code: def test_ordinal_classifier_shape_checked(self):
      p = pd.Series([0, 0, 1, 1])
      q = pd.DataFrame([0.5, 0.5, 0.5, 0.5])
      with self.assertRaises(ValueError):
          ot_distance(p, q, mode="ordinal")
  
imports: import numpy
  import pandas
  from aif360.metrics.ot_metric import _normalize, _transform, _evaluate
  from aif360.sklearn.metrics import ot_distance
  from ot import emd2
  import unittest
  from unittest import TestCase
label_desc: Use image node_id 9 for calling the TestOtBiasScan obj's underlying member method code with example usage: obj.test_ordinal_classifier_shape_checked() without return types