code: def split_file(ori_file):
      src_file = ori_file + ".src"
      tgt_file = ori_file + ".tgt"
      with open(ori_file, "r", encoding="utf8") as f:
          lines = f.readlines()
      src, tgt = zip(*[sent.split("\t") for sent in lines])
      with open(src_file, "w", encoding="utf8") as f:
          for src_sent in src:
              f.write(src_sent + "\n")
      with open(tgt_file, "w", encoding="utf8") as f:
          for tgt_sent in tgt:
              f.write(tgt_sent)
      os.remove(ori_file)
  
imports: import os
  import sys
  from absl import logging
  from delta.data.utils.test_utils import mock_a_text_file
label_desc: Use image node_id 2 for calling a global function with example usage: split_file(ori_file) without return types