message: Update data_flow_ops.py
  Adresses
diff: @@ -474,7 +474,7 @@ class QueueBase(object):
  name: A name for the operation (optional).
  Returns:
  - The tuple of concatenated tensors that was dequeued.
  + The list of concatenated tensors that was dequeued.
  """
  if name is None:
  name = "%s_DequeueMany" % self._name
  