code: def stash_split(fqdn, result, *argl, **argd):
      
      global _splits
      if fqdn == "sklearn.cross_validation.train_test_split":
          key = id(result[1])
          _splits[key] = result
  
      #We don't actually want to return anything for the analysis; we are using it
      #as a hook to save pointers to the dataset split so that we can easily
      #analyze performance later on.
      return None
docs: Stashes the split between training and testing sets so that it can be
      used later for automatic scoring of the models in the log.