return a single column from the table. This is generally only useful to
        select an indexable

        Parameters
        ----------
        key : object
        column: the column of interest

        Exceptions
        ----------
        raises KeyError if the column is not found (or key is not a valid
            store)
        raises ValueError if the column can not be extracted individually (it
            is part of a data block)

def select_column(self, key, column, **kwargs):
        """
        return a single column from the table. This is generally only useful to
        select an indexable

        Parameters
        ----------
        key : object
        column: the column of interest

        Exceptions
        ----------
        raises KeyError if the column is not found (or key is not a valid
            store)
        raises ValueError if the column can not be extracted individually (it
            is part of a data block)

        """
        return self.get_storer(key).read_column(column=column, **kwargs)