def values(self, column_major=False):
        """Return a nested list with the worksheet values.

        Args:
            column_major (bool): as list of columns (default list of rows)
        Returns:
            list: list of lists with values
        """
        if column_major:
            return list(map(list, zip(*self._values)))
        return [row[:] for row in self._values]
Return a nested list with the worksheet values.

        Args:
            column_major (bool): as list of columns (default list of rows)
        Returns:
            list: list of lists with values