

"""simple docstring"""




import multiprocessing
import os
from typing import BinaryIO, Optional, Union

from .. import Dataset, Features, NamedSplit, config
from ..formatting import query_table
from ..packaged_modules.csv.csv import Csv
from ..utils import logging
from ..utils.typing import NestedDataStructureLike, PathLike
from .abc import AbstractDatasetReader

class    a__  (   lowerCAmelCase__     ):
			"""simple docstring"""







			def __init__(      self , lowercase , lowercase = None , lowercase = None , lowercase = None , lowercase = False , lowercase = False , lowercase = None , **lowercase , )					->  Any:
							'''simple docstring'''






							super().__init__(
							    UpperCamelCase__ , split=UpperCamelCase__ , features=UpperCamelCase__ , cache_dir=UpperCamelCase__ , keep_in_memory=UpperCamelCase__ , streaming=UpperCamelCase__ , num_proc=UpperCamelCase__ , **UpperCamelCase__ , )
							A__            =     path_or_paths if isinstance(UpperCamelCase__ , UpperCamelCase__    ) else {self.split: path_or_paths}
							A__            =     Csv(
							    cache_dir=UpperCamelCase__ , data_files=UpperCamelCase__ , features=UpperCamelCase__ , **UpperCamelCase__ , )


			def        UpperCamelCase						(      self    )					->  Any:
							'''simple docstring'''






							if self.streaming:
											A__            =     self.builder.as_streaming_dataset(split=self.split    )
							# Build regular (map-style) dataset
							else:
											A__            =     None
											A__            =     None
											A__            =     None
											A__            =     None

											self.builder.download_and_prepare(
											    download_config=UpperCamelCase__ , download_mode=UpperCamelCase__ , verification_mode=UpperCamelCase__ , base_path=UpperCamelCase__ , num_proc=self.num_proc , )
											A__            =     self.builder.as_dataset(
											    split=self.split , verification_mode=UpperCamelCase__ , in_memory=self.keep_in_memory    )
							return dataset

class    a__  :
			"""simple docstring"""







			def __init__(      self , lowercase , lowercase , lowercase = None , lowercase = None , **lowercase , )					->  Union[str, Any]:
							'''simple docstring'''






							if num_proc is not None and num_proc <= 0:
											raise ValueError(F'num_proc {num_proc} must be an integer > 0.'    )

							A__            =     dataset
							A__            =     path_or_buf
							A__            =     batch_size if batch_size else config.DEFAULT_MAX_BATCH_SIZE
							A__            =     num_proc
							A__            =     "utf-8"
							A__            =     to_csv_kwargs


			def        UpperCamelCase						(      self    )					->  int:
							'''simple docstring'''






							A__            =     self.to_csv_kwargs.pop("path_or_buf" , UpperCamelCase__    )
							A__            =     self.to_csv_kwargs.pop("header" , UpperCamelCase__    )
							A__            =     self.to_csv_kwargs.pop("index" , UpperCamelCase__    )

							if isinstance(self.path_or_buf , (str, bytes, os.PathLike)    ):
											with open(self.path_or_buf , "wb+"    ) as buffer:
															A__            =     self._write(file_obj=UpperCamelCase__ , header=UpperCamelCase__ , index=UpperCamelCase__ , **self.to_csv_kwargs    )
							else:
											A__            =     self._write(file_obj=self.path_or_buf , header=UpperCamelCase__ , index=UpperCamelCase__ , **self.to_csv_kwargs    )
							return written


			def        UpperCamelCase						(      self , lowercase    )					->  Optional[Any]:
							'''simple docstring'''






							A__            =     args

							A__            =     query_table(
							    table=self.dataset.data , key=slice(UpperCamelCase__ , offset + self.batch_size    ) , indices=self.dataset._indices , )
							A__            =     batch.to_pandas().to_csv(
							    path_or_buf=UpperCamelCase__ , header=header if (offset == 0) else False , index=UpperCamelCase__ , **UpperCamelCase__    )
							return csv_str.encode(self.encoding    )


			def        UpperCamelCase						(      self , lowercase , lowercase , lowercase , **lowercase    )					->  int:
							'''simple docstring'''






							A__            =     0

							if self.num_proc is None or self.num_proc == 1:
											for offset in logging.tqdm(
											    range(0 , len(self.dataset    ) , self.batch_size    ) , unit="ba" , disable=not logging.is_progress_bar_enabled() , desc="Creating CSV from Arrow format" , ):
															A__            =     self._batch_csv((offset, header, index, to_csv_kwargs)    )
															written += file_obj.write(UpperCamelCase__    )

							else:
											A__            =     len(self.dataset    ), self.batch_size
											with multiprocessing.Pool(self.num_proc    ) as pool:
															for csv_str in logging.tqdm(
															    pool.imap(
															        self._batch_csv , [(offset, header, index, to_csv_kwargs) for offset in range(0 , UpperCamelCase__ , UpperCamelCase__    )] , ) , total=(num_rows // batch_size) + 1 if num_rows % batch_size else num_rows // batch_size , unit="ba" , disable=not logging.is_progress_bar_enabled() , desc="Creating CSV from Arrow format" , ):
																			written += file_obj.write(UpperCamelCase__    )

							return written




from .balanced_parentheses import balanced_parentheses
from .stack import Stack



def    lowerCAmelCase__							(		SCREAMING_SNAKE_CASE_:							str )     -> int:




				'''simple docstring'''





				return {"+": 1, "-": 1, "*": 2, "/": 2, "^": 3}.get(SCREAMING_SNAKE_CASE_		,    -1 )



def    lowerCAmelCase__							(		SCREAMING_SNAKE_CASE_:							str )     -> str:




				'''simple docstring'''





				if not balanced_parentheses(SCREAMING_SNAKE_CASE_ ):
								raise ValueError("Mismatched parentheses" )
				A__            =     Stack()
				A__            =     []
				for char in expression_str:
								if char.isalpha() or char.isdigit():
												postfix.append(SCREAMING_SNAKE_CASE_ )
								elif char == "(":
												stack.push(SCREAMING_SNAKE_CASE_ )
								elif char == ")":
												while not stack.is_empty() and stack.peek() != "(":
																postfix.append(stack.pop() )
												stack.pop()
								else:
												while not stack.is_empty() and precedence(SCREAMING_SNAKE_CASE_ ) <= precedence(stack.peek() ):
																postfix.append(stack.pop() )
												stack.push(SCREAMING_SNAKE_CASE_ )
				while not stack.is_empty():
								postfix.append(stack.pop() )
				return " ".join(SCREAMING_SNAKE_CASE_ )


if __name__ == "__main__":
	from doctest import testmod

	testmod()
	lowerCAmelCase__						=	"""a+b*(c^d-e)^(f+g*h)-i"""

	print("""Infix to Postfix Notation demonstration:\n""")
	print("""Infix notation: """ + expression)
	print("""Postfix notation: """ + infix_to_postfix(expression))

