Typo in error message, and PEP fix
Typo in error message, and PEP fix

openworm/worm-tracker,openworm/tracker-commons,openworm/tracker-commons,Ichoran/tracker-commons,Ichoran/tracker-commons,Ichoran/tracker-commons,Ichoran/tracker-commons,Ichoran/tracker-commons,openworm/tracker-commons,openworm/tracker-commons,Ichoran/tracker-commons,openworm/tracker-commons,openworm/tracker-commons,openworm/worm-tracker