def __init__(self, worker=None, *args, **kwargs):
        warnings.warn('AsyncClient is deprecated. Use the threaded+http transport instead.', DeprecationWarning)
        self.worker = worker and AsyncWorker()
        super(AsyncClient, self).__init__(*args, **kwargs)
dataset/ETHPy150Open getsentry/raven-python/raven/contrib/async.py/AsyncClient.__init__/operator `or` -> `and`