multiprocessing.Pool, its queue, and pre-emption

[John Ladasky]

Ah. Now, see?  Having the right vocabulary helps.  Searching for
"priority queue" brings up this discussion from back in January:

http://groups.google.com/group/comp.lang.python/browse_frm/thread/b69aeced28634898

Now, this discussion refers to a PriorityPool class which doesn't
appear to be a standard part of Python (2.6, anyway).  But I'm not the
first one to ask the question, and there's code out there.