@property
    def columns(self):

        max_row = self.get_highest_row()

        cols = []

        for col_idx in range(self.get_highest_column()):
            col = get_column_letter(col_idx+1)
            res = self.range((col, col, max_row) % '%s1:%s%d')
            cols.append(tuple([x[0] for x in res]))


        return tuple(cols)
dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/tablib-0.10.0/tablib/packages/openpyxl/worksheet.py/Worksheet.columns/swapped operands of `%`