code: def test_functional_standard(self):
      actual = acc(self.predictions, self.targets)
      self.assertEqual((), actual.shape)
      np.testing.assert_almost_equal(self.accuracy, actual)
  
imports: from unittest import TestCase, skipIf
  import numpy
  import torch
  from poutyne import Accuracy, BinaryAccuracy, TopKAccuracy, acc, bin_acc, topk
label_desc: Use image node_id 3 for calling the IgnoreIndexAccuracyTest obj's underlying member method code with example usage: obj.test_functional_standard() without return types