code: def test_engineless_lookup(self):
      # GH 16685
      # Standard lookup on RangeIndex should not require the engine to be
      # created
      idx = RangeIndex(2, 10, 3)
  
      assert idx.get_loc(5) == 1
      tm.assert_numpy_array_equal(
          idx.get_indexer([2, 8]), ensure_platform_int(np.array([0, 2]))
      )
      with pytest.raises(KeyError, match="3"):
          idx.get_loc(3)
  
      assert "_engine" not in idx._cache
  
      # Different types of scalars can be excluded immediately, no need to
      #  use the _engine
      with pytest.raises(KeyError, match="'a'"):
          idx.get_loc("a")
  
      assert "_engine" not in idx._cache
  
imports: import numpy
  import pytest
  from pandas.core.dtypes.common import ensure_platform_int
  import pandas
  from pandas import Index, RangeIndex
  import pandas._testing
label_desc: Use image node_id 37 for calling the TestRangeIndex obj's underlying member method code with example usage: obj.test_engineless_lookup() without return types