Multi-processing techniques in Python | And Now For Something Completely Different, Oct. 2007

#!/usr/bin/env python
# Pass an object through a queue to another process.

from processing import Process, Queue, currentProcess

class Example:
    def __init__(self, name):
        self.name = name
    def __str__(self):
        return '%s (%s)' % (self.name, currentProcess())


def f(q):
    print 'In child:', q.get()


if __name__ == '__main__':
    q = Queue()
    p = Process(target=f, args=[q])
    p.start()
    o = Example('tester')
    print 'In parent:', o
    q.put(o)
    p.join()