Apply borders to all cells in a range with openpyxl

Question

I have a script that takes a pandas dataframe and chops it up into several hundred chunks and saves each chunk as a separate excel file. Each chunk will have the same number

Answer 1

Decision that works on openpyxl 2.3.5

from openpyxl.styles import Border, Side

def set_border(ws, cell_range):
    border = Border(left=Side(border_style='thin', color='000000'),
                right=Side(border_style='thin', color='000000'),
                top=Side(border_style='thin', color='000000'),
                bottom=Side(border_style='thin', color='000000'))

    rows = ws.iter_rows(cell_range)
    for row in rows:
        for cell in row:
            cell.border = border

set_border(worksheet, 'A5:C10')