[Python] How to modify and save already opened Excel file

I have Python script which use data from a .xlsx file and also write to this file. I'm looking for a solution how to proceed script and keep open a .xlsx file.

Description:

1. User has opened data.xlsx
2. Start Python script which reads, writes and saves data to data.xlsx
3. After the script finishes, the user sees the updated data.xlsx

import openpyxl
import datetime

email_list_path = "d:\\test folder\\data.xlsx"

wb = openpyxl.load_workbook(email_list_path)

seznam_adres = wb["mailing list"]

for i in range(2, 5 + 1):

verze_emailu = seznam_adres.cell(row=i, column=6).value

cas = datetime.datetime.now()
seznam_adres.cell(row=i, column=5).value = cas.strftime('%x %X')

wb.save('email_list.xlsx')


I'm useing openpyxl to manage .xlsx file and if I save it wb.save('data.xlsx') I get this error:

> Traceback (most recent call last):
> File "D:\\test folder\\Send_email.py", line 141, in \<module\>
> wb.save('email_list.xlsx')
>
> File "D:\\test folder\\venv\\lib\\site-packages\\openpyxl\\workbook\\workbook.py", line 386, in save
> save_workbook(self, filename)
>
> File "D:\\test folder\\venv\\lib\\site-packages\\openpyxl\\writer\\excel.py", line 291, in save_workbook
> archive = ZipFile(filename, 'w', ZIP_DEFLATED, allowZip64=True)
>
> File "C:\\Program Files\\Python310\\lib\\zipfile.py", line 1249, in __init__
> self.fp = io.open(file, filemode)
> PermissionError: \[Errno 13\] Permission denied: 'email_list.xlsx'

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