


import argparse
import shutil
from pathlib import Path

from tqdm import tqdm

from transformers import AutoTokenizer






def 							_lowercase    (		SCREAMING_SNAKE_CASE_   :		Dict       ,  SCREAMING_SNAKE_CASE_   :		Optional[Any]       ,  SCREAMING_SNAKE_CASE_   :		Dict       ,  SCREAMING_SNAKE_CASE_   :		List[Any]=1_024	):





			"""simple docstring"""




			UpperCamelCase  ,  UpperCamelCase         =					[], []

			UpperCamelCase         =					list(zip(SCREAMING_SNAKE_CASE_       ,  SCREAMING_SNAKE_CASE_	)	)
			UpperCamelCase  ,  UpperCamelCase         =					sorted_examples[0]

			def is_too_big(SCREAMING_SNAKE_CASE_   :		int	):
						return tok(SCREAMING_SNAKE_CASE_       ,  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(SCREAMING_SNAKE_CASE_	) or is_too_big(SCREAMING_SNAKE_CASE_	):  # cant fit, finalize example
									finished_src.append(SCREAMING_SNAKE_CASE_	)
									finished_tgt.append(SCREAMING_SNAKE_CASE_	)
									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(SCREAMING_SNAKE_CASE_	)
						finished_tgt.append(SCREAMING_SNAKE_CASE_	)
			return finished_src, finished_tgt






def 							_lowercase    (		SCREAMING_SNAKE_CASE_   :		Any       ,  SCREAMING_SNAKE_CASE_   :		Path       ,  SCREAMING_SNAKE_CASE_   :		List[str]       ,  SCREAMING_SNAKE_CASE_   :		Optional[Any]	):





			"""simple docstring"""




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






def 							_lowercase    (		):





			"""simple docstring"""




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


if __name__ == "__main__":
			packer_cli()








import math
import unittest






def 							_lowercase    (		SCREAMING_SNAKE_CASE_   :		int	):





			"""simple docstring"""




			assert isinstance(SCREAMING_SNAKE_CASE_       ,  SCREAMING_SNAKE_CASE_	) and (
			    number >= 0
			), "'number' must been an int and positive"

			if 1 < number < 4:
						# 2 and 3 are primes
						return True
			elif number < 2 or number % 2 == 0 or number % 3 == 0:
						# Negatives, 0, 1, all even numbers, all multiples of 3 are not primes
						return False

			# All primes number are in format of 6k +/- 1
			for i in range(5       ,  int(math.sqrt(SCREAMING_SNAKE_CASE_	) + 1	)       ,  6	):
						if number % i == 0 or number % (i + 2) == 0:
									return False
			return True




class    UpperCAmelCase					(       unittest.TestCase    ):




			def   lowerCamelCase_					(						self							:		Any						):







						"""simple docstring"""







						self.assertTrue(is_prime(2						)						)
						self.assertTrue(is_prime(3						)						)
						self.assertTrue(is_prime(5						)						)
						self.assertTrue(is_prime(7						)						)
						self.assertTrue(is_prime(1_1						)						)
						self.assertTrue(is_prime(1_3						)						)
						self.assertTrue(is_prime(1_7						)						)
						self.assertTrue(is_prime(1_9						)						)
						self.assertTrue(is_prime(2_3						)						)
						self.assertTrue(is_prime(2_9						)						)





			def   lowerCamelCase_					(						self							:		Dict						):







						"""simple docstring"""







						with self.assertRaises(__magic_name__						):
									is_prime(-1_9						)
						self.assertFalse(
						    is_prime(0						)       ,       """Zero doesn't have any positive factors, primes must have exactly two."""       ,       )
						self.assertFalse(
						    is_prime(1						)       ,       """One only has 1 positive factor, primes must have exactly two."""       ,       )
						self.assertFalse(is_prime(2 * 2						)						)
						self.assertFalse(is_prime(2 * 3						)						)
						self.assertFalse(is_prime(3 * 3						)						)
						self.assertFalse(is_prime(3 * 5						)						)
						self.assertFalse(is_prime(3 * 5 * 7						)						)


if __name__ == "__main__":
			unittest.main()




