code: def test_sort_values_reshaping(self):
      # GH 39426
      values = list(range(21))
      expected = DataFrame([values], columns=values)
      df = expected.sort_values(
          expected.index[0], axis=1, ignore_index=True
      )
  
      tm.assert_frame_equal(df, expected)
  
imports: import numpy
  import pytest
  import pandas
  from pandas import Categorical, DataFrame, NaT, Timestamp, date_range
  import pandas._testing
  from pandas.util.version import Version
label_desc: Use image node_id 21 for calling the TestDataFrameSortValues obj's underlying member method code with example usage: obj.test_sort_values_reshaping() without return types