code: def test_get_real(self):
      l = np.array([1, 2, 3, 4])
      self.assertListEqual(utils.coerce_real(l).tolist(), l.tolist())
  
      l = np.array([1, 2 + 0.5j, 3, 4])
      self.assertListEqual(
          utils.coerce_real(l, 0.51).tolist(), [1, 2, 3, 4]
      )
  
      with self.assertRaises(AssertionError):
          utils.coerce_real(l, 0.4)
  
imports: from collections.abc import Callable, Sequence
  import copy
  from typing import Any, Optional, TypeVar, Union
  from absl.testing import absltest
  from absl.testing import parameterized
  from lit_nlp.api import types
  from lit_nlp.lib import utils
  import numpy
label_desc: Use image node_id 11 for calling the UtilsTest obj's underlying member method code with example usage: obj.test_get_real() without return types