A getattr lookup is probably the most straightforward option:
theClass = 'Card2'
nodeConstructor = getattr(nuke.nodes, theClass, None)
if nodeConstructor is not None:
card = nodeConstructor()
You could condense the last 3 lines into "getattr(nuke.nodes, theClass)()" if
you know your class name will never be invalid, but that’s slightly risky.
Alternatively, you could simply clear the node selection before calling
nuke.createNode()
theClass = 'Card2'
nukescripts.clear_selection_recursive()
card = nuke.createNode(theClass)
There are some other creative solutions too, but those are probably the most
straightforward.
-Nathan
From: j00ey
Sent: Wednesday, July 06, 2011 2:38 PM
To: [email protected]
Subject: [Nuke-python] how to use nuke.nodes to create nodes with
stringvariables
Hi all
I'm starting out in python so this is very simple one. I'm trying to write a
simple proc that will create a Card or a Card3D depending on user input. I can
get it to work with nuke.createNode but if the current selection is eg a read
node the card gets connected to it which I don't want.
I know I can create an unconnected node with eg nuke.nodes.Card2() but I want
to pass user input as the class and I can't figure out the syntax.
Can anyone help? Thanks in advance.
##query user for Card or Card3D
type=nuke.getInput('Card or Card3D','Card')
if (type=='card') | (type=='Card'):
cardClass='Card2'
elif (type=='card3D') | (type=='Card3D'):
cardClass='Card3D'
#card=nuke.createNode(cardClass)
card=nuke.nodes...
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