python openpyxl 获取合并的单元格列表，筛选解除单元格合并

        for i in ws.merged_cell_ranges:
            flag_index = False
            s = str(i).strip(string.uppercase)
            #if ... flag = True
            if flag_index:
                r1, r2, c1, c2 = i.min_row, i.max_row, i.min_col, i.max_col
                ws2.unmerge_cells(start_row = r1, end_row = r2, start_column = c1, end_column = c2)