publisher_client = 
topic = 'projects/python-docs-samples-tests/topics/subscription-test-topic-3.7-6de8422ca9fd4a8582af72286c76b407'
dead_letter_topic = 'projects/python-docs-samples-tests/topics/subscription-test-dead-letter-topic-3.7-6de8422ca9fd4a8582af72286c76b407'
subscription_dlq = 'projects/python-docs-samples-tests/subscriptions/subscription-test-subscription-dlq-3.7-6de8422ca9fd4a8582af72286c76b407'
capsys = <_pytest.capture.CaptureFixture object at 0x7f7ccf021f90>
def test_receive_with_delivery_attempts(
    publisher_client, topic, dead_letter_topic, subscription_dlq, capsys
):
    _publish_messages(publisher_client, topic)


  subscriber.receive_messages_with_delivery_attempts(PROJECT_ID, SUBSCRIPTION_DLQ, 90)


subscriber_test.py:236:

subscriber.py:654: in receive_messages_with_delivery_attempts

streaming_pull_future.result(timeout=timeout)

self = <google.cloud.pubsub_v1.subscriber.futures.StreamingPullFuture object at 0x7f7ccf019cd0>

timeout = 90
def result(self, timeout=None):
    """Resolve the future and return a value where appropriate.

    Args:
        timeout (Union[int, float]): The number of seconds before this call
            times out and raises TimeoutError.

    Raises:
        concurrent.futures.TimeoutError: If the request times out.
        Exception: For undefined exceptions in the underlying
            call execution.
    """
    # Attempt to get the exception if there is one.
    # If there is not one, then we know everything worked, and we can
    # return an appropriate value.
    err = self.exception(timeout=timeout)
    if err is None:
        return self._result


  raise err


E       google.api_core.exceptions.NotFound: 404 Resource not found (resource=projects/python-docs-samples-tests/subscriptions/subscription-test-subscription-dlq-3.7-6de8422ca9fd4a8582af72286c76b407).
../../google/cloud/pubsub_v1/futures.py:105: NotFound