class_docstr: Regression test for issue #10232:
  
  Exception in loadarff with quoted nominal attributes.
code: def test_data(self):
      age_dtype_instance = np.float64
      smoker_dtype_instance = "<S5"
  
      age_expected = np.array(
          [
              18,
              24,
              44,
              56,
              89,
              11,
          ],
          dtype=age_dtype_instance,
      )
  
      smoker_expected = np.array(
          [
              "no  ",
              "  yes",
              "no  ",
              "no  ",
              "  yes",
              "no  ",
          ],
          dtype=smoker_dtype_instance,
      )
  
      assert_array_equal(self.data["age"], age_expected)
      assert_array_equal(self.data["smoker"], smoker_expected)
  
imports: import datetime
  import os
  import sys
  from os.path import join
  from io import StringIO
  import numpy
  from numpy.testing import assert_array_almost_equal, assert_array_equal, assert_equal, assert_
  from pytest import raises
  from scipy.io.arff import loadarff
  from scipy.io.arff._arffread import read_header, ParseArffError
label_desc: Use image node_id 3 for calling the TestQuotedNominalSpaces obj's underlying member method code with example usage: obj.test_data() without return types