How to use the scrapbook.models.Notebook function in scrapbook

def read_notebook(path):
    """
    Returns a Notebook object loaded from the location specified at `path`.

    Parameters
    ----------
    path : str
        Path to a notebook `.ipynb` file.

    Returns
    -------
    notebook : object
        A Notebook object.

    """
    return Notebook(path)

def __setitem__(self, key, value):
        # If notebook is a path str then load the notebook.
        if isinstance(value, string_types):
            value = Notebook(value)
        self._notebooks.__setitem__(key, value)

def copy(self):
        cp = Notebook(self.node.copy())
        cp.path = self.path
        return cp