don't need try on volumes: *must* be iterable!
don't need try on volumes: *must* be iterable!

openpathsampling/openpathsampling,openpathsampling/openpathsampling,openpathsampling/openpathsampling,dwhswenson/openpathsampling,openpathsampling/openpathsampling,jhprinz/openpathsampling,choderalab/openpathsampling,choderalab/openpathsampling,jhprinz/openpathsampling,dwhswenson/openpathsampling,dwhswenson/openpathsampling,dwhswenson/openpathsampling,choderalab/openpathsampling,jhprinz/openpathsampling