With arcpy, how do I detect relationship classes in a file GDB (or can't I)?

Question

I would like to be able to detect relationship classes in a file GDB. Because users of my script might have only an ArcView level license, they would not be able to manipulate the schema of a feature class (specifically to add a field) that is in a workspace that has relationship classes. How do I detect the presence of relationship classes, so that I can document them, avoid them programatically, and allow the script to continue?

Answer 1

The relationshipClassNames property is supposed to do this but it does not seem to work for me (tested in a file geodatabase, created relationship class between two feature classes, checked the property, the list returned is empty for both). Maybe it will work for you.