code: def setUp(self):
      self.om = DiscreteObservationModel(OBS_PROB)
  
imports: from __future__ import absolute_import, division, print_function
  import sys
  import unittest
  from madmom.ml.hmm import *
label_desc: Use image node_id 1 for calling the TestDiscreteObservationModelClass obj's underlying member method code with example usage: obj.setUp() without return types