message: Fix build failure for macos py3
diff: @@ -140,7 +140,7 @@ def main(_):
  # Make predictions, using tfdbg hook.
  predict_results = classifier.predict(test_input_fn, hooks=hooks)
  - print("A prediction result: %s" % predict_results.next())
  + print("A prediction result: %s" % next(predict_results))
  if __name__ == "__main__":
  