How to use the papermill.log.logger.info function in papermill

def cell_complete(self, cell, cell_index=None, **kwargs):
        """
        Finalize metadata for a cell and save notebook.

        Optionally called by engines during execution to finalize the
        metadata for a cell and save the notebook to the output path.
        """
        end_time = self.now()

        if self.log_output:
            ceel_num = cell_index + 1 if cell_index is not None else ''
            logger.info('Ending Cell {:-<43}'.format(ceel_num))
            # Ensure our last cell messages are not buffered by python
            sys.stdout.flush()
            sys.stderr.flush()

        cell.metadata.papermill['end_time'] = end_time.isoformat()
        if cell.metadata.papermill.get('start_time'):
            start_time = dateutil.parser.parse(cell.metadata.papermill['start_time'])
            cell.metadata.papermill['duration'] = (end_time - start_time).total_seconds()
        if cell.metadata.papermill['status'] != self.FAILED:
            cell.metadata.papermill['status'] = self.COMPLETED

        self.save()
        if self.pbar:
            self.pbar.update(1)

Flag for whether or not to hide input.
    cwd : str, optional
        Working directory to use when executing the notebook
    **kwargs
        Arbitrary keyword arguments to pass to the notebook engine

    Returns
    -------
    nb : NotebookNode
       Executed notebook object
    """
    path_parameters = add_builtin_parameters(parameters)
    input_path = parameterize_path(input_path, path_parameters)
    output_path = parameterize_path(output_path, path_parameters)

    logger.info("Input Notebook:  %s" % get_pretty_path(input_path))
    logger.info("Output Notebook: %s" % get_pretty_path(output_path))
    with local_file_io_cwd():
        if cwd is not None:
            logger.info("Working directory: {}".format(get_pretty_path(cwd)))

        nb = load_notebook_node(input_path)

        # Parameterize the Notebook.
        if parameters:
            nb = parameterize_notebook(nb, parameters, report_mode)

        nb = prepare_notebook_metadata(nb, input_path, output_path, report_mode)

        if not prepare_only:
            # Fetch the kernel name if it's not supplied
            kernel_name = kernel_name or nb.metadata.kernelspec.name

def cell_start(self, cell, cell_index=None, **kwargs):
        """
        Set and save a cell's start state.

        Optionally called by engines during execution to initialize the
        metadata for a cell and save the notebook to the output path.
        """
        if self.log_output:
            ceel_num = cell_index + 1 if cell_index is not None else ''
            logger.info('Executing Cell {:-<40}'.format(ceel_num))

        cell.metadata.papermill['start_time'] = self.now().isoformat()
        cell.metadata.papermill["status"] = self.RUNNING
        cell.metadata.papermill['exception'] = False

        self.save()

Arbitrary keyword arguments to pass to the notebook engine

    Returns
    -------
    nb : NotebookNode
       Executed notebook object
    """
    path_parameters = add_builtin_parameters(parameters)
    input_path = parameterize_path(input_path, path_parameters)
    output_path = parameterize_path(output_path, path_parameters)

    logger.info("Input Notebook:  %s" % get_pretty_path(input_path))
    logger.info("Output Notebook: %s" % get_pretty_path(output_path))
    with local_file_io_cwd():
        if cwd is not None:
            logger.info("Working directory: {}".format(get_pretty_path(cwd)))

        nb = load_notebook_node(input_path)

        # Parameterize the Notebook.
        if parameters:
            nb = parameterize_notebook(nb, parameters, report_mode)

        nb = prepare_notebook_metadata(nb, input_path, output_path, report_mode)

        if not prepare_only:
            # Fetch the kernel name if it's not supplied
            kernel_name = kernel_name or nb.metadata.kernelspec.name

            # Execute the Notebook in `cwd` if it is set
            with chdir(cwd):
                nb = papermill_engines.execute_notebook_with_engine(