python openpyxl 获取合并的单元格列表，筛选解除单元格合并

        #获取该表所有合并单元格信息并遍历
        for i in ws.merged_cell_ranges:
            #获取合并单元格的开始行、列，结束行、列
            r1, r2, c1, c2 = i.min_row, i.max_row, i.min_col, i.max_col
            #解除合并
            ws2.unmerge_cells(start_row = r1, end_row = r2, start_column = c1, end_column = c2)