Accessing thread variables

[Lukas Kubin]

What's the best way to access a thread's variable?
Let's say I have thread:

class MyThread(threading.Thread):
   def __init__(self):
     threading.Thread.__init__(self)
     self.varToReturn = ""
     self.start()

   def run(self):
     self.varToReturn = myAction()

   def myAction():
     string = "hello"
     return string

And I call the thread:

i = MyThread()
print i.varToReturn

This returns nothing (the empty string) instead of "hello".
What am I doing bad?

Thank you.

lukas