Python for (Nuke) Compers 0x14 - remaking topnode and recursion

Code and the rig and other stuffs

here’s the nukescript (7kb)

I’ve just put the code on the stickynote as a horrible way to copy it around if you get the script, otherwise if you don’t want to open up nuke:

the_node = nuke.toNode("Scene1")

# manual process
the_node.input(0).input(0).input(0).input(0).input(0).input(0)


def topnode(the_node, max_depth=None):
    """Return the topmost node on the B-stream (input 0)
       go at MOST max_depth nodes (if none, go forever)
       return that node that you found at this depth
       NOTE: first node found is depth 0
    """

    current_node = the_node
    depth = 0
    while True:
        if current_node.input(0) is None:
            return current_node
        else:
            current_node = current_node.input(0)

the_node = nuke.selectedNode()
print (topnode(the_node, 3).name())

the_node.input(0).input(0).input(0).input(0).input(0).input(0)

def topnode_r(the_node):
    """Return the topmost node on the B-stream (input 0)"""

    current_node = the_node
    if current_node.input(0) is None:
        return current_node
    return topnode_r(current_node.input(0))


the_node = nuke.selectedNode()
print(topnode_r(the_node).name())

foo()

def foo():
    return foo()