human
Complete this python program:
def _node_not_implemented(node_name, cls):
assistant
#Here is the Python code you requested.

    """Return a function that raises a NotImplementedError with a passed node
    name.
    """
    def f(self, *args, **kwargs):
        raise NotImplementedError('{name!r}    nodes    are    not    implemented'.format(name=node_name))
    return f