code: def __init__(self, opt, shared=None):
      self.datatype = opt["datatype"]
      opt["datafile"] = os.path.join(
          opt["datapath"],
          "Ubuntu",
          opt["datatype"].split(":")[0] + ".csv",
      )
      super().__init__(opt, shared)
  
      if shared:
          self.data = shared["data"]
      else:
          build(opt)
          fold = opt.get("datatype", "train").split(":")[0]
          self._setup_data(fold)
  
      self.num_exs = sum(len(d) for d in self.data)
  
      # we learn from both sides of every conversation
      self.num_eps = 2 * len(self.data)
      self.reset()
  
imports: from parlai.core.teachers import DialogTeacher, FixedDialogTeacher
  from parlai.utils.io import PathManager
  from .build import build
  import csv
  import random
  import os
label_desc: Use image node_id 1 to create a new MultiturnTeacher object from inherited base classes: FixedDialogTeacher with example: obj = MultiturnTeacher(opt, shared)