Below @Cotton.Rockwood answer (in the comments) :Answer based on @Cotton.Rockwood comment :
According to this document by Peter Miller, the MGET (Marine Geospatial Ecology Tools) version of Cayula and Cornillon front detection can also be run from Python. It is not clear just from his comment whether arcpy is necessary, but it might be worth checking on. It also states 'If you are a Python expert and plan to use MGET without ArcGIS, you can ignore the steps relating to ArcGIS. For help with installation, please contact us.' on the MGET installation page.