Losing merged cells border while editing Excel file with openpyxl

Question

I have two sheets in an Excel file and the first one is a cover sheet which I don\'t need to edit. There are a few merged cells in the cover sheet, and when I edit the file usin

Answer 1

If you are using openpyxl 2.4, the solution offered by micki_mouse may not work. I managed to make it work by tweaking it this way:

from openpyxl import load_workbook
from openpyxl.utils import range_boundaries

wb = load_workbook(template_path)
ws = wb.active
for merged_cells in ws.merged_cell_ranges:
    min_col, min_row, max_col, max_row = range_boundaries(merged_cells)
    style = ws.cell(row=min_row, column=min_col)._style
    for col in range(min_col, max_col + 1):
        for row in range(min_row, max_row + 1):
        ws.cell(row=row, column=col)._style = style

Basically, you have to use "merged_cell_ranges" (deprecated in 2.5.0-b1) to correctly access the merged cells within the worksheet. You also must specify explicitely in the cell constructor the row and column