code: def is_special_none_tensor(tensor):
      """Checks if a tensor is a special None Tensor."""
      return tensor.shape.ndims == 0 and tensor.dtype == tf.int32
  
file_path: autodist/examples/benchmark/utils/tf_utils.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import six
  import tensorflow
  from utils import activations
label_desc: Use image node_id 3 for calling a global function with example usage: is_special_none_tensor(tensor) and returns: unknown