Add back python package verification with path fix.
Add back python package verification with path fix.

Dallinger/Dallinger,jcpeterson/Dallinger,Dallinger/Dallinger,jcpeterson/Dallinger,jcpeterson/Dallinger,Dallinger/Dallinger,Dallinger/Dallinger,jcpeterson/Dallinger,Dallinger/Dallinger,jcpeterson/Dallinger