import argparse
import shutil
from pathlib import Path

from tqdm import tqdm

from transformers import AutoTokenizer




def        lowerCAmelCase_			(					__A,  __A,  __A,  __A=1_024							)					->    Optional[int]:







      '''simple docstring'''


      UpperCAmelCase__		,				UpperCAmelCase__								=  [], []

      UpperCAmelCase__								=  list(zip(__A,  __A							)							)
      UpperCAmelCase__		,				UpperCAmelCase__								=  sorted_examples[0]

      def is_too_big(__A							):
            return tok(__A,  return_tensors="pt"							).input_ids.shape[1] > max_tokens

      for src, tgt in tqdm(sorted_examples[1:]							):
            UpperCAmelCase__								=  new_src + " " + src
            UpperCAmelCase__								=  new_tgt + " " + tgt
            if is_too_big(__A							) or is_too_big(__A							):  # cant fit, finalize example
                  finished_src.append(__A							)
                  finished_tgt.append(__A							)
                  UpperCAmelCase__		,				UpperCAmelCase__								=  src, tgt
            else:  # can fit, keep adding
                  UpperCAmelCase__		,				UpperCAmelCase__								=  cand_src, cand_tgt

    # cleanup
      if new_src:
            assert new_tgt
            finished_src.append(__A							)
            finished_tgt.append(__A							)
      return finished_src, finished_tgt




def        lowerCAmelCase_			(					__A,  __A,  __A,  __A							)					->    Dict:







      '''simple docstring'''


      UpperCAmelCase__								=  Path(__A							)
      save_path.mkdir(exist_ok=__A							)
      for split in ["train"]:
            UpperCAmelCase__		,				UpperCAmelCase__								=  data_dir / f"""{split}.source""", data_dir / f"""{split}.target"""
            UpperCAmelCase__								=  [x.rstrip() for x in Path(__A							).open().readlines()]
            UpperCAmelCase__								=  [x.rstrip() for x in Path(__A							).open().readlines()]
            UpperCAmelCase__		,				UpperCAmelCase__								=  pack_examples(__A,  __A,  __A,  __A							)
            print(f"""packed {split} split from {len(__A							)} examples -> {len(__A							)}."""							)
            Path(save_path / f"""{split}.source"""							).open("w"							).write("\n".join(__A							)							)
            Path(save_path / f"""{split}.target"""							).open("w"							).write("\n".join(__A							)							)
      for split in ["val", "test"]:
            UpperCAmelCase__		,				UpperCAmelCase__								=  data_dir / f"""{split}.source""", data_dir / f"""{split}.target"""
            shutil.copyfile(__A,  save_path / f"""{split}.source"""							)
            shutil.copyfile(__A,  save_path / f"""{split}.target"""							)




def        lowerCAmelCase_			(					)					->    str:







      '''simple docstring'''


      UpperCAmelCase__								=  argparse.ArgumentParser()
      parser.add_argument("--tok_name",  type=__A,  help="like facebook/bart-large-cnn,t5-base, etc."							)
      parser.add_argument("--max_seq_len",  type=__A,  default=128							)
      parser.add_argument("--data_dir",  type=__A							)
      parser.add_argument("--save_path",  type=__A							)
      UpperCAmelCase__								=  parser.parse_args()
      UpperCAmelCase__								=  AutoTokenizer.from_pretrained(args.tok_name							)
      return pack_data_dir(__A,  Path(args.data_dir							),  args.max_seq_len,  args.save_path							)


if __name__ == "__main__":
      packer_cli()




from __future__ import annotations




def        lowerCAmelCase_			(					__A,  __A,  __A,  )					->    tuple:







      '''simple docstring'''


      if (electron_conc, hole_conc, intrinsic_conc).count(0							) != 1:
            raise ValueError("You cannot supply more or less than 2 values"							)
      elif electron_conc < 0:
            raise ValueError("Electron concentration cannot be negative in a semiconductor"							)
      elif hole_conc < 0:
            raise ValueError("Hole concentration cannot be negative in a semiconductor"							)
      elif intrinsic_conc < 0:
            raise ValueError(
                "Intrinsic concentration cannot be negative in a semiconductor"							)
      elif electron_conc == 0:
            return (
                "electron_conc",
                intrinsic_conc**2 / hole_conc,
            )
      elif hole_conc == 0:
            return (
                "hole_conc",
                intrinsic_conc**2 / electron_conc,
            )
      elif intrinsic_conc == 0:
            return (
                "intrinsic_conc",
                (electron_conc * hole_conc) ** 0.5,
            )
      else:
            return (-1, -1)


if __name__ == "__main__":
      import doctest

      doctest.testmod()



