help(nuke.delete)
e.g.
nuke.delete(nuke.toNode("Blur1"))
help(nuke.toNode)
# Result: Help on built-in function toNode in module _nuke:
toNode(...)
toNode(s) -> Node
Search for a node in the DAG by name and return it as a Python object.
@param s: Node name.
@return: Node or None if it does not exist.