old_contents: """
  The :mod:`sklearn.ensemble` module includes ensemble-based methods for
  classification and regression.
  """
  
  from .base import BaseEnsemble
  from .forest import RandomForestClassifier
  from .forest import RandomForestRegressor
  from .forest import RandomTreesEmbedding
  from .forest import ExtraTreesClassifier
  from .forest import ExtraTreesRegressor
  from .gradient_boosting import GradientBoostingClassifier
  from .gradient_boosting import GradientBoostingRegressor
  
  from . import forest
  from . import gradient_boosting
  
new_contents: """
  The :mod:`sklearn.ensemble` module includes ensemble-based methods for
  classification and regression.
  """
  
  from .base import BaseEnsemble
  from .forest import RandomForestClassifier
  from .forest import RandomForestRegressor
  from .forest import RandomTreesEmbedding
  from .forest import ExtraTreesClassifier
  from .forest import ExtraTreesRegressor
  from .gradient_boosting import GradientBoostingClassifier
  from .gradient_boosting import GradientBoostingRegressor
  
  from . import forest
  from . import gradient_boosting
  from . import partial_dependence
  
subject: add partial dependence module