code: 
  
  
  
  
  
  import itertools
  from dataclasses import dataclass
  from typing import Optional
  
  import pyarrow as pa
  
  import datasets
  from datasets.table import table_cast
  
  
  __lowerCAmelCase     =			datasets.utils.logging.get_logger(__name__)
  
  
  
  
  @dataclass
  class   _UpperCAmelCase	(   datasets.BuilderConfig					):
  					__A          =   None
  
  
  
  
  class   _UpperCAmelCase	(   datasets.ArrowBasedBuilder					):
  					__A          =   ArrowConfig
  
  
  
  
  					def 	snake_case_		(						self       )						->  Union[str, Any]:
  							return datasets.DatasetInfo(features=self.config.features       )
  
  
  
  
  					def 	snake_case_		(						self    ,      __lowerCAmelCase       )						->  Dict:
  							if not self.config.data_files:
  									raise ValueError(F"""At least one data file must be specified, but got data_files={self.config.data_files}"""       )
  							UpperCamelCase__         =	dl_manager.download_and_extract(self.config.data_files       )
  							if isinstance(__lowerCAmelCase    ,      (str, list, tuple)       ):
  									UpperCamelCase__         =	data_files
  									if isinstance(__lowerCAmelCase    ,      __lowerCAmelCase       ):
  											UpperCamelCase__         =	[files]
  									# Use `dl_manager.iter_files` to skip hidden files in an extracted archive
  									UpperCamelCase__         =	[dl_manager.iter_files(__lowerCAmelCase       ) for file in files]
  									return [datasets.SplitGenerator(name=datasets.Split.TRAIN    ,      gen_kwargs={"""files""": files}       )]
  							UpperCamelCase__         =	[]
  							for split_name, files in data_files.items():
  									if isinstance(__lowerCAmelCase    ,      __lowerCAmelCase       ):
  											UpperCamelCase__         =	[files]
  									# Use `dl_manager.iter_files` to skip hidden files in an extracted archive
  									UpperCamelCase__         =	[dl_manager.iter_files(__lowerCAmelCase       ) for file in files]
  									# Infer features is they are stoed in the arrow schema
  									if self.info.features is None:
  											for file in itertools.chain.from_iterable(__lowerCAmelCase       ):
  													with open(__lowerCAmelCase    ,      """rb"""       ) as f:
  															UpperCamelCase__         =	datasets.Features.from_arrow_schema(pa.ipc.open_stream(__lowerCAmelCase       ).schema       )
  													break
  									splits.append(datasets.SplitGenerator(name=__lowerCAmelCase    ,      gen_kwargs={"""files""": files}       )       )
  							return splits
  
  
  
  
  					def 	snake_case_		(						self    ,      __lowerCAmelCase       )						->  pa.Table:
  							if self.info.features is not None:
  									# more expensive cast to support nested features with keys in a different order
  									# allows str <-> int/float or str to Audio for example
  									UpperCamelCase__         =	table_cast(__lowerCAmelCase    ,      self.info.features.arrow_schema       )
  							return pa_table
  
  
  
  
  					def 	snake_case_		(						self    ,      __lowerCAmelCase       )						->  List[Any]:
  							for file_idx, file in enumerate(itertools.chain.from_iterable(__lowerCAmelCase       )       ):
  									with open(__lowerCAmelCase    ,      """rb"""       ) as f:
  											try:
  													for batch_idx, record_batch in enumerate(pa.ipc.open_stream(__lowerCAmelCase       )       ):
  															UpperCamelCase__         =	pa.Table.from_batches([record_batch]       )
  															# Uncomment for debugging (will print the Arrow table size and elements)
  															# logger.warning(f"pa_table: {pa_table} num rows: {pa_table.num_rows}")
  															# logger.warning('\n'.join(str(pa_table.slice(i, 1).to_pydict()) for i in range(pa_table.num_rows)))
  															yield F"""{file_idx}_{batch_idx}""", self._cast_table(__lowerCAmelCase       )
  											except ValueError as e:
  													logger.error(F"""Failed to read file '{file}' with error {type(__lowerCAmelCase       )}: {e}"""       )
  													raise
  
  
  
  
  
  
style_context: 
  
  
  
  
  
  def     a						(      _lowercase   :     float ,						_lowercase   :     int = 2       )     ->float:
  		return round((float(_lowercase       ) * 9 / 5) + 3_2 ,						_lowercase       )
  
  def     a						(      _lowercase   :     float ,						_lowercase   :     int = 2       )     ->float:
  		return round(float(_lowercase       ) + 273.15 ,						_lowercase       )
  
  def     a						(      _lowercase   :     float ,						_lowercase   :     int = 2       )     ->float:
  		return round((float(_lowercase       ) * 9 / 5) + 491.67 ,						_lowercase       )
  
  def     a						(      _lowercase   :     float ,						_lowercase   :     int = 2       )     ->float:
  		return round((float(_lowercase       ) - 3_2) * 5 / 9 ,						_lowercase       )
  
  def     a						(      _lowercase   :     float ,						_lowercase   :     int = 2       )     ->float:
  		return round(((float(_lowercase       ) - 3_2) * 5 / 9) + 273.15 ,						_lowercase       )
  
  def     a						(      _lowercase   :     float ,						_lowercase   :     int = 2       )     ->float:
  		return round(float(_lowercase       ) + 459.67 ,						_lowercase       )
  
  def     a						(      _lowercase   :     float ,						_lowercase   :     int = 2       )     ->float:
  		return round(float(_lowercase       ) - 273.15 ,						_lowercase       )
  
  def     a						(      _lowercase   :     float ,						_lowercase   :     int = 2       )     ->float:
  		return round(((float(_lowercase       ) - 273.15) * 9 / 5) + 3_2 ,						_lowercase       )
  
  def     a						(      _lowercase   :     float ,						_lowercase   :     int = 2       )     ->float:
  		return round((float(_lowercase       ) * 9 / 5) ,						_lowercase       )
  
  def     a						(      _lowercase   :     float ,						_lowercase   :     int = 2       )     ->float:
  		return round((float(_lowercase       ) - 491.67) * 5 / 9 ,						_lowercase       )
  
  def     a						(      _lowercase   :     float ,						_lowercase   :     int = 2       )     ->float:
  		return round(float(_lowercase       ) - 459.67 ,						_lowercase       )
  
  def     a						(      _lowercase   :     float ,						_lowercase   :     int = 2       )     ->float:
  		return round((float(_lowercase       ) * 5 / 9) ,						_lowercase       )
  
  def     a						(      _lowercase   :     float ,						_lowercase   :     int = 2       )     ->float:
  		return round((float(_lowercase       ) * 1.25 + 273.15) ,						_lowercase       )
  
  def     a						(      _lowercase   :     float ,						_lowercase   :     int = 2       )     ->float:
  		return round((float(_lowercase       ) * 2.25 + 3_2) ,						_lowercase       )
  
  def     a						(      _lowercase   :     float ,						_lowercase   :     int = 2       )     ->float:
  		return round((float(_lowercase       ) * 1.25) ,						_lowercase       )
  
  def     a						(      _lowercase   :     float ,						_lowercase   :     int = 2       )     ->float:
  		return round((float(_lowercase       ) * 2.25 + 3_2 + 459.67) ,						_lowercase       )
  
  
  if __name__ == "__main__":
  				import doctest
  
  				doctest.testmod()
  
  
  
  
  
  