(self, step)
Save a resumable checkpoint.

        Args:
            step (int): step number

        Returns:
            checkpoint: the saved object
            checkpoint_name: name (or path) of the saved checkpoint
Save a resumable checkpoint.
Save a resumable checkpoint .
def _save(self, step):
        """ Save a resumable checkpoint.

        Args:
            step (int): step number

        Returns:
            checkpoint: the saved object
            checkpoint_name: name (or path) of the saved checkpoint
        """
        raise NotImplementedError()
def _save ( self , step ) : raise NotImplementedError ( )