portable multiprocessing code

[Ian Kelly]

On Tue, May 17, 2011 at 9:14 AM, Eric Frederich
<eric.frederich at gmail.com> wrote:
> I have written some code using Python 2.7 but I'd like these scripts
> to be able to run on Red Hat 5's 2.4.3 version of Python which doesn't
> have multiprocessing.
> I can try to import multiprocessing and set a flag as to whether it is
> available.  Then I can create a Queue.Queue instead of a
> multiprocessing.Queue for the arg_queue and result_queue.
> Without actually trying this yet it seems like things would work okay
> except for the Worker class.  It seems I can conditionally replace
> multiprocessing.Queue with Queue.Queue, but is there anything to
> replace multiprocessing.Process with?

Yes, threading.Thread.

Pro: Since the multiprocessing module is designed to be a drop-in
replacement for the threading module, it should also be pretty
straight-forward to go in the reverse direction.

Con: You won't have true concurrency because of the GIL.

Cheers,
Ian