I could be mistaken but looking at the infinite loop for the watch stream doesn't handle the case when you receive an event that is expired i.e. a HTTP status code of 410.

        while True:
            resp = func(*args, **kwargs)
            try:
                for line in iter_resp_lines(resp):
                    yield self.unmarshal_event(line, return_type)
                    if self._stop:
                        break
            finally:
                kwargs['resource_version'] = self.resource_version
                resp.close()
                resp.release_conn()

Looking at the code it seems that if the event is expired then resp should return something along the lines of

{'raw_object': {u'status': u'Failure', u'kind': u'Status', u'code': 410, u'apiVersion': u'v1', u'reason': u'Gone', u'message': u'too old resource version: 2428 (88826)', u'metadata': {}}, u'object': {'api_version': 'v1',
 'kind': 'Status',

And unmarshall_event should fail to deserialize the object and break. And self.resource_version should just be stuck on the resource_version of the event that was expired.

Am I missing something here?