code: def load_batch(fpath, label_key="labels"):
      """Internal utility for parsing CIFAR data.
  
      Args:
          fpath: path the file to parse.
          label_key: key for label data in the retrieve
              dictionary.
  
      Returns:
          A tuple `(data, labels)`.
      """
      with open(fpath, "rb") as f:
          d = cPickle.load(f, encoding="bytes")
          # decode utf8
          d_decoded = {}
          for k, v in d.items():
              d_decoded[k.decode("utf8")] = v
          d = d_decoded
      data = d["data"]
      labels = d[label_key]
  
      data = data.reshape(data.shape[0], 3, 32, 32)
      return data, labels
  
label_desc: Use image node_id 1 for calling a global function with example usage: load_batch(fpath, label_key) and returns: data,  labels