Get AGOL Token on ArcMAP

get_token_arcmap.py

def _getTokenArcMap(self):
        token_response = arcpy.GetSigninToken()
        if token_response and 'token' in token_response:
            self._token = token_response['token']
            self._expires_in = token_response['expires']
            self._token_expires_on = datetime.datetime.fromtimestamp(token_response['expires'] / 1000) - \
                                     datetime.timedelta(seconds=1)
            self._referer_url = token_response['referer']
            return self._token
        else:
            return {"error": "?No valid token, please log in ArcMap"}