do something in time interval

Jerry Hill malaclypse2 at gmail.com
Mon Oct 6 20:55:55 CEST 2008


On Mon, Oct 6, 2008 at 2:07 PM, Petr Jakes <petr.jakes.tpc at gmail.com> wrote:
> I have infinitive loop running script and I would like to check
> something periodically after 5 seconds (minutes, hours...) time period
> (I do not mean time.sleep(5) ). Till now, I have following script, but
> I think there must be something more elegant.

Take a look at the sched module.
http://www.python.org/doc/2.5.2/lib/module-sched.html

> eventFlag = False
> while 1:
>    time.sleep(0.01)
>    seconds = time.time()
>    if not int(seconds % (5)):
>        if eventFlag:
>            print "5 seconds, hurray"
>            eventFlag = False
>    else:
>        eventFlag = True

Using sched, I think you would re-write this as:

import sched, time
s=sched.scheduler(time.time, time.sleep)

def do_event():
    print "5 seconds, hurray!"
    s.enter(5, 1, do_event, ())

s.enter(5, 1, do_event, ())
s.run()

That will run do_event() after five seconds, and then do_event() puts
itself back in the queue to be executed in another 5 seconds.

-- 
Jerry



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