Create an instance of a COM object with IClassFactory2 for objects that require licensing.

iclassfactory2.py

import pythoncom
import win32com.client

from uuid import UUID
from ctypes import OleDLL, WinDLL, c_long, c_ulong, byref, WINFUNCTYPE, POINTER, c_char_p, pointer
from ctypes.wintypes import HRESULT

IID_IClassFactory2 = "{B196B28F-BAB4-101A-B69C-00AA00341D07}"

def CoCreateInstanceLicenced(clsid_class, iid_interface=pythoncom.IID_IDispatch, key='', dwClsContext=pythoncom.CLSCTX_SERVER, pythoncom_iid_interface=pythoncom.IID_IDispatch, pythoncom_wrapdisp=True):
    """Uses IClassFactory2::CreateInstanceLic to create a COM object given a licence key."""
    ole = OleDLL("Ole32.dll")
    ole_aut = WinDLL("OleAut32.dll")
    clsid_class = UUID(clsid_class).bytes_le
    iclassfactory2 = UUID(IID_IClassFactory2).bytes_le
    com_classfactory = c_ulong(0)
    hr_gco = ole.CoGetClassObject(clsid_class, dwClsContext, None, iclassfactory2, byref(com_classfactory))

    obj_ptr = c_ulong(0)

    proto_icf2_base = WINFUNCTYPE(HRESULT,
        c_ulong,
        c_ulong,
        c_char_p,
        c_ulong,
        POINTER(c_ulong),
    )
    IClassFactory2__CreateInstanceLic = proto_icf2_base(7, 'CreateInstanceLic', (
        (1 | 4, 'pUnkOuter'),
        (1 | 4, 'pUnkReserved'),
        (1, 'riid'),
        (1, 'bstrKey'),
        (2, 'ppvObj'),
    ), iclassfactory2)

    req_if = UUID(iid_interface).bytes_le

    key_bstr = ole_aut.SysAllocString(unicode(key))
    try:
        obj = IClassFactory2__CreateInstanceLic(com_classfactory, c_char_p(req_if), key_bstr)
        disp_obj = pythoncom.ObjectFromAddress(obj, pythoncom_iid_interface)
        if pythoncom_wrapdisp:
            return win32com.client.__WrapDispatch(disp_obj)
        return disp_obj
    finally:
        if key_bstr:
            ole_aut.SysFreeString(key_bstr)
        if com_classfactory:
            IUnknown__Release = WINFUNCTYPE(HRESULT)(2, 'Release', (), pythoncom.IID_IUnknown)
            IUnknown__Release(com_classfactory)