class_docstr: By default will load teacher with all four tasks.
docstr: Initialize teacher.
docstr_tok: ["Initialize","teacher","."]
code: def __init__(self, opt, shared=None):
      """
      Initialize teacher.
      """
      opt = copy.deepcopy(opt)
      opt["task"] = ",".join(
          "moviedialog:Task:%d" % (i + 1) for i in range(len(tasks))
      )
      super().__init__(opt, shared)
  
file_path: ParlAI/parlai/tasks/moviedialog/agents.py
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 DefaultTeacher object from inherited base classes: MultiTaskTeacher with example: obj = DefaultTeacher(opt, shared)