non-null results set from queries
non-null results set from queries


Former-commit-id: 296084a7f39c3431fc76486571b832976e643ff5
travs/PyOpenWorm,kaustubhcs/PyOpenWorm,openworm/PyOpenWorm,gsarma/PyOpenWorm,hnunner/PyOpenWorm,gsarma/PyOpenWorm,openworm/PyOpenWorm