code: def __init__(self, opt, shared=None):
      opt = copy.deepcopy(opt)
      try:
          cands = opt["task"].split(":")[2]
          use_cands = False if cands == "no_cands" else True
      except Exception:
          use_cands = True
      opt["datafile"] = _path(opt, "both_original", use_cands)
      super().__init__(opt, shared)
  
imports: from parlai.core.teachers import FbDeprecatedDialogTeacher, YamlTeacher
  from parlai.utils.data import DatatypeHelper
  from parlai.utils.misc import warn_once
  from .build import build
  from parlai.utils.strings import normalize_reply
  import parlai.utils.logging
  from parlai.core.params import ParlaiParser
  from typing import Optional
  from parlai.core.opt import Opt
  import copy
  import os
label_desc: Use image node_id 1 to create a new BothTeacher object from inherited base classes: FbDeprecatedDialogTeacher with example: obj = BothTeacher(opt, shared)