Here is the win32 python code for you.

import win32com.client as win32

def excel_sensitivity_label(file_path): """open excel workbook""" xl = win32.Dispatch('Excel.Application') xl.Visible = False wb = xl.Workbooks.Open(file_path) set_sensitiviy_label(wb)

setting sensitivity label

def set_sensitiviy_label(wbook): """set sensitivity label""" label = wbook.SensitivityLabel.CreateLabelInfo() label.AssignmentMethod = 1 #MsoAssignmentMethod.PRIVILEGED # label id and site id can be find in excel through vba sub routine label.LabelId = "a8a73c85-e524-44a6-bd58-7df7ef87be8f" label.SiteId = "6c15903a-880e-4e17-818a-6cb4f7935615" wbook.SensitivityLabel.SetLabel(label, label)

excel_sensitivity_label(file_path)