def _series_col_letter ( self , series ) : column_number = 1 + series . categories . depth + series . index return self . _column_reference ( column_number )
how to refer to excel column in python xlrd
The letter of the Excel worksheet column in which the data for a series appears .
def _series_col_letter(self, series):
        """
        The letter of the Excel worksheet column in which the data for a
        series appears.
        """
        column_number = 1 + series.categories.depth + series.index
        return self._column_reference(column_number)