Replaces a subprocess call with a native Python call.
Replaces a subprocess call with a native Python call.

The subprocess command used to work but doesn't any more due to our use of a virtualenv. The new code is cleaner and better in any case.

Andr3iC/courtlistener,voutilad/courtlistener,voutilad/courtlistener,Andr3iC/courtlistener,voutilad/courtlistener,Andr3iC/courtlistener,voutilad/courtlistener,voutilad/courtlistener,Andr3iC/courtlistener,Andr3iC/courtlistener