


import pytest

from datasets.splits import SplitDict, SplitInfo
from datasets.utils.py_utils import asdict
@pytest.mark.parametrize(
    'split_dict'      ,	[
        SplitDict(),
        SplitDict({'train': SplitInfo(name='train'      ,	num_bytes=1_337      ,	num_examples=42      ,	dataset_name='my_dataset'						)}						),
        SplitDict({'train': SplitInfo(name='train'      ,	num_bytes=1_337      ,	num_examples=42						)}						),
        SplitDict({'train': SplitInfo()}						),
    ]      ,	)
def 				UpperCamelCase__					(  SCREAMING_SNAKE_CASE__						):
 __lowerCamelCase		:							Union[str, Any]		 =						split_dict._to_yaml_list()
 assert len(SCREAMING_SNAKE_CASE__						) == len(SCREAMING_SNAKE_CASE__						)
 __lowerCamelCase		:							Optional[Any]		 =						SplitDict._from_yaml_list(SCREAMING_SNAKE_CASE__						)
 for split_name, split_info in split_dict.items():
  # dataset_name field is deprecated, and is therefore not part of the YAML dump
  __lowerCamelCase		:							Union[str, Any]		 =						None
  # the split name of split_dict takes over the name of the split info object
  __lowerCamelCase		:							List[str]		 =						split_name
 assert split_dict == reloaded



@pytest.mark.parametrize(
    'split_info'      ,	[SplitInfo(), SplitInfo(dataset_name=SCREAMING_SNAKE_CASE__						), SplitInfo(dataset_name='my_dataset'						)]						)
def 				UpperCamelCase__					(  SCREAMING_SNAKE_CASE__						):
 # For backward compatibility, we need asdict(split_dict) to return split info dictrionaries with the "dataset_name"
 # field even if it's deprecated. This way old versionso of `datasets` can still reload dataset_infos.json files
 __lowerCamelCase		:							Union[str, Any]		 =						asdict(SplitDict({'train': split_info}						)						)
 assert "dataset_name" in split_dict_asdict["train"]
 assert split_dict_asdict["train"]["dataset_name"] == split_info.dataset_name





import os
from typing import BinaryIO, Optional, Union

import numpy as np
import pyarrow.parquet as pq

from .. import Audio, Dataset, Features, Image, NamedSplit, Value, config
from ..features.features import FeatureType, _visit
from ..formatting import query_table
from ..packaged_modules import _PACKAGED_DATASETS_MODULES
from ..packaged_modules.parquet.parquet import Parquet
from ..utils import logging
from ..utils.typing import NestedDataStructureLike, PathLike
from .abc import AbstractDatasetReader
def 				UpperCamelCase__					(  SCREAMING_SNAKE_CASE__						):
 __lowerCamelCase		:							List[str]		 =						np.inf

 def set_batch_size(SCREAMING_SNAKE_CASE__						) -> None:
  nonlocal batch_size
  if isinstance(SCREAMING_SNAKE_CASE__      ,	SCREAMING_SNAKE_CASE__						):
   __lowerCamelCase		:							Union[str, Any]		 =						min(SCREAMING_SNAKE_CASE__      ,	config.PARQUET_ROW_GROUP_SIZE_FOR_IMAGE_DATASETS						)
  elif isinstance(SCREAMING_SNAKE_CASE__      ,	SCREAMING_SNAKE_CASE__						):
   __lowerCamelCase		:							Optional[Any]		 =						min(SCREAMING_SNAKE_CASE__      ,	config.PARQUET_ROW_GROUP_SIZE_FOR_AUDIO_DATASETS						)
  elif isinstance(SCREAMING_SNAKE_CASE__      ,	SCREAMING_SNAKE_CASE__						) and feature.dtype == "binary":
   __lowerCamelCase		:							List[str]		 =						min(SCREAMING_SNAKE_CASE__      ,	config.PARQUET_ROW_GROUP_SIZE_FOR_BINARY_DATASETS						)

 _visit(SCREAMING_SNAKE_CASE__      ,	SCREAMING_SNAKE_CASE__						)

 return None if batch_size is np.inf else batch_size


class 	A_ (	__UpperCamelCase   ):




      '''simple docstring'''


      def __init__(    self:	Tuple						,				a:	NestedDataStructureLike[PathLike]						,				a:	Optional[NamedSplit] = None						,				a:	Optional[Features] = None						,				a:	str = None						,				a:	bool = False						,				a:	bool = False						,				a:	Optional[int] = None						,				**a:	Optional[Any]						,				):
       super().__init__(
           a						,				split=a						,				features=a						,				cache_dir=a						,				keep_in_memory=a						,				streaming=a						,				num_proc=a						,				**a						,				)
       __lowerCamelCase		:							List[Any]		 =						path_or_paths if isinstance(a						,				a    ) else {self.split: path_or_paths}
       __lowerCamelCase		:							Optional[Any]		 =						_PACKAGED_DATASETS_MODULES['parquet'][1]
       __lowerCamelCase		:							List[str]		 =						Parquet(
           cache_dir=a						,				data_files=a						,				features=a						,				hash=a						,				**a						,				)




      def 					_snake_case     (    self:	List[str]    ):
       # Build iterable dataset
       if self.streaming:
        __lowerCamelCase		:							str		 =						self.builder.as_streaming_dataset(split=self.split    )
       # Build regular (map-style) dataset
       else:
        __lowerCamelCase		:							str		 =						None
        __lowerCamelCase		:							Optional[Any]		 =						None
        __lowerCamelCase		:							Union[str, Any]		 =						None
        __lowerCamelCase		:							int		 =						None

        self.builder.download_and_prepare(
            download_config=a						,				download_mode=a						,				verification_mode=a						,				base_path=a						,				num_proc=self.num_proc						,				)
        __lowerCamelCase		:							Tuple		 =						self.builder.as_dataset(
            split=self.split						,				verification_mode=a						,				in_memory=self.keep_in_memory    )
       return dataset



class 	A_ :




      '''simple docstring'''


      def __init__(    self:	Optional[int]						,				a:	Dataset						,				a:	Union[PathLike, BinaryIO]						,				a:	Optional[int] = None						,				**a:	List[Any]						,				):
       __lowerCamelCase		:							Optional[int]		 =						dataset
       __lowerCamelCase		:							List[Any]		 =						path_or_buf
       __lowerCamelCase		:							List[str]		 =						batch_size or get_writer_batch_size(dataset.features    )
       __lowerCamelCase		:							List[Any]		 =						parquet_writer_kwargs




      def 					_snake_case     (    self:	Union[str, Any]    ):
       __lowerCamelCase		:							Optional[int]		 =						self.batch_size if self.batch_size else config.DEFAULT_MAX_BATCH_SIZE

       if isinstance(self.path_or_buf						,				(str, bytes, os.PathLike)    ):
        with open(self.path_or_buf						,				'wb+'    ) as buffer:
         __lowerCamelCase		:							Optional[int]		 =						self._write(file_obj=a						,				batch_size=a						,				**self.parquet_writer_kwargs    )
       else:
        __lowerCamelCase		:							Any		 =						self._write(file_obj=self.path_or_buf						,				batch_size=a						,				**self.parquet_writer_kwargs    )
       return written




      def 					_snake_case     (    self:	Optional[int]						,				a:	BinaryIO						,				a:	int						,				**a:	str    ):
       __lowerCamelCase		:							Dict		 =						0
       __lowerCamelCase		:							Union[str, Any]		 =						parquet_writer_kwargs.pop('path_or_buf'						,				a    )
       __lowerCamelCase		:							str		 =						self.dataset.features.arrow_schema

       __lowerCamelCase		:							Any		 =						pq.ParquetWriter(a						,				schema=a						,				**a    )

       for offset in logging.tqdm(
           range(0						,				len(self.dataset    )						,				a    )						,				unit='ba'						,				disable=not logging.is_progress_bar_enabled()						,				desc='Creating parquet from Arrow format'						,				):
        __lowerCamelCase		:							Any		 =						query_table(
            table=self.dataset._data						,				key=slice(a						,				offset + batch_size    )						,				indices=self.dataset._indices if self.dataset._indices is not None else None						,				)
        writer.write_table(a    )
        written += batch.nbytes
       writer.close()
       return written

