code: def __init__(self, blank):
      self.blank = blank
  
imports: from abc import ABC, abstractmethod
  from typing import Dict, List
  import torch
  import torchaudio.functional
  from torch import Tensor
  from torchaudio.functional import TokenSpan
label_desc: Use image node_id 1 to create a new Aligner object from inherited base classes: IAligner with example: obj = Aligner(blank)