message: tf_contextlib forgotten oops
diff: @@ -411,7 +411,7 @@ class Context(object):
  self._initialize_handle_and_devices()
  pywrap_tensorflow.TFE_ContextEnableRunMetadata(self._context_handle)
  - @contextlib.contextmanager
  + @tf_contextlib.contextmanager
  def device_policy(self, policy):
  if not self._context_handle:
  self._initialize_handle_and_devices()
  