code: def join_iters(iters):
      for iter in iters:
          yield from iter
  
imports: import os
  import pathlib
  import re
  import collections
  import functools
  import inspect
  import sys
  from typing import List, Union
  import torch
  from omegaconf import OmegaConf
  import sacrebleu
  from rouge_score import rouge_scorer, scoring
label_desc: Use image node_id 3 for calling a global function with example usage: join_iters(iters) without return types