Terry

Hi Doug

Sorry if it sounds like I'm being a PITA, but I really recommend reading the source code and writing & playing with a tiny example. Also see

http://twistedmatrix.com/documents/8.2.0/api/twisted.internet.task.Loop

ingCall.html

I suggest this because it's by far the best way to learn these things. And if you're using Twisted in any serious way, it's hard to get by without getting closely acquainted with some of the code.

BTW, yes, LoopingCall will reschedule in a sensible way, supposing your task returns a deferred that takes a long time to fire :-) Try it.

Terry

[Doug Farrell] Don't mind the PITA at all, I actuall did read the source code and just didn't 'get it' so much. In my case the function that LoopingCall was passed was actually doing the work, not returning a Deferred. However, I'm going to look into doing that. Thanks for your feedback and advice, Doug

per

http://twistedmatrix.com/documents/current/api/twisted.internet.task.Lo

opingCall.html

If someFunction returns a Deferred, it will not be rescheduled if the Deferred has not fired.

e.g.

def someFunction(): d = someDeferredReturningOperation() d.addCallbacks(success, error) return d

lp = LoopingCall(someFunction) lp.start(5.0) # run every 5 seconds

Lucas

[Doug Farrell] Lucas, Thanks for your response and feedback. In my sample code the someFunction() code was actually doing the work I wanted, not creating a deferred as your sample shows. However, I'm going to try that out and give it a run. Thanks! Doug