code: def prob(self, comparison_vectors, return_type=None):
          
          if return_type is not None:
              warnings.warn("The argument 'return_type' is removed. "
                            "Default value is now 'series'.",
                            VisibleDeprecationWarning, stacklevel=2)
  
          logging.info("Classification - compute probabilities")
  
          prob_match = self._prob_match(comparison_vectors.values)
          return pandas.Series(prob_match, index=comparison_vectors.index)
docs: Compute the probabilities for each record pair.
  
          For each pair of records, estimate the probability of being a match.
  
          Parameters
          ----------
          comparison_vectors : pandas.DataFrame
              The dataframe with comparison vectors.
          return_type : str
              Deprecated. (default 'series')
  
          Returns
          -------
          pandas.Series or numpy.ndarray
              The probability of being a match for each record pair.