Authentication hangs with no error message for vision API example

The vision API example here appears to fail during authentication without reporting an error message. Note that GOOGLE_APPLICATION_CREDENTIALS does point to a JSON key (although I don’t claim infallibility on this).

$ python doctext.py receipt.jpg -out_file out.jpg
^CTraceback (most recent call last):
  File "doctext.py", line 88, in <module>
    render_doc_text(args.detect_file, args.out_file)
  File "doctext.py", line 68, in render_doc_text
    bounds = get_document_bounds(filein, FeatureType.PAGE)
  File "doctext.py", line 40, in get_document_bounds
    document = image.detect_full_text()
  File "/home/fenkb/google-vision/lib/python3.4/site-packages/google/cloud/vision/image.py", line 195, in detect_full_text
    annotations = self.detect(features)
  File "/home/fenkb/google-vision/lib/python3.4/site-packages/google/cloud/vision/image.py", line 143, in detect
    return self._detect_annotation(images)
  File "/home/fenkb/google-vision/lib/python3.4/site-packages/google/cloud/vision/image.py", line 117, in _detect_annotation
    return self.client._vision_api.annotate(images)
  File "/home/fenkb/google-vision/lib/python3.4/site-packages/google/cloud/vision/_gax.py", line 69, in annotate
    responses = annotator_client.batch_annotate_images(requests).responses
  File "/home/fenkb/google-vision/lib/python3.4/site-packages/google/cloud/gapic/vision/v1/image_annotator_client.py", line 181, in batch_annotate_images
    return self._batch_annotate_images(request, options)
  File "/home/fenkb/google-vision/lib/python3.4/site-packages/google/gax/api_callable.py", line 419, in inner
    return api_caller(api_call, this_settings, request)
  File "/home/fenkb/google-vision/lib/python3.4/site-packages/google/gax/api_callable.py", line 407, in base_caller
    return api_call(*args)
  File "/home/fenkb/google-vision/lib/python3.4/site-packages/google/gax/api_callable.py", line 368, in inner
    return a_func(*args, **kwargs)
  File "/home/fenkb/google-vision/lib/python3.4/site-packages/google/gax/retry.py", line 120, in inner
    return to_call(*args)
  File "/home/fenkb/google-vision/lib/python3.4/site-packages/google/gax/retry.py", line 68, in inner
    return a_func(*updated_args, **kwargs)
  File "/home/fenkb/google-vision/lib/python3.4/site-packages/grpc/_channel.py", line 506, in __call__
    credentials)
  File "/home/fenkb/google-vision/lib/python3.4/site-packages/grpc/_channel.py", line 500, in _blocking
    _handle_event(completion_queue.poll(), state,
  File "src/python/grpcio/grpc/_cython/_cygrpc/completion_queue.pyx.pxi", line 114, in grpc._cython.cygrpc.CompletionQueue.poll (src/python/grpcio/grpc/_cython/cygrpc.c:10475)
KeyboardInterrupt

Ubuntu
`python` is version `3.4.3`
`google-cloud` is version `0.23.0`
`google-cloud-vision` is version `0.23.3`

[lukesneeringer]

Note that there is now a completely different google-cloud-vision. Is anyone getting this error while using ImageAnnotatorClient?

[lukesneeringer]

Actually, closing this, since it seems unlikely the issue will persist into the new client. Feel free to reopen if I am wrong. 😃