old_contents: from sklearn.ensemble import RandomForestRegressor as randomforest
  from sklearn.svm import SVR as svm
  from sklearn.pls import PLSRegression as pls
  
  from .neuralnetwork import neuralnetwork
  
  __all__ = ['randomforest', 'svm', 'pls', 'neuralnetwork']
  
new_contents: from sklearn.ensemble import RandomForestRegressor
  from sklearn.svm import SVR
  from sklearn.pls import PLSRegression
  
  from .neuralnetwork import neuralnetwork
  
  __all__ = ['randomforest', 'svm', 'pls', 'neuralnetwork']
  
  class randomforest(RandomForestRegressor):
      pass
  
  class svm(SVR):
      pass
  
  class svm(PLSRegression):
      pass
  
subject: Make models inherit from sklearn