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.
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.
- There’s no reason to use `nuke.executeInMainThreadWithResult` unless you
actually need to get a return value.
- 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})
- A more idiomatic way to handle exceptions:
try:
# Something
except Exception as e:
print 'ERROR: %s' % e # Or whatever you want to do
Hope this helps.
-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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