code: def test_object_comparisons(self, infer_string):
      with option_context("future.infer_string", infer_string):
          ser = Series(["a", "b", np.nan, "c", "a"])
  
          result = ser == "a"
          expected = Series([True, False, False, False, True])
          tm.assert_series_equal(result, expected)
  
          result = ser < "a"
          expected = Series([False, False, False, False, False])
          tm.assert_series_equal(result, expected)
  
          result = ser != "a"
          expected = -(ser == "a")
          tm.assert_series_equal(result, expected)
  
imports: import datetime
  from decimal import Decimal
  import operator
  import numpy
  import pytest
  from pandas._config import using_pyarrow_string_dtype
  import pandas.util._test_decorators
  import pandas
  from pandas import Series, Timestamp, option_context
  import pandas._testing
  from pandas.core import ops
label_desc: Use image node_id 2 for calling the TestObjectComparisons obj's underlying member method code with example usage: obj.test_object_comparisons(infer_string) without return types