code: def __init__(self, opt, shared=None):
      super().__init__(opt, shared)
      # Build the data if it doesn't exist.
      build(opt)
      if not shared:
          datapath = self._path(opt)
          self._setup_data(datapath)
      else:
          self.examples = shared["examples"]
      self.id = "qangaroo"
      self.reset()
  
imports: from parlai.core.teachers import FixedDialogTeacher
  from parlai.utils.io import PathManager
  from .build import build
  import json
  import os
label_desc: Use image node_id 1 to create a new DefaultTeacher object from inherited base classes: FixedDialogTeacher with example: obj = DefaultTeacher(opt, shared)