code: def test_timedelta_getitem_na():
      s = cudf.Series([1, 2, None, 3], dtype="timedelta64[ns]")
      assert s[2] is cudf.NaT
  
imports: import datetime
  import operator
  import cupy
  import numpy
  import pandas
  import pytest
  import cudf
  from cudf.testing import _utils
  from cudf.testing._utils import assert_eq, assert_exceptions_equal
label_desc: Use image node_id 35 for calling a global function with example usage: test_timedelta_getitem_na() without return types