[Patches] [ python-Patches-1676820 ] Add a PeriodicTimer to threading

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Patches item #1676820, was opened at 2007-03-08 22:28
Message generated for change (Comment added) made by loewis
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Category: Library (Lib)
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Björn Lindqvist (sonderblade)
Assigned to: Nobody/Anonymous (nobody)
Summary: Add a PeriodicTimer to threading

Initial Comment:
I have often wanted a timer in Python with the same functions as Javas Timer (http://java.sun.com/javase/6/docs/api/java/util/Timer.html). I want it repeating instead of being just a one-shot thing like Pythons Timer class. 

Here is a patch that adds such a class to the threading module. You then use it like this:

import threading

def hello():
    print "Hi there!"

t = threading.PeriodicTimer(5, hello)
t.start()    # "Hi there!" will be printed every five seconds.

The use cases for this class is things like updating canvases, updating simulations and polling stuff. I can provide documentation and unit test patches if this class is deemed worthy.


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>Comment By: Martin v. Löwis (loewis)
Date: 2007-03-09 08:15

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Looks fine to me. The only issue I see is naming: To stop a periodic
timer, shouldn't the method name be "stop" rather than "cancel"? Also, as
you can hold onto the timer, make sure invoking start/'end' multiple times
in arbitrary order gives meaningful results.

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You can respond by visiting: 
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