code: def __str__(self):
      return "\n".join(self._render())
  
imports: import collections
  import enum
  import itertools
  from typing import DefaultDict, List, Optional, Tuple
  from torch.utils.benchmark.utils import common
  from torch import tensor
label_desc: Use image node_id 2 for calling the Compare obj's underlying member method code with example usage: obj.__str__() and returns: str