code: def __init__(self, opt, shared=None):
      # store datatype
      self.dt = opt["datatype"].split(":")[0]
  
      # store identifier for the teacher in the dialog
      self.id = "sst"
  
      self.SST_LABELS = ["negative", "positive"]
  
      opt["datafile"] = self._path(opt)
  
      super().__init__(opt, shared)
  
file_path: ParlAI/parlai/tasks/sst/agents.py
imports: from parlai.core.teachers import DialogTeacher
  from parlai.utils.io import PathManager
  from .build import build
  import os
label_desc: Use image node_id 1 to create a new SSTTeacher object from inherited base classes: DialogTeacher with example: obj = SSTTeacher(opt, shared)