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From: Juan Christian <juan0christian@gmail.com>
Date: Thu, 18 Dec 2014 12:37:50 +0000
Subject: Re: Is there a way to schedule my script?
To: "Steven D'Aprano" <steve+comp.lang.python@pearwood.info>, python-list@python.org
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On Wed Dec 17 2014 at 11:04:16 PM Juan Christian <juan0christian@gmail.com>
wrote:
Thanks. That was a great answer. I'll redo my code. It's running and will
only run in my Docker container (Ubuntu Server 14.04.1) so I'll use cron.

Indeed, currently I'm using something like that:

while True:
if 9 < datetime.now().hour < 24:
# do stuff
sleep(randint(3, 6) * 60)
else:
# see you in 9 hours
sleep(9 * 60 * 60)

I knew it wasn't a good approach, but as least it was running as intended!


I read the cron doc, it's really simple to use, but one think I didn't see
out-of-the-box is a way to set a random time, like 'execute this in a 5~10
min interval', I can only set specific times like 'execute this each
minute, each hour, each 10min' and so on.

I found a 'fix' for that using $RANDOM in the crontab. Another workaround
would be to set a fixed 5min interval in cron and inside my script have a
random int (0 or 1), when 0, the script doesn't execute and 1 it execute,
so that way I'd have a little 'randomness' that I need.

Which approach would be the best?

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<div class=3D"gmail_quote">On Wed Dec 17 2014 at 11:04:16 PM Juan Christian=
 &lt;<a href=3D"mailto:juan0christian@gmail.com">juan0christian@gmail.com</=
a>&gt; wrote:<br>Thanks. That was a great answer. I&#39;ll redo my code. It=
&#39;s running and will only run in my Docker container (Ubuntu Server 14.0=
4.1) so I&#39;ll use cron.<br><br>Indeed, currently I&#39;m using something=
 like that:<br><br>while True:<br>    if 9 &lt; datetime.now().hour &lt; 24=
:<br>        # do stuff<br>        sleep(randint(3, 6) * 60)<br>    else:<b=
r>        # see you in 9 hours<br>        sleep(9 * 60 * 60)<br><br>I knew =
it wasn&#39;t a good approach, but as least it was running as intended!<br>=
<div><br></div><div><br></div><div>I read the cron doc, it&#39;s really sim=
ple to use, but one think I didn&#39;t see out-of-the-box is a way to set a=
 random time, like &#39;execute this in a 5~10 min interval&#39;, I can onl=
y set specific times like &#39;execute this each minute, each hour, each 10=
min&#39; and so on.</div><div><br></div><div>I found a &#39;fix&#39; for th=
at using $RANDOM in the crontab. Another workaround would be to set a fixed=
 5min interval in cron and inside my script have a random int (0 or 1), whe=
n 0, the script doesn&#39;t execute and 1 it execute, so that way I&#39;d h=
ave a little &#39;randomness&#39; that I need.</div><div><br></div><div>Whi=
ch approach would be the best?</div></div>

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