Python Snippets

Reload read nodes

1. # Reload all Read nodes
2. def reloadRead():
3.     if nuke.selectedNodes('Read'):
4.         for i in nuke.selectedNodes('Read'):
5.             i['reload'].execute()
6.     else:
7.         for i in nuke.allNodes('Read'):
8.             i['reload'].execute()
9. nuke.menu('Nuke').addCommand('Sanjeev/Reload all', 'reloadRead()', 'ctrl+r')

Set label to nodes

1. def setLabel():   
2.         # Panel Creation
3.         panel = nuke.Panel("Set Label      ...by Sanjeev", 150)
4. 
   
5.         # Knobs Creation
6.         panel.addSingleLineInput('New Label', '')
7. 
   
8.         # Buttons
9.         panel.addButton('Cancel')
10.         panel.addButton('Ok')
11.         result = panel.show()
12.         print result
13.      
14.         # Action after getting result
15.         if result == 1:
16.             newLabel= panel.value("New Label")
17.             for i in nuke.selectedNodes():
18.                 i['label'].setValue(newLabel)
19. 
    
20. setLabel()

Shuffle between channels

1. try:
2.     for i in nuke.selectedNodes():
3.         bol= next((True for k in i.allKnobs() if k.name()=='channels'), False)
4.         if bol:
5.             ### Channel change happen here###
6.             if i.knob('channels').value() == 'alpha':
7.                 i.knob('channels').setValue('rgba')
8.             elif i.knob('channels').value() == 'rgba':
9.                 i.knob('channels').setValue('all')
10.             else:
11.                 i.knob('channels').setValue('alpha')
12.              
13.         if not bol:
14.             raise error
15. except:
16.     nuke.message( "Some of the node doesn't have Channels!")