def char2batch(self, char):
     return np.stack(char2vec(
         char, self.characters_positions_in_vocabulary)), np.stack(
             self._zero_batch())
 def char2vec(char, characters_positions_in_vocabulary, speaker_idx,
              speaker_flag_size):
     return np.reshape(char2vec(char, characters_positions_in_vocabulary),
                       (1, 1, -1))