code: def main():
      parser = argparse.ArgumentParser()
      parser.add_argument(
          "--folder", type=str, required=True, help="the data folder "
      )
      parser.add_argument(
          "--split",
          type=str,
          default="test",
          help="split (valid, test) to check against training data",
      )
      parser.add_argument(
          "--directions", type=str, default=None, required=False
      )
  
      args = parser.parse_args()
  
      if args.directions is None:
          directions = set(get_directions(args.folder))
          directions = sorted(directions)
      else:
          directions = args.directions.split(",")
      directions = sorted(set(directions))
  
      results = []
      print(f"checking where {args.split} split data are in training")
      print(
          f"direction\tcommon_count\tsrc common\ttgt common\tfrom_size\tto_size"
      )
  
      for direction in directions:
          src, tgt = direction.split("-")
          from_src_file = (
              f"{args.folder}/{args.split}.{src}-{tgt}.{src}"
          )
          from_tgt_file = (
              f"{args.folder}/{args.split}.{src}-{tgt}.{tgt}"
          )
          if not os.path.exists(from_src_file):
              # some test/valid data might in reverse directinos:
              from_src_file = (
                  f"{args.folder}/{args.split}.{tgt}-{src}.{src}"
              )
              from_tgt_file = (
                  f"{args.folder}/{args.split}.{tgt}-{src}.{tgt}"
              )
          to_src_file = f"{args.folder}/train.{src}-{tgt}.{src}"
          to_tgt_file = f"{args.folder}/train.{src}-{tgt}.{tgt}"
          if not os.path.exists(to_src_file) or not os.path.exists(
              from_src_file
          ):
              continue
          r = check_diff(
              from_src_file, from_tgt_file, to_src_file, to_tgt_file
          )
          results.append(r)
          print(f"{direction}\t", "\t".join(map(str, r)))
  
file_path: fairseq/examples/multilingual/data_scripts/check_self_overlaps.py
imports: import os
  import glob
  import argparse
  from utils.dedup import deup
  import sys
label_desc: Use image node_id 4 for calling a global function with example usage: main() without return types