




"""simple docstring"""






import argparse
import shutil
from pathlib import Path

from tqdm import tqdm

from transformers import AutoTokenizer





def 				UpperCAmelCase		(		snake_case      :       str   ,							snake_case      :       Tuple   ,							snake_case      :       str   ,							snake_case      :       Optional[int]=1024     ):
					_lowerCAmelCase:str						=	[], []

					_lowerCAmelCase:str						=	list(zip(snake_case   ,							snake_case     )     )
					_lowerCAmelCase:Tuple						=	sorted_examples[0]

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

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

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





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





def 				UpperCAmelCase		(		):
					_lowerCAmelCase:Dict						=	argparse.ArgumentParser()
					parser.add_argument('''--tok_name'''   ,							type=snake_case   ,							help='''like facebook/bart-large-cnn,t5-base, etc.'''     )
					parser.add_argument('''--max_seq_len'''   ,							type=snake_case   ,							default=128     )
					parser.add_argument('''--data_dir'''   ,							type=snake_case     )
					parser.add_argument('''--save_path'''   ,							type=snake_case     )
					_lowerCAmelCase:str						=	parser.parse_args()
					_lowerCAmelCase:Union[str, Any]						=	AutoTokenizer.from_pretrained(args.tok_name     )
					return pack_data_dir(snake_case   ,							Path(args.data_dir     )   ,							args.max_seq_len   ,							args.save_path     )


if __name__ == "__main__":
				packer_cli()













def  __magic_name__  (				lowercase				)				-> list[list]:

							"""simple docstring"""



							lowercase_	:   int  				=     current_set.copy()
							for row_index, row in enumerate(lowercase				):
														lowercase_	:   Tuple  				=     row[0]
														for column_index, column in enumerate(lowercase				):
																					if magnitude == 0:
																												lowercase_	:   Optional[int]  				=     column
																												continue
																					lowercase_	:   List[str]  				=     column / magnitude
    # Subtract to cancel term
							lowercase_	:   List[str]  				=     current_set[0]
							lowercase_	:   Optional[int]  				=     [first_row]
							lowercase_	:   Optional[Any]  				=     current_set[1::]
							for row in current_set:
														lowercase_	:   Union[str, Any]  				=     []
														# If first term is 0, it is already in form we want, so we preserve it
														if row[0] == 0:
																					final_set.append(lowercase				)
																					continue
														for column_index in range(len(lowercase				)				):
																					temp_row.append(first_row[column_index] - row[column_index]				)
														final_set.append(lowercase				)
							# Create next recursion iteration set
							if len(final_set[0]				) != 3:
														lowercase_	:   Tuple  				=     final_set[0]
														lowercase_	:   Dict  				=     []
														lowercase_	:   Any  				=     []
														for row in final_set[1::]:
																					current_first_column.append(row[0]				)
																					next_iteration.append(row[1::]				)
														lowercase_	:   Optional[Any]  				=     simplify(lowercase				)
														for i in range(len(lowercase				)				):
																					resultant[i].insert(0				,       current_first_column[i]				)
														resultant.insert(0				,       lowercase				)
														lowercase_	:   Tuple  				=     resultant
							return final_set





def  __magic_name__  (				lowercase				)				-> list:

							"""simple docstring"""



							if len(lowercase				) == 0:
														raise IndexError("""solve_simultaneous() requires n lists of length n+1"""				)
							lowercase_	:   Tuple  				=     len(lowercase				) + 1
							if any(len(lowercase				) != _length for item in equations				):
														raise IndexError("""solve_simultaneous() requires n lists of length n+1"""				)
							for row in equations:
														if any(not isinstance(lowercase				,       (int, float)				) for column in row				):
																					raise ValueError("""solve_simultaneous() requires lists of integers"""				)
							if len(lowercase				) == 1:
														return [equations[0][-1] / equations[0][0]]
							lowercase_	:   List[str]  				=     equations.copy()
							if any(0 in row for row in data_set				):
														lowercase_	:   int  				=     data_set.copy()
														lowercase_	:   Dict  				=     []
														for row_index, row in enumerate(lowercase				):
																					if 0 not in row:
																												lowercase_	:   Dict  				=     data_set.pop(lowercase				)
																												break
														if not full_row:
																					raise ValueError("""solve_simultaneous() requires at least 1 full equation"""				)
														data_set.insert(0				,       lowercase				)
							lowercase_	:   Tuple  				=     data_set.copy()
							lowercase_	:   List[Any]  				=     simplify(lowercase				)
							lowercase_	:   Dict  				=     simplified[::-1]
							lowercase_	:   list  				=     []
							for row in simplified:
														lowercase_	:   Union[str, Any]  				=     row[-1]
														if not solutions:
																					if row[-2] == 0:
																												solutions.append(0				)
																												continue
																					solutions.append(current_solution / row[-2]				)
																					continue
														lowercase_	:   Any  				=     row.copy()[: len(lowercase				) - 1 :]
														while temp_row[0] == 0:
																					temp_row.pop(0				)
														if len(lowercase				) == 0:
																					solutions.append(0				)
																					continue
														lowercase_	:   Any  				=     temp_row[1::]
														lowercase_	:   Union[str, Any]  				=     temp_row[::-1]
														for column_index, column in enumerate(lowercase				):
																					current_solution -= column * solutions[column_index]
														solutions.append(lowercase				)
							lowercase_	:   Any  				=     []
							for item in solutions:
														final.append(float(round(lowercase				,       5				)				)				)
							return final[::-1]


if __name__ == "__main__":
							import doctest

							doctest.testmod()
							UpperCAmelCase_							=				[
							    [2, 1, 1, 1, 1, 4],
							    [1, 2, 1, 1, 1, 5],
							    [1, 1, 2, 1, 1, 6],
							    [1, 1, 1, 2, 1, 7],
							    [1, 1, 1, 1, 2, 8],
							]
							print(solve_simultaneous(eq))
							print(solve_simultaneous([[4, 2]]))