Thanks a lot Richard, seems to work great! I'm not sure I follow the use of two classes and the threading part still seems like a mystery to me, but I'll study your code and hopefully get a better understanding of this.
Cheers! ------------------------------- Simon Björk Compositor/TD +46 (0)70-2859503 www.bjorkvisuals.com 2014-04-25 19:31 GMT+02:00 Richard Bobo <richb...@mac.com>: > Simon, > > OK, based on Nathan’s suggestions and a little help from our in-house > programmer, I have a working version: > > http://pastebin.com/Siy8VEV8 > > There are two classes now — one for the Write node Selection/Render panel > and one for the threaded nuke.execute command. > > In the knobChanged method, when you press the render button, the > renderWrites class in initialized and started -- with an argument of the > name of the currently selected Write node from the drop down menu. That is > passed to the renderWrites class and provided as the argument to the > nuke.execute function inside executeInMainThread. > > Nathan — Is this pretty much what you meant…? > > > Rich > > > Rich Bobo > Senior VFX Compositor > Armstrong White > Email: rich.b...@armstrong-white.com > http://armstrong-white.com/ > > Email: richb...@mac.com > Mobile: (248) 840-2665 > Web: http://richbobo.com/ > > “Many of the great achievements of the world were accomplished by tired > and discouraged men who kept on working.” > - Unknown > > On Apr 25, 2014, at 7:17 AM, Simon Björk <bjork.si...@gmail.com> wrote: > > Thanks all for your replys. > > I must admit, I'm having a hard time to grasp the solutions. Python panels > are a black hole for me. Just today I ran into this issue once again when > trying to add new trackers to a tracker node (node["tracks"].execute()). > > Nathan, do you know of any example scripts that uses your suggestions? > > Cheers, > Simon > > > > 2014-04-24 22:51 GMT+02:00 Richard Bobo <richb...@mac.com>: > >> Thanks, Nathan. >> >> On Apr 24, 2014, at 3:49 PM, Nathan Rusch <nathan_ru...@hotmail.com> >> wrote: >> >> A few things if you’re going to use threads: >> >> - I would recommend using `threading` instead of `thread`, as it’s more >> approachable, and joining your thread if you want to block until the render >> is done. >> >> >> I started by using threading, but then found a different example that >> used thread, so I went down that road, instead. I’ll read up on the >> differences... >> >> >> t = threading.Thread(target=self.renderWrites) >> t.start() >> t.join() >> - You may want to consider moving the thread target function off of your >> dialog class, and just passing the Write node(s) to it via the Thread >> object. >> >> >> I was wondering about that - if it was a good idea to combine the two or >> not… >> >> - There’s no reason to use `nuke.executeInMainThreadWithResult` unless >> you actually need to get a return value. >> >> >> When I was getting nothing at all to work, I wondered if there was some >> result that I needed to wait for (just poking around in the dark), so >> that’s why I switched it. Then, when things actually started to work >> better, I never switched it back… >> >> - You need to pass the function and write node through >> `nuke.executeInMainThread` separately. Otherwise, you’re just calling >> `nuke.execute(writeNode)` and passing the result of that (which is probably >> None) to `nuke.executeInMainThread`. >> >> nuke.executeInMainThread(nuke.execute, args=(writeNode,), kwargs= >> {'continueOnError':True}) >> >> >> I’ll have to let that settle into my brain for a bit. Still partly cloudy >> on a lot of how this is supposed to work… >> >> >> - A more idiomatic way to handle exceptions: >> >> try: >> # Something >> except Exception as e: >> print 'ERROR: %s' % e # Or whatever you want to do >> >> >> >> >> I did have… >> except (TypeError, RuntimeError) as e: >> print “ERROR:”, e >> >> But, wondered if I could get more info by trying to catch anything and >> everything… It didn’t help me diagnose anything better, though. >> >> >> Hope this helps. >> >> >> Yes, I’m sure it will, once I can digest it and try out some more >> examples. >> >> Thanks! >> Rich >> >> >> >> -Nathan >> >> *From:* Richard Bobo <richb...@mac.com> >> *Sent:* Thursday, April 24, 2014 12:22 PM >> *To:* Nuke Python discussion <nuke-python@support.thefoundry.co.uk> >> *Subject:* Re: [Nuke-python] Execute Write from Python panel >> >> Simon, >> >> Since I’ve never tried to do coding for a separate thread, I thought I’d >> give it a try: >> >> http://pastebin.com/niEV5FPF >> >> My version has some of the very same elements as Mitja’s does. And, my >> code works -- *most* of the time... >> >> ...However, sometimes it gets a... >> "TypeError: expected callable object, NoneType found” >> ...and sometimes it gets a… >> “TypeError: ‘NoneType’ object is unscriptable” >> ...and sometimes it gets a… >> “RunTimeError: Cancelled” >> >> So, not too reliable!! (8^P >> >> If my co-worker Python-guru-friend was here today, I’m sure he could help >> me debug the problem. Perhaps someone else here could help…? >> >> So close, yet, so far... >> >> Rich >> >> >> Rich Bobo >> Senior VFX Compositor >> Armstrong White >> Email: rich.b...@armstrong-white.com >> http://armstrong-white.com/ >> >> Email: richb...@mac.com >> Mobile: (248) 840-2665 >> Web: http://richbobo.com/ >> >> "What you can do, or dream you can do, begin it; boldness has genius, >> power and magic in it." >> - Johann von Goethe >> >> >> >> >> >> On Apr 24, 2014, at 3:08 AM, Simon Björk <bjork.si...@gmail.com> wrote: >> >> Hi Mitja, >> >> thanks for the reply. I tested you code, but unfortunately I still get >> the "I'm already executing something else" error. Does it work for you? >> >> Best regards, >> Simon >> >> >> 2014-04-24 8:19 GMT+02:00 Mtja Müller-Jend <filmk...@gmx.de>: >> Hi Simon, >> >> try to use >> threading<http://docs.thefoundry.co.uk/nuke/80/pythondevguide/threading.html>to >> execute the node: >> http://pastebin.com/06azNCzx >> >> Cheerz, >> >> Mitja >> >> Am 4/23/2014 11:54 PM, schrieb Simon Björk: >> I'm trying to execute a Write node from a Python panel, but I'm not >> having any luck. As I try to exectute the render I get a RuntimeError: *I'm >> already executing something else.* >> >> One solution would be to use a Nuke panel instead, but I would really >> need a Python panel for this script. See short example script here: >> http://pastebin.com/NzStQNhk. >> >> I would really appriciate some help on this. >> >> Best regards, >> Simon >> >> >> _______________________________________________ >> Nuke-python mailing listnuke-pyt...@support.thefoundry.co.uk, >> http://forums.thefoundry.co.uk/http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-python >> >> >> >> _______________________________________________ >> Nuke-python mailing list >> Nuke-python@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ >> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-python >> >> >> _______________________________________________ >> Nuke-python mailing list >> Nuke-python@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ >> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-python >> >> >> ------------------------------ >> _______________________________________________ >> Nuke-python mailing list >> Nuke-python@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ >> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-python >> _______________________________________________ >> Nuke-python mailing list >> Nuke-python@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ >> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-python >> >> >> >> _______________________________________________ >> Nuke-python mailing list >> Nuke-python@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ >> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-python >> >> > _______________________________________________ > Nuke-python mailing list > Nuke-python@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-python > > > > _______________________________________________ > Nuke-python mailing list > Nuke-python@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-python > >
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