Is it possible to overwrite existing data in .xlsx file with openpyxl?

Question

Say I want to update som data in example1.xlsx. Is this possible to do using openpyxl without having to save it as a new file?

Answer 1

As far as I can tell you can open a workbook with openpyxl, modify some data, then save the workbook in place:

wb = openpyxl.load_workbook('path\\to\\workbook.xlsx')
c = wb['Sheet1']['A1']
c.value = 'hello'
wb.save('path\\to\\workbook.xlsx')

If you're saying that your workbook is too big to manipulate in this way, it looks as if you would have to open it in read-only mode , manipulate the data as you read it in, and write it to a new workbook in write-only mode .