Thanks, Nathan.
On Apr 24, 2014, at 3:49 PM, Nathan Rusch <[email protected]> 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
> Sent: Thursday, April 24, 2014 12:22 PM
> To: Nuke Python discussion
> 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: [email protected]
> http://armstrong-white.com/
>
> Email: [email protected]
> 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 <[email protected]> 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 <[email protected]>:
> Hi Simon,
>
> try to use threading 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
>
>
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