old_contents: from neuroimaging.algorithms.statistics import Model
  
  class Classifier(Model):
      def learn(self, **keywords): self.fit(**keywords)
  
  
new_contents: from scipy.sandbox.models.model import Model
  
  class Classifier(Model):
      def learn(self, **keywords):
          self.fit(**keywords)
  
  
subject: use the Model from scipy