Multiprocessing docs contain examples, that are not valid py3k code,
mostly because of print used as a statement. Example (taken from
multiprocessing.rst):

from multiprocessing import Process

def f(name):
    print 'hello', name

if __name__ == '__main__':
    p = Process(target=f, args=('bob',))
    p.start()
    p.join()

If no one is working on this already, than I'll start fixing this and
will present a patch in 2 or 3 days.