code: def test_kmodes_epoch_costs(self):
      kmodes = KModes(n_clusters=4, init="Cao", random_state=42)
      kmodes.fit(SOYBEAN)
      self.assertEqual(
          kmodes.epoch_costs_, [206.0, 204.0, 199.0, 199.0]
      )
  
imports: import pickle
  import unittest
  import numpy
  import pandas
  from kmodes.kmodes import KModes
  from kmodes.util.dissim import ng_dissim, jaccard_dissim_binary, jaccard_dissim_label
label_desc: Use image node_id 25 for calling the TestKModes obj's underlying member method code with example usage: obj.test_kmodes_epoch_costs() without return types