Some usefull Python snippets for nuke…
Disable “postage stamps” on all nodes:
for a in nuke.allNodes():
try:
a['postage_stamp'].setValue(0)
except:
pass
Check if a node exist:
if nuke.toNode(name) is not None: exists=True #Or use "nuke.exists(name_of_node)"
Print inputs dependencies of a selected node:
for a in nuke.selectedNode().dependencies():
print a.name()
Print inputs dependent of a selected node:
for a in nuke.selectedNode().dependent():
print a.name()
Remove all animation from a selected nodes:
for a in nuke.selectedNode().knobs():
nuke.selectedNode()[a].clearAnimated()
Copy selected node with connections:
node = nuke.selectedNode()
#clean selection
for n in nuke.selectedNodes():
n.setSelected(False)
#copy
node.setSelected(True)
nuke.nodeCopy("%clipboard%")
node.setSelected(False)
#paste
copyNode = nuke.nodePaste("%clipboard%")
copyNode.setSelected(False)
nuke.show(copyNode)
#connection
for i in range(node.inputs()):
copyNode.setInput(i, node.input(i))
#positions
copyNode['xpos'].setValue(node.xpos()+25)
copyNode['ypos'].setValue(node.ypos()+25)
Disable heavy nodes like – Defocus, VectorBlur, Convolve, oflow, TVIscale:
for s in nuke.allNodes():
classTypes = ['Defocus' , 'VectorBlur', 'Convolve', 'oflow', 'TVIscale']
for n in classTypes:
if n in s.Class():
s['disable'].setValue(1)
Change all Merge nodes with “mask” operation mask in bbox “intersection” and ones with “stensil” in bbox “B”:
n = nuke.allNodes()
for i in n:
if i.Class() == "Merge2":
if i.knob("operation").value() == "mask":
i.knob("bbox").setValue("intersection")
elif i.knob("operation").value() == "stencil":
i.knob("bbox").setValue("B")
else:
pass
Set all the merges to bbox B:
for n in nuke.allNodes('Merge2'):
n['bbox'].setValue("B")
Disconnect all viewers at the start (To add on your Menu.py):
def disconnectViewers():
nuke.selectAll()
nuke.invertSelection()
for n in nuke.allNodes():
if n.Class() == "Viewer":
n['selected'].setValue(True)
nuke.extractSelected()
nuke.addOnScriptLoad(disconnectViewers)
Change to ‘hold’ instead of ‘black’ in all Read Nodes(for both before and after):
for n in nuke.selectedNodes('Read'):
n['before'].setValue(0)
n['after'].setValue(0)