Workbook protection in openpyxl

I am trying to secure an Excel workbook using openpyxl.

So far I have been looking into various potentially relevant classes, but I cannot find a method set_password

, for example, for Worksheets .

There is a workbook.protection that I tried my luck with. My code, reduced to an absolute relevant minimum, looks like this:

from openpyxl import Workbook
from openpyxl.workbook.protection import WorkbookProtection

wb = Workbook()
wb.security = WorkbookProtection(workbookPassword='0000', revisionsPassword = '0000', lockWindows = True, lockStructure = True, lockRevision = True)
wb.create_sheet("testSheet")
wb.save("test.xlsx")

      

        
        
        
      

    

I have no errors, but no protection. Any help would be much appreciated.