def register_column(self,
                        column,
                        expr,
                        deltas=None,
                        checkpoints=None,
                        odo_kwargs=None):
        """Explicitly map a single bound column to a collection of blaze
        expressions. The expressions need to have ``timestamp`` and ``as_of``
        columns.

        Parameters
        ----------
        column : BoundColumn
            The pipeline dataset to map to the given expressions.
        expr : Expr
            The baseline values.
        deltas : Expr, optional
            The deltas for the data.
        checkpoints : Expr, optional
            The forward fill checkpoints for the data.
        odo_kwargs : dict, optional
            The keyword arguments to forward to the odo calls internally.

        See Also
        --------
        :func:`zipline.pipeline.loaders.blaze.from_blaze`
        """
        self._table_expressions[column] = ExprData(
            expr,
            deltas,
            checkpoints,
            odo_kwargs,
        )
def register_column ( self , column , expr , deltas = None , checkpoints = None , odo_kwargs = None ) : self . _table_expressions [ column ] = ExprData ( expr , deltas , checkpoints , odo_kwargs , )
Explicitly map a single bound column to a collection of blaze
        expressions. The expressions need to have ``timestamp`` and ``as_of``
        columns.

        Parameters
        ----------
        column : BoundColumn
            The pipeline dataset to map to the given expressions.
        expr : Expr
            The baseline values.
        deltas : Expr, optional
            The deltas for the data.
        checkpoints : Expr, optional
            The forward fill checkpoints for the data.
        odo_kwargs : dict, optional
            The keyword arguments to forward to the odo calls internally.

        See Also
        --------
        :func:`zipline.pipeline.loaders.blaze.from_blaze`