code: def test_indexing_simple(self):
      a = np.array([[1, 2, 3], [4, 5, 6]])
  
      assert isinstance(a[0, 0], np.ndarray)
      assert isinstance(a[0, :], np.ndarray)
      assert a[0, :].tensor._base is a.tensor
  
imports: import itertools
  from unittest import expectedFailure, skipIf
  import numpy
  import pytest
  from pytest import raises
  from torch.testing._internal.common_utils import instantiate_parametrized_tests, parametrize, run_tests, skipIfTorchDynamo, subtest, TEST_WITH_TORCHDYNAMO, TestCase, xpassIfTorchDynamo
label_desc: Use image node_id 1 for calling the TestIndexing obj's underlying member method code with example usage: obj.test_indexing_simple() without return types