enjoyable experience.