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Re: Python scheduler

Frank Millman
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On 21/02/2013 06:04, Rita wrote:
> Hello,
> Here is what I am trying to do. (Currently, I am doing this in cron but
> i need much more granularity). I am trying to run program every 20 secs
> and loop forever. I have several of these types of processes, some
> should run every 5 mins, 10 secs, 20 secs, 1 min and so forth. I was
> wondering what is the best way to do this?
> Also, would Greenlet do something I am asking for?

Don't know if this helps, but ...

I have a program with a main loop that listens for input, and
simultaneously I need to run something in the background on a regular
basis. I use the threading module, like this.

import threading

class Check(threading.Thread):
def __init__(self):
self.event = threading.Event()

def run(self):
event = self.event # make local
while not event.is_set():
[run your activity here]
event.wait(10) # check every 10 seconds

def stop(self):

Before the main loop starts, I have -

check = Check()

When the main loop ends, I have -


For multiple activities, you could have one class per activity, or have
a generic class, and pass in the executable and the timeout as parameters.


Frank Millman

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