.vimrc

function! PythonPath()
python << EOF
import os.path
import sys
curdir = os.path.abspath(os.path.curdir)
while curdir != '/':
    if os.path.exists(os.path.join(curdir, 'apps')):
        sys.path.insert(0, os.path.join(curdir, 'apps'))
    curdir = os.path.abspath(curdir + '/..')
EOF
endfunction
call PythonPath()