[EMAIL PROTECTED] wrote: > Hi all > > How can I access partial seconds on the system clock? > > I measure air speed and water flow in a heat-exchanger test stand and > count pulses from both water meter and air speed meter. I divide the > amount of these counts over a certain interval with the time of that > interval. Since I only have seconds, I need to wait 100 seconds for may > calculation is I want a precision of 1%. > > The radiator fan that I use can't stand these long intervals, 'cause I > run it with 24V and 50 Amps to get decent airflow (10m/s) through my > heat exchanger. > > Again: how do I get the hundreds of seconds from the system clock? > > In Pascal it was: GetTime( Hr1, Min1, Sec1, cSec1); (yes, I'm that > old).
time.time() returns the system time in seconds since the epoch (1970). The fractional part is relevant. However, be aware that your OS may limit the precision here. I'm not sure, but I think Windows for example doesn't get faster than 10th or 100th of a second. For more precise timing, you might need a special library/extension that works with the cpu timer register or something like that. Diez -- http://mail.python.org/mailman/listinfo/python-list
