Count Nodes

countnodes.py

# A Houdini shelf tool to count the total number of nodes in the current file.
# Opens up a small dialogue window to select the node to count under.
# You can get a nice Python icon by pointing the Icon parameter to $HFS/houdini/help/icons/large/MISC/python_official.png

def countNodes(count, nodes):
    for n in nodes:
        count += 1
        if n.allSubChildren():
            countNodes(count, n.allSubChildren())
    return count

selNodeName = hou.ui.selectNode(initial_node=hou.node('/obj'))

# Instead of getting annoying error messages when 'Clear' is poked in the menu, quit the script
if not selNodeName:
    # Might be a cleaner, sanctioned way to do this in Houdini with the hou module...
    raise SystemExit

selNode = hou.node(selNodeName)
numNodes = 0

if selNode.allSubChildren():
    numNodes = countNodes(numNodes,selNode.allSubChildren())

msg = 'Nodes under %s: %i' %(selNodeName,numNodes)