I was able to get the relationshipClassNames property to work (thanks Xander!), but did not realize the relationshipClass property did not have a primary and foreign key field. arcpy.Describe(arcpy.MakeTableView_management(table, table + "_view")).relationshipClassNames:
I tried using some code from this thread, but get an empty value []. fields = arcpy.Describe(relationshipName).fields
print fields
Any ideas on how to get the primary/foreign keys from a relationship class?