code: def __init__(self, opt, shared=None):
      if shared is None:
          build(opt)
      folder, fold = self._path(opt)
      self.fold = fold
      opt["datafile"] = os.path.join(folder, fold)
      super().__init__(opt, shared)
  
imports: from parlai.core.opt import Opt
  from parlai.core.params import ParlaiParser
  from parlai.core.teachers import DialogTeacher
  from parlai.utils.io import PathManager
  from parlai.utils.data import DatatypeHelper
  from .build import build
  import os
  import pandas
  from typing import Optional
label_desc: Use image node_id 3 to create a new MetalWozTeacherBase object from inherited base classes: DialogTeacher with example: obj = MetalWozTeacherBase(opt, shared)