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Does Python have a timer mechanism? i.e. an "after 500 milliseconds, run
this bit of code" sort of thing?
Jul 18 '05 #1
31 26653
Derek Fountain wrote:
Does Python have a timer mechanism? i.e. an "after 500 milliseconds, run
this bit of code" sort of thing?

http://www.python.org/Doc/lib/module-sched.html

but you should perhaps also look into twisteds event-based framework who
does it even better. www.twistedmatrix.com

Jul 18 '05 #2

"Noen" <no***********@ na.no> wrote in message news:zp******** *************@j uliett.dax.net. ..
Derek Fountain wrote:
Does Python have a timer mechanism? i.e. an "after 500 milliseconds, run
this bit of code" sort of thing?

http://www.python.org/Doc/lib/module-sched.html


The above link doesn't work. This does:

http://www.python.org/doc/current/lib/module-sched.html
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Georgy Pruss
E^mail: 'ZDAwMTEyMHQwMz MwQGhvdG1haWwuY 29t\n'.decode(' base64')
Jul 18 '05 #3
> > > Does Python have a timer mechanism? i.e. an "after 500 milliseconds, run
this bit of code" sort of thing?


why not just use the time.sleep() function ?

Jul 18 '05 #4
[Derek Fountain]
Does Python have a timer mechanism? i.e. an "after 500 milliseconds, run
this bit of code" sort of thing?


Like this?

#-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
import threading

def hello():
print "hello, world"

t = threading.Timer (30.0, hello)
t.start() # after 30 seconds, "hello, world" will be printed
#-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

Timers start a new thread of execution.

More info from here

http://www.python.org/doc/current/li...r-objects.html

HTH,

--
alan kennedy
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Jul 18 '05 #5
Dave Harrison wrote:
> > Does Python have a timer mechanism? i.e. an "after 500 milliseconds,
> > run this bit of code" sort of thing?


why not just use the time.sleep() function ?


Because that stops the thread. I want things to continue, and then be
interrupted in order to execute a bit of code. Tcl has the 'after' command:

after 5000 { set disabled 0 }

The script carries on, and after 5 seconds whatever is being done gets
interrupted in order to run a bit of script - in this case set a variable
turning off a disablement of some sort. This makes it trivial to implement
"disable this feature for 5 seconds" kinds of logic.

I can't find anything like that in Python.
Jul 18 '05 #6
Alan Kennedy wrote:
[Derek Fountain]
Does Python have a timer mechanism? i.e. an "after 500 milliseconds, run
this bit of code" sort of thing?


Like this?
http://www.python.org/doc/current/li...r-objects.html


That looks like what I'm after, yes. I haven't looked into threads since
they've represented trouble in every other language I've used. But I'll
have a look into their implementation in Python and see if they're any more
usable here...

Thanks.
Jul 18 '05 #7
At 9:04 PM +0800 27/10/03, Derek Fountain wrote:
Dave Harrison wrote:
> > Does Python have a timer mechanism? i.e. an "after 500 milliseconds,
> > run this bit of code" sort of thing?


why not just use the time.sleep() function ?


Because that stops the thread. I want things to continue, and then be
interrupted in order to execute a bit of code. Tcl has the 'after' command:

after 5000 { set disabled 0 }

The script carries on, and after 5 seconds whatever is being done gets
interrupted in order to run a bit of script - in this case set a variable
turning off a disablement of some sort.


Wow, that must make your scripts so much more interesting to debug ;)

Anthony
--
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HyPEraCtiVE? HeY, WhO aRE YoU cALliNg HypERaCtIve?!
aB*****@wEStNeT .cOm.aU
----------------------------------------------------

Jul 18 '05 #8
At 09:21 PM 10/26/2003, Derek Fountain wrote:
Does Python have a timer mechanism? i.e. an "after 500 milliseconds, run
this bit of code" sort of thing?


Check out the sched and time modules.

Bob Gailer
bg*****@alum.rp i.edu
303 442 2625
---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.525 / Virus Database: 322 - Release Date: 10/9/2003

Jul 18 '05 #9
In article <3f************ ***********@fre enews.iinet.net .au>,
Derek Fountain <no****@hursley .ibm.com> wrote:
Dave Harrison wrote:
> > Does Python have a timer mechanism? i.e. an "after 500 milliseconds,
> > run this bit of code" sort of thing?


why not just use the time.sleep() function ?


Because that stops the thread.


Check out the threading module. In particular, the threading.Timer class.
Jul 18 '05 #10

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