code: def test_reindex_fill_value(self):
      df = DataFrame(np.random.default_rng(2).standard_normal((10, 4)))
  
      # axis=0
      result = df.reindex(list(range(15)))
      assert np.isnan(result.values[-5:]).all()
  
      result = df.reindex(range(15), fill_value=0)
      expected = df.reindex(range(15)).fillna(0)
      tm.assert_frame_equal(result, expected)
  
      # axis=1
      result = df.reindex(columns=range(5), fill_value=0.0)
      expected = df.copy()
      expected[4] = 0.0
      tm.assert_frame_equal(result, expected)
  
      result = df.reindex(columns=range(5), fill_value=0)
      expected = df.copy()
      expected[4] = 0
      tm.assert_frame_equal(result, expected)
  
      result = df.reindex(columns=range(5), fill_value="foo")
      expected = df.copy()
      expected[4] = "foo"
      tm.assert_frame_equal(result, expected)
  
      # other dtypes
      df["foo"] = "foo"
      result = df.reindex(range(15), fill_value="0")
      expected = df.reindex(range(15)).fillna("0")
      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 26 for calling the TestDataFrameSelectReindex obj's underlying member method code with example usage: obj.test_reindex_fill_value() without return types