Vim-Midi-Chlorian is a vim plugin for Python autocompletion using jedi
The main reason I wrote it instead of using the excellent existing vim-jedi one is that I was unable to get extra paths included in the autocompletion without using a virtualenv which unfortunately is not available for me on all the machines I work on.
The other reason is that I have just started learning vim and I thought writing a simple plugin is a great way to learn more about vim. And also, it's great fun!
Therefore, if you stumbled here, I strongly advise using the above mentioned plugin, as this one is really designed to fit my needs specifically.