message: Make check_load_py_test.py work with Python 3
diff: @@ -52,6 +52,7 @@ def main():
  '//tensorflow/contrib/tensorboard/...)']).strip()
  except subprocess.CalledProcessError as e:
  targets = e.output
  + targets = targets.decode("utf-8") if isinstance(targets, bytes) else targets
  # Only keep py_test targets, and filter out targets with 'no_pip' tag.
  valid_targets = []
  