code: def _array_equal(a, b):
      """Really tests if arrays are equal, where nan == nan == True"""
      try:
          return np.allclose(a, b, 0, 0, equal_nan=True)
      except (TypeError, ValueError):
          return False
  
imports: from traitlets import TraitError, TraitType
  import numpy
  import pandas
  import warnings
  import datetime
  import six
label_desc: Use image node_id 14 for calling a global function with example usage: _array_equal(a, b) and returns: np, False