code: def _path(opt):
      # Build the data if it doesn't exist.
      build(opt)
      # for now train, valid and test will be identical, will change with more data.
      dt = opt["datatype"].split(":")[0]
      fpath = get_fpath(opt)
  
      return os.path.join(
          opt["datapath"],
          "light_dialogue_wild",
          fpath,
          opt["light_label_type"] + "_" + dt + ".txt",
      )
  
imports: from typing import Optional
  from parlai.core.params import ParlaiParser
  from parlai.core.opt import Opt
  from parlai.core.teachers import ParlAIDialogTeacher
  from .build import build, get_fpath
  import copy
  import os
  import random
label_desc: Use image node_id 1 for calling a global function with example usage: _path(opt) and returns: os