code: def _mp_fn(index):
      # For xla_spawn (TPUs)
      main()
  
imports: import logging
  import os
  import sys
  from dataclasses import dataclass, field
  from typing import Optional
  import datasets
  import nltk
  import numpy
  from datasets import load_dataset, load_metric
  import transformers
  from filelock import FileLock
  from transformers import AutoConfig, AutoModelForSeq2SeqLM, AutoTokenizer, DataCollatorForSeq2Seq, HfArgumentParser, MBart50Tokenizer, MBart50TokenizerFast, MBartTokenizer, MBartTokenizerFast, Seq2SeqTrainer, Seq2SeqTrainingArguments, set_seed, BartForConditionalGeneration, BartConfig
  from transformers.trainer_utils import get_last_checkpoint
  from transformers.utils import check_min_version, is_offline_mode
  from transformers.utils.versions import require_version
  from ls_bart_model import inject_lightseq_layer, LSBartForConditionalGeneration
label_desc: Use image node_id 2 for calling a global function with example usage: _mp_fn(index) without return types