code: def test_isin_float_in_int_series(self, values):
      # GH#19356 GH#21804
      ser = Series(values)
      result = ser.isin([-9, -0.5])
      expected = Series([True, False])
      tm.assert_series_equal(result, expected)
  
imports: import numpy
  import pytest
  import pandas
  from pandas import Series, date_range
  import pandas._testing
  from pandas.core import algorithms
  from pandas.core.arrays import PeriodArray
label_desc: Use image node_id 11 for calling the TestSeriesIsIn obj's underlying member method code with example usage: obj.test_isin_float_in_int_series(values) without return types