Run once while loop

Anatoli Hristov tolidtm at gmail.com
Wed Apr 4 09:21:30 EDT 2012


I thing the best will be if I use hundreds of the seconds to print the
message.

for example at 12:00:00:10, but unfortunately I cant see that I can use
hundreds of the seconds.

Does anyone knows if I can use it ?

Thanks

Anatoli



On Wed, Apr 4, 2012 at 2:25 PM, John O'Hagan <research at johnohagan.com>wrote:

> On Tue, 3 Apr 2012 23:00:22 +0200
> Anatoli Hristov <tolidtm at gmail.com> wrote:
>
> > On 03 Apr 2012, at 22:45, Ian Kelly <ian.g.kelly at gmail.com> wrote:
> >
> > > On Tue, Apr 3, 2012 at 2:36 PM, Anatoli Hristov <tolidtm at gmail.com>
> wrote:
> > >> Hi,
> > >>
> > >> I'm trying to do a while loop with condition of time if time is
> > >> 12:00:00 print text, but for this one second the text is printed at
> > >> least 50 times, how can I print only once?
> > >
> > > Set a flag when you print the text to indicate that you've already
> > > printed it, and don't print it again if the flag is set.  When it's no
> > > longer 12:00:00, reset the flag.
> > >
> > > That said, a busy while loop is probably the wrong way to do this,
> > > because it will run your CPU at 100%.  Better would be to put the
> > > thread to sleep with time.sleep() calls or a real event loop with a
> > > timer event.
> > >
> > > Cheers,
> > > Ian
> >
> > Thank you Ian,
> >
> > what if I wait for other conditions if I use time.sleep for 1 sec? it
> > means that all the program is sleeping for a sec.
> >
>
> If I understand correctly, you don't want the whole program to sleep. If
> that's the case, you could use threading.Timer, for example:
>
> import threading, time
>
> def twelve():
>    print("It's twelve o'clock")
>
> local_secs = (time.time() - time.timezone) % (24 * 60 * 60)
> secs_till_12 = 12 * 60 * 60 - (local_secs % (12 * 60 * 60))
>
> wait_till_12 = threading.Timer(secs_till_12, twelve)
> wait_till_12.start()
>
>
> Regards,
>
> John
> --
> http://mail.python.org/mailman/listinfo/python-list
>
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