code: def test_reindex_with_nans(self):
      df = DataFrame(
          [[1, 2], [3, 4], [np.nan, np.nan], [7, 8], [9, 10]],
          columns=["a", "b"],
          index=[100.0, 101.0, np.nan, 102.0, 103.0],
      )
  
      result = df.reindex(index=[101.0, 102.0, 103.0])
      expected = df.iloc[[1, 3, 4]]
      tm.assert_frame_equal(result, expected)
  
      result = df.reindex(index=[103.0])
      expected = df.iloc[[4]]
      tm.assert_frame_equal(result, expected)
  
      result = df.reindex(index=[101.0])
      expected = df.iloc[[1]]
      tm.assert_frame_equal(result, expected)
  
imports: from datetime import datetime, timedelta
  import inspect
  import numpy
  import pytest
  from pandas._libs.tslibs.timezones import dateutil_gettz
  from pandas.compat import IS64, is_platform_windows
  from pandas.compat.numpy import np_version_gt2
  import pandas
  from pandas import Categorical, CategoricalIndex, DataFrame, Index, MultiIndex, Series, date_range, isna
  import pandas._testing
  from pandas.api.types import CategoricalDtype
label_desc: Use image node_id 39 for calling the TestDataFrameSelectReindex obj's underlying member method code with example usage: obj.test_reindex_with_nans() without return types