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Re: How to terminate the function that runs every n seconds

From Grant Edwards <invalid@invalid.invalid>
Newsgroups comp.lang.python
Subject Re: How to terminate the function that runs every n seconds
Date 2015-01-14 17:37 +0000
Organization PANIX Public Access Internet and UNIX, NYC
Message-ID <m969fs$cic$1@reader1.panix.com> (permalink)
References <CACT3xuWvN=zUs5CmuxceG9yv2gPWkmxF2dTgWOr8WqmaJxag+A@mail.gmail.com> <CACT3xuUr-07yW-FjiKBjPbsbn5j7r1vUfu1E0A6Myz=7sYpnzA@mail.gmail.com> <54B69A5B.5000801@davea.name> <mailman.17726.1421254466.18130.python-list@python.org>

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On 2015-01-14, Mark Lawrence <breamoreboy@yahoo.co.uk> wrote:
> On 14/01/2015 16:33, Dave Angel wrote:
>
>> Note that neither Timer nor sleep makes any promises about how
>> accurately it matches the requested time.
>
> Reminds me of working on Telematics S200/300/4000/5000 telecomms kit in 
> the early 90s where the timers were mains based, so a one hour timer 
> would go off at about one hour, 30 seconds.

I don't understand.  Power line frequencies are _very_ accurate and
have been relied upon for timekeeping since the 1930s.  We're talking
a few hundred PPM over a 24 hour period.  A 30 second error over a one
hour period seems _really_ high.

-- 
Grant Edwards               grant.b.edwards        Yow! All right, you
                                  at               degenerates!  I want
                              gmail.com            this place evacuated in
                                                   20 seconds!

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Re: How to terminate the function that runs every n seconds Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-01-14 16:54 +0000
  Re: How to terminate the function that runs every n seconds Grant Edwards <invalid@invalid.invalid> - 2015-01-14 17:37 +0000
    Re: How to terminate the function that runs every n seconds Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-01-14 17:54 +0000
      Re: How to terminate the function that runs every n seconds Grant Edwards <invalid@invalid.invalid> - 2015-01-14 18:05 +0000

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