




import argparse
import shutil
from pathlib import Path

from tqdm import tqdm

from transformers import AutoTokenizer




def 							_UpperCAmelCase  (UpperCamelCase_ : Union[str, Any]      ,    UpperCamelCase_ : Dict      ,    UpperCamelCase_ : Union[str, Any]      ,    UpperCamelCase_ : str=1024       ):
				'''simple docstring'''
				_lowerCAmelCase					,    _lowerCAmelCase    :    Dict										=      [], []

				_lowerCAmelCase    :    int										=      list(zip(UpperCamelCase_      ,    UpperCamelCase_       )       )
				_lowerCAmelCase					,    _lowerCAmelCase    :    Optional[int]										=      sorted_examples[0]

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

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

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




def 							_UpperCAmelCase  (UpperCamelCase_ : List[str]      ,    UpperCamelCase_ : Path      ,    UpperCamelCase_ : Union[str, Any]      ,    UpperCamelCase_ : Optional[Any]       ):
				'''simple docstring'''
				_lowerCAmelCase    :    Optional[Any]										=      Path(UpperCamelCase_       )
				save_path.mkdir(exist_ok=UpperCamelCase_       )
				for split in ["train"]:
								_lowerCAmelCase					,    _lowerCAmelCase    :    Optional[Any]										=      data_dir / F"{split}.source", data_dir / F"{split}.target"
								_lowerCAmelCase    :    int										=      [x.rstrip() for x in Path(UpperCamelCase_       ).open().readlines()]
								_lowerCAmelCase    :    Dict										=      [x.rstrip() for x in Path(UpperCamelCase_       ).open().readlines()]
								_lowerCAmelCase					,    _lowerCAmelCase    :    Dict										=      pack_examples(UpperCamelCase_      ,    UpperCamelCase_      ,    UpperCamelCase_      ,    UpperCamelCase_       )
								print(F"packed {split} split from {len(UpperCamelCase_       )} examples -> {len(UpperCamelCase_       )}."       )
								Path(save_path / F"{split}.source"       ).open("""w"""       ).write("""\n""".join(UpperCamelCase_       )       )
								Path(save_path / F"{split}.target"       ).open("""w"""       ).write("""\n""".join(UpperCamelCase_       )       )
				for split in ["val", "test"]:
								_lowerCAmelCase					,    _lowerCAmelCase    :    int										=      data_dir / F"{split}.source", data_dir / F"{split}.target"
								shutil.copyfile(UpperCamelCase_      ,    save_path / F"{split}.source"       )
								shutil.copyfile(UpperCamelCase_      ,    save_path / F"{split}.target"       )




def 							_UpperCAmelCase  ():
				'''simple docstring'''
				_lowerCAmelCase    :    List[str]										=      argparse.ArgumentParser()
				parser.add_argument("""--tok_name"""      ,    type=UpperCamelCase_      ,    help="""like facebook/bart-large-cnn,t5-base, etc."""       )
				parser.add_argument("""--max_seq_len"""      ,    type=UpperCamelCase_      ,    default=128       )
				parser.add_argument("""--data_dir"""      ,    type=UpperCamelCase_       )
				parser.add_argument("""--save_path"""      ,    type=UpperCamelCase_       )
				_lowerCAmelCase    :    str										=      parser.parse_args()
				_lowerCAmelCase    :    Tuple										=      AutoTokenizer.from_pretrained(args.tok_name       )
				return pack_data_dir(UpperCamelCase_      ,    Path(args.data_dir       )      ,    args.max_seq_len      ,    args.save_path       )


if __name__ == "__main__":
	packer_cli()







def 							_UpperCAmelCase  (UpperCamelCase_ : int       ):
				'''simple docstring'''
				_lowerCAmelCase    :    int										=      n ** (1 / 3)
				return (val * val * val) == n


if __name__ == "__main__":
	print(perfect_cube(2_7))
	print(perfect_cube(4))

