(self, indexes)
Return cost and queried info.

        Parameters
        ----------
        indexes: array
            Queried indexes.

        Returns
        -------
        Labels of queried indexes AND cost
Return cost and queried info.
Return cost and queried info .
def query_by_index(self, indexes):
        """Return cost and queried info.

        Parameters
        ----------
        indexes: array
            Queried indexes.

        Returns
        -------
        Labels of queried indexes AND cost
        """
        pass
def query_by_index ( self , indexes ) : pass