
"""simple docstring"""






import os
import tempfile
from pathlib import Path
from unittest import TestCase

import pyarrow as pa
import pytest

from datasets.arrow_dataset import Dataset
from datasets.arrow_reader import ArrowReader, BaseReader, FileInstructions, ReadInstruction, make_file_instructions
from datasets.info import DatasetInfo
from datasets.splits import NamedSplit, Split, SplitDict, SplitInfo

from .utils import assert_arrow_memory_doesnt_increase, assert_arrow_memory_increases




class      _SCREAMING_SNAKE_CASE   (     A__				):






			def 					__lowerCAmelCase					(   self			,  __A			,  __A=False			)     ->	int:
						lowerCAmelCase_	,			lowerCAmelCase_	,			lowerCAmelCase_       :Dict     	=    (
						    filename_skip_take["""filename"""],
						    filename_skip_take["""skip"""] if """skip""" in filename_skip_take else None,
						    filename_skip_take["""take"""] if """take""" in filename_skip_take else None,
						)
						open(os.path.join(__A			)			,  """wb"""			).close()
						lowerCAmelCase_       :Optional[int]     	=    pa.Table.from_pydict({"""filename""": [Path(__A			).name] * 100}			)
						if take == -1:
									lowerCAmelCase_       :Any     	=    len(__A			) - skip
						if skip is not None and take is not None:
									lowerCAmelCase_       :Union[str, Any]     	=    pa_table.slice(__A			,  __A			)
						return pa_table




class      _SCREAMING_SNAKE_CASE   (     A__				):






			def 					__lowerCAmelCase					(   self			)     ->	Any:
						lowerCAmelCase_       :Tuple     	=    """my_name"""
						lowerCAmelCase_       :Tuple     	=    SplitInfo(name="""train"""			,  num_examples=100			)
						lowerCAmelCase_       :List[Any]     	=    SplitInfo(name="""test"""			,  num_examples=100			)
						lowerCAmelCase_       :Optional[Any]     	=    [train_info, test_info]
						lowerCAmelCase_       :Tuple     	=    SplitDict()
						split_dict.add(__A			)
						split_dict.add(__A			)
						lowerCAmelCase_       :Any     	=    DatasetInfo(splits=__A			)

						with tempfile.TemporaryDirectory() as tmp_dir:
									lowerCAmelCase_       :Dict     	=    ReaderTest(__A			,  __A			)

									lowerCAmelCase_       :Dict     	=    """test[:33%]"""
									lowerCAmelCase_       :List[Any]     	=    Dataset(**reader.read(__A			,  __A			,  __A			)			)
									self.assertEqual(dset["""filename"""][0]			,  f"""{name}-test"""			)
									self.assertEqual(dset.num_rows			,  33			)
									self.assertEqual(dset.num_columns			,  1			)

									lowerCAmelCase_       :Dict     	=    ["""train""", """test[:33%]"""]
									lowerCAmelCase_       :Any     	=    [Split.TRAIN, ReadInstruction.from_spec("""test[:33%]"""			)]
									for instructions in [instructionsa, instructionsa]:
												lowerCAmelCase_       :Dict     	=    [reader.read(__A			,  __A			,  __A			) for instr in instructions]
												lowerCAmelCase_	,			lowerCAmelCase_       :Any     	=    (Dataset(**__A			) for dataset_kwargs in datasets_kwargs)
												self.assertEqual(train_dset["""filename"""][0]			,  f"""{name}-train"""			)
												self.assertEqual(train_dset.num_rows			,  100			)
												self.assertEqual(train_dset.num_columns			,  1			)
												self.assertIsInstance(train_dset.split			,  __A			)
												self.assertEqual(str(train_dset.split			)			,  """train"""			)
												self.assertEqual(test_dset["""filename"""][0]			,  f"""{name}-test"""			)
												self.assertEqual(test_dset.num_rows			,  33			)
												self.assertEqual(test_dset.num_columns			,  1			)
												self.assertIsInstance(test_dset.split			,  __A			)
												self.assertEqual(str(test_dset.split			)			,  """test[:33%]"""			)
												del train_dset, test_dset






			def 					__lowerCAmelCase					(   self			)     ->	Union[str, Any]:
						lowerCAmelCase_       :List[Any]     	=    """my_name"""
						lowerCAmelCase_       :Optional[int]     	=    SplitInfo(name="""train"""			,  num_examples=1000			,  shard_lengths=[100] * 10			)
						lowerCAmelCase_       :int     	=    [train_info]
						lowerCAmelCase_       :Dict     	=    SplitDict()
						split_dict.add(__A			)
						lowerCAmelCase_       :List[str]     	=    DatasetInfo(splits=__A			)

						with tempfile.TemporaryDirectory() as tmp_dir:
									lowerCAmelCase_       :str     	=    ReaderTest(__A			,  __A			)

									lowerCAmelCase_       :Union[str, Any]     	=    """train[:33%]"""
									lowerCAmelCase_       :Optional[int]     	=    Dataset(**reader.read(__A			,  __A			,  __A			)			)
									self.assertEqual(dset["""filename"""][0]			,  f"""{name}-train-00000-of-00010"""			)
									self.assertEqual(dset["""filename"""][-1]			,  f"""{name}-train-00003-of-00010"""			)
									self.assertEqual(dset.num_rows			,  330			)
									self.assertEqual(dset.num_columns			,  1			)






			def 					__lowerCAmelCase					(   self			)     ->	str:
						lowerCAmelCase_       :Dict     	=    SplitInfo(name="""train"""			,  num_examples=100			)
						lowerCAmelCase_       :List[Any]     	=    SplitInfo(name="""test"""			,  num_examples=100			)
						lowerCAmelCase_       :Dict     	=    SplitDict()
						split_dict.add(__A			)
						split_dict.add(__A			)
						lowerCAmelCase_       :List[Any]     	=    DatasetInfo(splits=__A			)

						with tempfile.TemporaryDirectory() as tmp_dir:
									lowerCAmelCase_       :List[str]     	=    ReaderTest(__A			,  __A			)

									lowerCAmelCase_       :int     	=    [
									    {"""filename""": os.path.join(__A			,  """train"""			)},
									    {"""filename""": os.path.join(__A			,  """test"""			), """skip""": 10, """take""": 10},
									]
									lowerCAmelCase_       :Tuple     	=    Dataset(**reader.read_files(__A			,  original_instructions="""train+test[10:20]"""			)			)
									self.assertEqual(dset.num_rows			,  110			)
									self.assertEqual(dset.num_columns			,  1			)
									del dset






@pytest.mark.parametrize("""in_memory""" ,	[False, True]						)
def 		_snake_case			(      lowercase__						:    Union[str, Any] ,	lowercase__						:    str ,	lowercase__						:    List[Any]						)    ->							Tuple:


			'''simple docstring'''





			lowerCAmelCase_       :Optional[int]     	=    arrow_file
			with assert_arrow_memory_increases() if in_memory else assert_arrow_memory_doesnt_increase():
						lowerCAmelCase_       :Dict     	=    ArrowReader.read_table(lowercase__ ,	in_memory=lowercase__						)
			assert table.shape == dataset.data.shape
			assert set(table.column_names						) == set(dataset.data.column_names						)
			assert dict(table.to_pydict()						) == dict(dataset.data.to_pydict()						)  # to_pydict returns OrderedDict






@pytest.mark.parametrize("""in_memory""" ,	[False, True]						)
def 		_snake_case			(      lowercase__						:    Union[str, Any] ,	lowercase__						:    Optional[int] ,	lowercase__						:    str						)    ->							Optional[int]:


			'''simple docstring'''





			lowerCAmelCase_       :List[Any]     	=    arrow_file
			lowerCAmelCase_       :Union[str, Any]     	=    ArrowReader("""""" ,	lowercase__						)
			with assert_arrow_memory_increases() if in_memory else assert_arrow_memory_doesnt_increase():
						lowerCAmelCase_       :Optional[Any]     	=    reader.read_files([{"""filename""": filename}] ,	in_memory=lowercase__						)
			assert dataset_kwargs.keys() == {"arrow_table", "info", "split"}
			lowerCAmelCase_       :Dict     	=    dataset_kwargs["""arrow_table"""]
			assert table.shape == dataset.data.shape
			assert set(table.column_names						) == set(dataset.data.column_names						)
			assert dict(table.to_pydict()						) == dict(dataset.data.to_pydict()						)  # to_pydict returns OrderedDict






def 		_snake_case			(      )    ->							Tuple:


			'''simple docstring'''





			assert ReadInstruction("""train""" ,	to=1_0 ,	unit="""abs"""						).to_spec() == "train[:10]"
			assert ReadInstruction("""train""" ,	from_=-8_0 ,	to=1_0 ,	unit="""%"""						).to_spec() == "train[-80%:10%]"

			lowerCAmelCase_       :Dict     	=    """train+test"""
			assert ReadInstruction.from_spec(lowercase__						).to_spec() == spec_train_test

			lowerCAmelCase_       :str     	=    """train[2:10]"""
			assert ReadInstruction.from_spec(lowercase__						).to_spec() == spec_train_abs

			lowerCAmelCase_       :Optional[int]     	=    """train[15%:-20%]"""
			assert ReadInstruction.from_spec(lowercase__						).to_spec() == spec_train_pct

			lowerCAmelCase_       :Union[str, Any]     	=    """train[:10%](closest)"""
			assert ReadInstruction.from_spec(lowercase__						).to_spec() == "train[:10%]"

			lowerCAmelCase_       :Optional[Any]     	=    """train[:10%](pct1_dropremainder)"""
			assert ReadInstruction.from_spec(lowercase__						).to_spec() == spec_train_pct_rounding

			lowerCAmelCase_       :Union[str, Any]     	=    """train[:10%](pct1_dropremainder)+test[-10%:](pct1_dropremainder)"""
			assert ReadInstruction.from_spec(lowercase__						).to_spec() == spec_train_test_pct_rounding






def 		_snake_case			(      )    ->							Dict:


			'''simple docstring'''





			lowerCAmelCase_       :Any     	=    """dummy"""
			lowerCAmelCase_       :Dict     	=    [SplitInfo(name="""train""" ,	num_examples=1_0_0						)]
			lowerCAmelCase_       :Dict     	=    """train[:33%]"""
			lowerCAmelCase_       :Union[str, Any]     	=    """arrow"""
			lowerCAmelCase_       :str     	=    """prefix"""

			lowerCAmelCase_       :List[str]     	=    make_file_instructions(lowercase__ ,	lowercase__ ,	lowercase__ ,	lowercase__ ,	lowercase__						)
			assert isinstance(lowercase__ ,	lowercase__						)
			assert file_instructions.num_examples == 3_3
			assert file_instructions.file_instructions == [
			    {"filename": os.path.join(lowercase__ ,	f"""{name}-train.arrow"""						), "skip": 0, "take": 3_3}
			]

			lowerCAmelCase_       :List[Any]     	=    [SplitInfo(name="""train""" ,	num_examples=1_0_0 ,	shard_lengths=[1_0] * 1_0						)]
			lowerCAmelCase_       :int     	=    make_file_instructions(lowercase__ ,	lowercase__ ,	lowercase__ ,	lowercase__ ,	lowercase__						)
			assert isinstance(lowercase__ ,	lowercase__						)
			assert file_instructions.num_examples == 3_3
			assert file_instructions.file_instructions == [
			    {"filename": os.path.join(lowercase__ ,	f"""{name}-train-00000-of-00010.arrow"""						), "skip": 0, "take": -1},
			    {"filename": os.path.join(lowercase__ ,	f"""{name}-train-00001-of-00010.arrow"""						), "skip": 0, "take": -1},
			    {"filename": os.path.join(lowercase__ ,	f"""{name}-train-00002-of-00010.arrow"""						), "skip": 0, "take": -1},
			    {"filename": os.path.join(lowercase__ ,	f"""{name}-train-00003-of-00010.arrow"""						), "skip": 0, "take": 3},
			]






@pytest.mark.parametrize("""name, expected_exception""" ,	[(None, TypeError), ("""""", ValueError)]						)
def 		_snake_case			(      lowercase__						:    str ,	lowercase__						:    Any						)    ->							Optional[Any]:


			'''simple docstring'''





			lowerCAmelCase_       :Union[str, Any]     	=    [SplitInfo(name="""train""" ,	num_examples=1_0_0						)]
			lowerCAmelCase_       :List[Any]     	=    """train"""
			lowerCAmelCase_       :str     	=    """arrow"""
			lowerCAmelCase_       :Optional[int]     	=    """prefix_path"""
			with pytest.raises(lowercase__						):
						lowerCAmelCase_       :int     	=    make_file_instructions(lowercase__ ,	lowercase__ ,	lowercase__ ,	lowercase__ ,	lowercase__						)








"""simple docstring"""






from __future__ import annotations






def 		_snake_case			(      lowercase__						:    list[int | float]						)    ->							int | float:


			'''simple docstring'''





			if len(lowercase__						) == 0:
						raise ValueError("""find_min() arg is an empty sequence"""						)
			lowerCAmelCase_       :Optional[int]     	=    nums[0]
			for num in nums:
						lowerCAmelCase_       :Optional[Any]     	=    min(lowercase__ ,	lowercase__						)
			return min_num


if __name__ == "__main__":
				import doctest

				doctest.testmod(verbose=True)






