code: def _path(opt):
      # build the data if it does not exist
      build(opt["datapath"])
      # set up path to data (specific to each dataset)
      data_path = os.path.join(opt["datapath"], "safety_mix")
      return data_path
  
imports: import json
  import random
  from typing import Optional
  from parlai.core.message import Message
  from parlai.core.opt import Opt
  from parlai.core.params import ParlaiParser
  from parlai.core.teachers import FixedDialogTeacher
  from parlai.tasks.dialogue_safety.agents import StandardTeacher, NOT_OK_CLASS, OK_CLASS
  from parlai.utils.io import PathManager
  from .build import build, FILE_TYPE_EXTENSIONS, TROLL_TYPES
  import os
label_desc: Use image node_id 1 for calling a global function with example usage: _path(opt) and returns: data_path