How to pass and run a callback method in Python

Question

I have a Manager (main thread), that creates other Threads to handle various operations. I would like my Manager to be notified when a Thread it created ends (when run() met

Answer 1

Anything wrong with doing it this way?

from threading import Thread

class Manager():
    def Test(self):
        MyThread(self.on_thread_finished).start()

    def on_thread_finished(self, data):
        print "on_thread_finished:", data

class MyThread(Thread):
    def __init__(self, callback):
        Thread.__init__(self)
        self.callback = callback

    def run(self):
        data = "hello"
        self.callback(data)

m = Manager()
m.Test() # prints "on_thread_finished: hello"