Okay, a few last minute comments as I skim through there:

Thread safety: All those values need to be bumped up a notch to make room
for the real 0:

0: Threads may not share the module.

And perhaps the point needs to be made that "share" means "two threads
using the same resource without a mutex". With a mutex, and the right user
locking code, anything ought to be shareable.

-- 
Andy Dustman  (ICQ#32922760)    You should always say "spam" and "eggs"
ComStar Communications Corp.                 instead of "foo" and "bar"
(706) 549-7689 | PGP KeyID=0xC72F3F1D   in Python examples. (Mark Lutz)