code: def _assert_arrays_equal(self, expected, actual):
      self.assertEqual(expected.shape, actual.shape)
      self.assertTrue((actual == expected).all())
  
imports: import logging
  import unittest
  import numpy
  from gensim import utils
  from gensim.test.utils import datapath, get_tmpfile
label_desc: Use image node_id 1 for calling the TestWindowing obj's underlying member method code with example usage: obj._assert_arrays_equal(expected, actual) without return types