old_contents: from .BayesianModel import *
  from .NoisyOrModel import *
  from .MarkovModel import *
  from .FactorGraph import *
  from .ClusterGraph import *
  from .JunctionTree import *
  
  __all__ = ['BayesianModel',
             'NoisyOrModel',
             'MarkovModel',
             'FactorGraph',
             'JunctionTree',
             'ClusterGraph']
  
new_contents: from .BayesianModel import *
  from .NoisyOrModel import *
  from .MarkovModel import *
  from .FactorGraph import *
  from .ClusterGraph import *
  from .JunctionTree import *
  from .DynamicBayesianNetwork import *
  
  __all__ = ['BayesianModel',
             'NoisyOrModel',
             'MarkovModel',
             'FactorGraph',
             'JunctionTree',
             'ClusterGraph',
             'DynamicBayesianNetwork']
  
subject: update __init__.py