hou.node function
Returns a node by its path string. Returns None if the node does not exist.
The path can be absolute (starting from the root of the scene hierarchy with /) or relative to the current value of hou.pwd() (hou.pwd() is available during the evaluation of parameters, so you can use it in Python expressions to make relative references).
Usage
node(path) → hou.Node or None
Raises hou.NotAvailable if you call it from MPlay.