code: def __init__(self, opt, shared=None):
      build(opt)
      opt["datafile"] = os.path.join(
          opt["datapath"],
          "personalized-dialog",
          "personalized-dialog-dataset",
          "personalized-dialog-kb-all.txt",
      )
      super().__init__(opt, shared)
  
imports: from parlai.core.teachers import FbDeprecatedDialogTeacher, MultiTaskTeacher
  from .build import build
  import copy
  import os
label_desc: Use image node_id 1 to create a new KBTeacher object from inherited base classes: FbDeprecatedDialogTeacher with example: obj = KBTeacher(opt, shared)