code: def partial_transform(self, sequence):
          
          s = super(MultiSequencePreprocessingMixin, self)
          return s.transform(sequence)
docs: Apply preprocessing to single sequence
  
          Parameters
          ----------
          sequence: array like, shape (n_samples, n_features)
              A single sequence to transform
  
          Returns
          -------
          out : array like, shape (n_samples, n_features)