Actor picking

pickActor.py

# Actor dictionary
actors = {}

# create a custom actor class
class Pickable(Actor):
  node = None
	def __init__(self):
    # create something
    node = SphereNode.create(1,2)
    node.setSelectable(True)
    # NOTE: each node has a unique name by default. if you want you
    # can re-name the node before this line doung node.setName('blahblah')
		actors[node.getName()] = self
  
  def picked():
    print("Can't touch this!")

#[...]

def onObjectSelected(node, distance):
  if(node != None and node.getName() in actors):
    actors[node.getName()].picked()
        
def onEvent():
  e = getEvent()
	# When the confirm button is pressed:
	if(e.isButtonDown(Event.Button5)):
		r = getRayFromEvent(e)
		if(r[0]): querySceneRay(r[1], r[2], onObjectSelected)

setEventFunction(onEvent)

Question:

what is a good way to refer back to an Actor given a picked object?
Lets say I write an Actor that encapsulates a finite state machine and it controls a scenenode- like moves it around the scene. Now lets say I pick that scenenode and decide I want to move it somewhere. It would be nice if I can alert the Actor that it's being picked and act accordingly.

I would keep the actors in a python dictionary, giving each actor the same name as the sceneNode they control (see code)