Real time event accuracy

[Tobiah]

I'd like to send MIDI events from python to another
program.  I'd like advice as to how to accurately
time the events.  I'll have a list of floating point
start times in seconds for the events, and I'd like to send them
off as close to the correct time as possible.

I'd also appreciate suggestions and pointers to a 
suitable python MIDI library, and maybe an outline
of what must be done to get the MIDI events to 
the other program's MIDI in.

Thanks,

Tobiah