code: def setup_data(self, path):
      print("loading: " + path)
  
      with PathManager.open(path) as data_file:
          self.all_lines = [
              l.strip().split(",", 1)
              for l in data_file.read().split("\n")[1:-1]
          ]
  
          self.labels = [
              self.SST_LABELS[int(x[0])] for x in self.all_lines
          ]
          self.contexts = [x[1] for x in self.all_lines]
  
      new_episode = True
      # define standard question, since it doesn't change for this task
  
      # every episode consists of only one query in this task
      self.question = "Is this sentence positive or negative?"
  
      # define iterator over all queries
  
      for i in range(len(self.contexts)):
          if self.labels[i]:
              yield (
                  self.contexts[i] + "\n" + self.question,
                  [self.labels[i]],
                  None,
                  None,
              ), new_episode
  
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 3 for calling the SSTTeacher obj's underlying member method code with example usage: obj.setup_data(path) without return types