Password Protecting Excel file using Python

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Here’s a workaround I use. It generates a VBS script and calls it from within your python script.

def set_password(excel_file_path, pw):

    from pathlib import Path

    excel_file_path = Path(excel_file_path)

    vbs_script = \
    f"""' Save with password required upon opening

    Set excel_object = CreateObject("Excel.Application")
    Set workbook = excel_object.Workbooks.Open("{excel_file_path}")

    excel_object.DisplayAlerts = False
    excel_object.Visible = False

    workbook.SaveAs "{excel_file_path}",, "{pw}"

    excel_object.Application.Quit
    """

    # write
    vbs_script_path = excel_file_path.parent.joinpath("set_pw.vbs")
    with open(vbs_script_path, "w") as file:
        file.write(vbs_script)

    #execute
    subprocess.call(['cscript.exe', str(vbs_script_path)])

    # remove
    vbs_script_path.unlink()

    return None

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