code: def setup_data(self, path):
      source, target = path
      with PathManager.open(source) as src, PathManager.open(
          target
      ) as tgt:
          for s in src:
              s = _format(s)
              t = _format(tgt.readline())
              yield (s, [t]), True
  
file_path: ParlAI/parlai/tasks/iwslt14/agents.py
imports: from parlai.core.teachers import DialogTeacher
  from parlai.utils.io import PathManager
  from .build import build
  import copy
  import os
label_desc: Use image node_id 2 for calling the DefaultTeacher obj's underlying member method code with example usage: obj.setup_data(path) without return types