code: def __init__(self, opt, shared=None):
      super().__init__(opt, shared)
      opt = copy.deepcopy(opt)
      if not opt.get("fromfile_datapath2"):
          raise RuntimeError("fromfile_datapath2 not specified")
      datafile = opt["fromfile_datapath2"]
      if shared is None:
          self._setup_data(datafile)
      self.id = datafile
      self.reset()
  
imports: from typing import Optional
  from parlai.core.params import ParlaiParser
  from parlai.core.opt import Opt
  import copy
  import os
  import parlai.utils.logging
  from parlai.core.teachers import FbDeprecatedDialogTeacher, ParlAIDialogTeacher
label_desc: Use image node_id 2 to create a new Parlaiformat2Teacher object from inherited base classes: ParlAIDialogTeacher with example: obj = Parlaiformat2Teacher(opt, shared)