For anyone else who may stumble upon this thread, here's how I did it:
output = "//server/my_special_location/$FILM`_`$SHOT`_`$VERSION`_`$OS.$AOV.$F6.exr" for outNode in hou.node("/out").allSubChildren(): ROPNode = outNode.type().name() if "Redshift_ROP" in str(ROPNode): ROPNodeName = "/out/" + str(outNode) hou.node(ROPNodeName).parm("RS_outputEnable").set(True) hou.node(ROPNodeName).parm("RS_outputFileNamePrefix").set(output)