Creating and naming column in openpyxl

Question

Background-
The following code snippet will iterate over all worksheets in a workbook, and write a formula to every last column –

import openpyxl

filename = 'filename.xlsx'
filename_output = 'filename_output.xlsx'
wb = openpyxl.load_workbook(filename)

for sheet in wb.worksheets:
    sheet.insert_cols(sheet.max_column)

    for row in sheet.iter_rows():
        row[-1].value = "=SUMIFS(J:J,M:M,@M:M)"

    wb.save(filename_output)

Question –
I cannot find documentation on how to name the column. Does anyone know how to achieve this?

Context –
I want this column (in each worksheet) to be called ‘Calculation’.

Asked By: William

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Source

Answer 1

To get the last column, you can use sheet.max_column. Once you have updated the formulas, you can use sheet.cell(1,col).value = "Calc" to update the header. Updated code below…

import openpyxl

filename = 'filename.xlsx'
filename_output = 'filename_output.xlsx'
wb = openpyxl.load_workbook(filename)

for sheet in wb.worksheets:
    sheet.insert_cols(sheet.max_column)

    for row in sheet.iter_rows():
        row[-1].value = "=SUMIFS(J:J,M:M,@M:M)"
    
    sheet.cell(1,sheet.max_column).value = "Calculation" ## Add line inside FOR loop

wb.save(filename_output)

Output would look something like this.

Answered By: Redox

Creating and naming column in openpyxl

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