






import argparse
import shutil
from pathlib import Path

from tqdm import tqdm

from transformers import AutoTokenizer


def 				snake_case__							(							UpperCAmelCase							:  Optional[Any]    ,			UpperCAmelCase							:  Tuple    ,			UpperCAmelCase							:  Union[str, Any]    ,			UpperCAmelCase							:  int=1_0_2_4       ):
				lowerCAmelCase__   :List[Any]      							=				[], []

				lowerCAmelCase__   :List[str]      							=				list(zip(UpperCAmelCase    ,			UpperCAmelCase       )       )
				lowerCAmelCase__   :str      							=				sorted_examples[0]

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

				for src, tgt in tqdm(sorted_examples[1:]       ):
								lowerCAmelCase__   :Tuple      							=				new_src + " " + src
								lowerCAmelCase__   :Tuple      							=				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__   :Optional[int]      							=				src, tgt
								else:  # can fit, keep adding
												lowerCAmelCase__   :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 				snake_case__							(							UpperCAmelCase							:  int    ,			UpperCAmelCase							:  Path    ,			UpperCAmelCase							:  Optional[int]    ,			UpperCAmelCase							:  Any       ):
				lowerCAmelCase__   :List[Any]      							=				Path(UpperCAmelCase       )
				save_path.mkdir(exist_ok=UpperCAmelCase       )
				for split in ["train"]:
								lowerCAmelCase__   :int      							=				data_dir / F'''{split}.source''', data_dir / F'''{split}.target'''
								lowerCAmelCase__   :int      							=				[x.rstrip() for x in Path(UpperCAmelCase       ).open().readlines()]
								lowerCAmelCase__   :Optional[Any]      							=				[x.rstrip() for x in Path(UpperCAmelCase       ).open().readlines()]
								lowerCAmelCase__   :List[Any]      							=				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__   :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 				snake_case__							(							):
				lowerCAmelCase__   :Optional[Any]      							=				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=1_2_8       )
				parser.add_argument("--data_dir"    ,			type=UpperCAmelCase       )
				parser.add_argument("--save_path"    ,			type=UpperCAmelCase       )
				lowerCAmelCase__   :List[str]      							=				parser.parse_args()
				lowerCAmelCase__   :int      							=				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()











from collections.abc import Callable
from math import pi, sqrt
from random import uniform
from statistics import mean


def 				snake_case__							(							UpperCAmelCase							:  int       ):

    # A local function to see if a dot lands in the circle.
    def is_in_circle(UpperCAmelCase							:  float    ,			UpperCAmelCase							:  float       ) -> bool:
        lowerCAmelCase__   :Optional[int]      							=				sqrt((x**2) + (y**2)       )
        # Our circle has a radius of 1, so a distance
        # greater than 1 would land outside the circle.
        return distance_from_centre <= 1

    # The proportion of guesses that landed in the circle
    lowerCAmelCase__   :Union[str, Any]      							=				mean(
        int(is_in_circle(uniform(-1.0    ,			1.0       )    ,			uniform(-1.0    ,			1.0       )       )       )
        for _ in range(UpperCAmelCase       )       )
    # The ratio of the area for circle to square is pi/4.
    lowerCAmelCase__   :List[Any]      							=				proportion * 4
    print(F'''The estimated value of pi is {pi_estimate}'''       )
    print(F'''The numpy value of pi is {pi}'''       )
    print(F'''The total error is {abs(pi - pi_estimate       )}'''       )


def 				snake_case__							(							UpperCAmelCase							:  int    ,			UpperCAmelCase							:  Callable[[float], float]    ,			UpperCAmelCase							:  float = 0.0    ,			UpperCAmelCase							:  float = 1.0    ,			):
    return mean(
        function_to_integrate(uniform(UpperCAmelCase    ,			UpperCAmelCase       )       ) for _ in range(UpperCAmelCase       )       ) * (max_value - min_value)


def 				snake_case__							(							UpperCAmelCase							:  int    ,			UpperCAmelCase							:  float = 0.0    ,			UpperCAmelCase							:  float = 1.0       ):

    def identity_function(UpperCAmelCase							:  float       ) -> float:
        return x

    lowerCAmelCase__   :List[str]      							=				area_under_curve_estimator(
        UpperCAmelCase    ,			UpperCAmelCase    ,			UpperCAmelCase    ,			UpperCAmelCase       )
    lowerCAmelCase__   :Tuple      							=				(max_value * max_value - min_value * min_value) / 2

    print("******************"       )
    print(F'''Estimating area under y=x where x varies from {min_value} to {max_value}'''       )
    print(F'''Estimated value is {estimated_value}'''       )
    print(F'''Expected value is {expected_value}'''       )
    print(F'''Total error is {abs(estimated_value - expected_value       )}'''       )
    print("******************"       )


def 				snake_case__							(							UpperCAmelCase							:  int       ):

    def function_to_integrate(UpperCAmelCase							:  float       ) -> float:
        return sqrt(4.0 - x * x       )

    lowerCAmelCase__   :int      							=				area_under_curve_estimator(
        UpperCAmelCase    ,			UpperCAmelCase    ,			0.0    ,			2.0       )

    print("******************"       )
    print("Estimating pi using area_under_curve_estimator"       )
    print(F'''Estimated value is {estimated_value}'''       )
    print(F'''Expected value is {pi}'''       )
    print(F'''Total error is {abs(estimated_value - pi       )}'''       )
    print("******************"       )


if __name__ == "__main__":
 import doctest

 doctest.testmod()



