Open up python source easily inside of VIM
<leader>sft
opens up source in a new tab
<leader>sfs
opens up source in a new split
<leader>sfv
opens up source in a new vertical split
When your cursor is on a line such as.
from django.views.generic.list import ListView
press <leader>sft
will open up the list.py file in a new tab. It will
also work when the line is import argparse
it will show the source for it.