code: def split_sentences(self, file_name):
      input_file_name, output_file_name = file_name
      print("Opening", input_file_name)
      fin = open(input_file_name, "r", encoding="utf-8")
      fout = open(output_file_name, "w")
  
      encoder = Encoder(self.args)
      pool = multiprocessing.Pool(
          self.workers, initializer=encoder.initializer
      )
      split_docs = pool.imap(encoder.split, fin, 32)
  
      proc_start = time.time()
      total_bytes_processed = 0
      for i, (doc, bytes_processed) in enumerate(split_docs, start=1):
          total_bytes_processed += bytes_processed
          fout.write(doc + "\n")
          self.print_processing_stats(
              i, proc_start, total_bytes_processed
          )
  
      fin.close()
      fout.close()
  
imports: import argparse
  import math
  import json
  import os
  import sys
  import time
  import gzip
  import glob
  import torch
  import numpy
  import multiprocessing
  from megatron.tokenizer import build_tokenizer
  from megatron.core.datasets import indexed_dataset
label_desc: Use image node_id 3 for calling the Partition obj's underlying member method code with example usage: obj.split_sentences(file_name) without return types