

'''simple docstring'''




from __future__ import annotations

from collections import deque
from collections.abc import Sequence
from dataclasses import dataclass
from typing import Any






@dataclass
class   _SCREAMING_SNAKE_CASE   :
 __SCREAMING_SNAKE_CASE					:int
 __SCREAMING_SNAKE_CASE					:Node | None      	=					None
 __SCREAMING_SNAKE_CASE					:Node | None      	=					None




def 						UpperCamelCase	(			)				->     Node | None:






     '''simple docstring'''
     __magic_name__						       =    Node(1			)
     __magic_name__						       =    Node(2			)
     __magic_name__						       =    Node(3			)
     __magic_name__						       =    Node(4			)
     __magic_name__						       =    Node(5			)
     return tree




def 						UpperCamelCase	(			a			)				->     list[int]:






     '''simple docstring'''
     return [root.data, *preorder(root.left			), *preorder(root.right			)] if root else []




def 						UpperCamelCase	(			a			)				->     list[int]:






     '''simple docstring'''
     return postorder(root.left			) + postorder(root.right			) + [root.data] if root else []




def 						UpperCamelCase	(			a			)				->     list[int]:






     '''simple docstring'''
     return [*inorder(root.left			), root.data, *inorder(root.right			)] if root else []




def 						UpperCamelCase	(			a			)				->     int:






     '''simple docstring'''
     return (max(height(root.left			)		,						height(root.right			)			) + 1) if root else 0




def 						UpperCamelCase	(			a			)				->     Sequence[Node | None]:






     '''simple docstring'''
     __magic_name__						       =    []

     if root is None:
          return output

     __magic_name__						       =    deque([root]			)

     while process_queue:
          __magic_name__						       =    process_queue.popleft()
          output.append(node.data			)

          if node.left:
               process_queue.append(node.left			)
          if node.right:
               process_queue.append(node.right			)
     return output




def 						UpperCamelCase	(			a		,						a			)				->     Sequence[Node | None]:






     '''simple docstring'''
     __magic_name__						       =    []

     def populate_output(a		,						a			) -> None:
          if not root:
               return
          if level == 1:
               output.append(root.data			)
          elif level > 1:
               populate_output(root.left		,						level - 1			)
               populate_output(root.right		,						level - 1			)

     populate_output(a		,						a			)
     return output




def 						UpperCamelCase	(			a		,						a			)				->     Sequence[Node | None]:






     '''simple docstring'''
     __magic_name__						       =    []

     def populate_output(a		,						a			) -> None:
          if root is None:
               return
          if level == 1:
               output.append(root.data			)
          elif level > 1:
               populate_output(root.right		,						level - 1			)
               populate_output(root.left		,						level - 1			)

     populate_output(a		,						a			)
     return output




def 						UpperCamelCase	(			a			)				->     Sequence[Node | None] | list[Any]:






     '''simple docstring'''
     if root is None:
          return []

     __magic_name__						       =    []

     __magic_name__						       =    0
     __magic_name__						       =    height(a			)

     for h in range(1		,						height_tree + 1			):
          if not flag:
               output.append(get_nodes_from_left_to_right(a		,						a			)			)
               __magic_name__						       =    1
          else:
               output.append(get_nodes_from_right_to_left(a		,						a			)			)
               __magic_name__						       =    0

     return output




def 						UpperCamelCase	(			)				->     None:  # Main function for testing.






     '''simple docstring'''
     __magic_name__						       =    make_tree()
     print(F'''In-order Traversal: {inorder(a			)}'''			)
     print(F'''Pre-order Traversal: {preorder(a			)}'''			)
     print(F'''Post-order Traversal: {postorder(a			)}'''		,						'''\n'''			)

     print(F'''Height of Tree: {height(a			)}'''		,						'''\n'''			)

     print('''Complete Level Order Traversal: '''			)
     print(level_order(a			)		,						'''\n'''			)

     print('''Level-wise order Traversal: '''			)

     for level in range(1		,						height(a			) + 1			):
          print(F'''Level {level}:'''		,						get_nodes_from_left_to_right(a		,						level=a			)			)

     print('''\nZigZag order Traversal: '''			)
     print(zigzag(a			)			)


if __name__ == "__main__":
      import doctest

      doctest.testmod()
      main()









'''simple docstring'''




import argparse
import shutil
from pathlib import Path

from tqdm import tqdm

from transformers import AutoTokenizer




def 						UpperCamelCase	(			a		,						a		,						a		,						a=1024			)				->     Union[str, Any]:






     '''simple docstring'''
     __magic_name__       ,  __magic_name__						       =    [], []

     __magic_name__						       =    list(zip(a		,						a			)			)
     __magic_name__       ,  __magic_name__						       =    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:]			):
          __magic_name__						       =    new_src + ''' ''' + src
          __magic_name__						       =    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			)
               __magic_name__       ,  __magic_name__						       =    src, tgt
          else:  # can fit, keep adding
               __magic_name__       ,  __magic_name__						       =    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 						UpperCamelCase	(			a		,						a		,						a		,						a			)				->     Any:






     '''simple docstring'''
     __magic_name__						       =    Path(a			)
     save_path.mkdir(exist_ok=a			)
     for split in ["train"]:
          __magic_name__       ,  __magic_name__						       =    data_dir / F'''{split}.source''', data_dir / F'''{split}.target'''
          __magic_name__						       =    [x.rstrip() for x in Path(a			).open().readlines()]
          __magic_name__						       =    [x.rstrip() for x in Path(a			).open().readlines()]
          __magic_name__       ,  __magic_name__						       =    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"]:
          __magic_name__       ,  __magic_name__						       =    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 						UpperCamelCase	(			)				->     List[str]:






     '''simple docstring'''
     __magic_name__						       =    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			)
     __magic_name__						       =    parser.parse_args()
     __magic_name__						       =    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()






