code: def is_none(val):
      # Check if a value is None or not, required because `np.array is None` is
      # ambiguous and raise Exception.
      if type(val) is np.array:
          return False
      else:
          return val is None
  
imports: from __future__ import division, print_function, absolute_import
  import six
  import string
  import random
  import numpy
  import tensorflow.compat.v1
  from tensorflow.python import pywrap_tensorflow
  import tflearn.variables
label_desc: Use image node_id 22 for calling a global function with example usage: is_none(val) and returns: False, unknown