'''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		(			lowerCamelCase_			):







  '''simple docstring'''






  def _UpperCamelCase	(					self ,						snake_case_ ,						snake_case_=False		):




       '''simple docstring'''

       UpperCAmelCase_  ,     UpperCAmelCase_  ,     UpperCAmelCase_				:  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(snake_case_		) ,						'wb'		).close()
       UpperCAmelCase_				:  Tuple  = pa.Table.from_pydict({'filename': [Path(snake_case_		).name] * 1_0_0}		)
       if take == -1:
            UpperCAmelCase_				:  Optional[int]  = len(snake_case_		) - skip
       if skip is not None and take is not None:
            UpperCAmelCase_				:  Optional[int]  = pa_table.slice(snake_case_ ,						snake_case_		)
       return pa_table







class 	__SCREAMING_SNAKE_CASE		(			lowerCamelCase_			):







  '''simple docstring'''






  def _UpperCamelCase	(					self		):




       '''simple docstring'''

       UpperCAmelCase_				:  Union[str, Any]  = 'my_name'
       UpperCAmelCase_				:  Dict  = SplitInfo(name='train' ,						num_examples=1_0_0		)
       UpperCAmelCase_				:  int  = SplitInfo(name='test' ,						num_examples=1_0_0		)
       UpperCAmelCase_				:  Any  = [train_info, test_info]
       UpperCAmelCase_				:  Union[str, Any]  = SplitDict()
       split_dict.add(snake_case_		)
       split_dict.add(snake_case_		)
       UpperCAmelCase_				:  List[str]  = DatasetInfo(splits=snake_case_		)

       with tempfile.TemporaryDirectory() as tmp_dir:
            UpperCAmelCase_				:  Optional[int]  = ReaderTest(snake_case_ ,						snake_case_		)

            UpperCAmelCase_				:  Optional[int]  = 'test[:33%]'
            UpperCAmelCase_				:  Dict  = Dataset(**reader.read(snake_case_ ,						snake_case_ ,						snake_case_		)		)
            self.assertEqual(dset['filename'][0] ,						F'''{name}-test'''		)
            self.assertEqual(dset.num_rows ,						3_3		)
            self.assertEqual(dset.num_columns ,						1		)

            UpperCAmelCase_				:  List[str]  = ['train', 'test[:33%]']
            UpperCAmelCase_				:  Dict  = [Split.TRAIN, ReadInstruction.from_spec('test[:33%]'		)]
            for instructions in [instructionsa, instructionsa]:
                 UpperCAmelCase_				:  Dict  = [reader.read(snake_case_ ,						snake_case_ ,						snake_case_		) for instr in instructions]
                 UpperCAmelCase_  ,     UpperCAmelCase_				:  Optional[Any]  = (Dataset(**snake_case_		) for dataset_kwargs in datasets_kwargs)
                 self.assertEqual(train_dset['filename'][0] ,						F'''{name}-train'''		)
                 self.assertEqual(train_dset.num_rows ,						1_0_0		)
                 self.assertEqual(train_dset.num_columns ,						1		)
                 self.assertIsInstance(train_dset.split ,						snake_case_		)
                 self.assertEqual(str(train_dset.split		) ,						'train'		)
                 self.assertEqual(test_dset['filename'][0] ,						F'''{name}-test'''		)
                 self.assertEqual(test_dset.num_rows ,						3_3		)
                 self.assertEqual(test_dset.num_columns ,						1		)
                 self.assertIsInstance(test_dset.split ,						snake_case_		)
                 self.assertEqual(str(test_dset.split		) ,						'test[:33%]'		)
                 del train_dset, test_dset


  def _UpperCamelCase	(					self		):




       '''simple docstring'''

       UpperCAmelCase_				:  Dict  = 'my_name'
       UpperCAmelCase_				:  Any  = SplitInfo(name='train' ,						num_examples=1_0_0_0 ,						shard_lengths=[1_0_0] * 1_0		)
       UpperCAmelCase_				:  Any  = [train_info]
       UpperCAmelCase_				:  Optional[int]  = SplitDict()
       split_dict.add(snake_case_		)
       UpperCAmelCase_				:  str  = DatasetInfo(splits=snake_case_		)

       with tempfile.TemporaryDirectory() as tmp_dir:
            UpperCAmelCase_				:  Optional[Any]  = ReaderTest(snake_case_ ,						snake_case_		)

            UpperCAmelCase_				:  int  = 'train[:33%]'
            UpperCAmelCase_				:  Optional[Any]  = Dataset(**reader.read(snake_case_ ,						snake_case_ ,						snake_case_		)		)
            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 ,						3_3_0		)
            self.assertEqual(dset.num_columns ,						1		)






  def _UpperCamelCase	(					self		):




       '''simple docstring'''

       UpperCAmelCase_				:  int  = SplitInfo(name='train' ,						num_examples=1_0_0		)
       UpperCAmelCase_				:  Tuple  = SplitInfo(name='test' ,						num_examples=1_0_0		)
       UpperCAmelCase_				:  str  = SplitDict()
       split_dict.add(snake_case_		)
       split_dict.add(snake_case_		)
       UpperCAmelCase_				:  Optional[int]  = DatasetInfo(splits=snake_case_		)

       with tempfile.TemporaryDirectory() as tmp_dir:
            UpperCAmelCase_				:  Dict  = ReaderTest(snake_case_ ,						snake_case_		)

            UpperCAmelCase_				:  Optional[Any]  = [
                {'filename': os.path.join(snake_case_ ,						'train'		)},
                {'filename': os.path.join(snake_case_ ,						'test'		), 'skip': 1_0, 'take': 1_0},
            ]
            UpperCAmelCase_				:  Optional[Any]  = Dataset(**reader.read_files(snake_case_ ,						original_instructions='train+test[10:20]'		)		)
            self.assertEqual(dset.num_rows ,						1_1_0		)
            self.assertEqual(dset.num_columns ,						1		)
            del dset







@pytest.mark.parametrize('in_memory'      ,	[False, True]  )
def    _lowerCamelCase       ( lowerCamelCase_   :				List[Any]      ,	lowerCamelCase_   :				Dict      ,	lowerCamelCase_   :				int  ):



     """simple docstring"""





     UpperCAmelCase_				:  List[Any]  = arrow_file
     with assert_arrow_memory_increases() if in_memory else assert_arrow_memory_doesnt_increase():
          UpperCAmelCase_				:  str  = ArrowReader.read_table(lowerCamelCase_      ,	in_memory=lowerCamelCase_  )
     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    _lowerCamelCase       ( lowerCamelCase_   :				List[str]      ,	lowerCamelCase_   :				Any      ,	lowerCamelCase_   :				List[Any]  ):



     """simple docstring"""





     UpperCAmelCase_				:  Any  = arrow_file
     UpperCAmelCase_				:  Dict  = ArrowReader(''      ,	lowerCamelCase_  )
     with assert_arrow_memory_increases() if in_memory else assert_arrow_memory_doesnt_increase():
          UpperCAmelCase_				:  List[str]  = reader.read_files([{'filename': filename}]      ,	in_memory=lowerCamelCase_  )
     assert dataset_kwargs.keys() == {"arrow_table", "info", "split"}
     UpperCAmelCase_				:  Union[str, Any]  = 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    _lowerCamelCase       ( ):



     """simple docstring"""





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

     UpperCAmelCase_				:  Dict  = 'train+test'
     assert ReadInstruction.from_spec(lowerCamelCase_  ).to_spec() == spec_train_test

     UpperCAmelCase_				:  List[Any]  = 'train[2:10]'
     assert ReadInstruction.from_spec(lowerCamelCase_  ).to_spec() == spec_train_abs

     UpperCAmelCase_				:  Any  = 'train[15%:-20%]'
     assert ReadInstruction.from_spec(lowerCamelCase_  ).to_spec() == spec_train_pct

     UpperCAmelCase_				:  Dict  = 'train[:10%](closest)'
     assert ReadInstruction.from_spec(lowerCamelCase_  ).to_spec() == "train[:10%]"

     UpperCAmelCase_				:  Tuple  = 'train[:10%](pct1_dropremainder)'
     assert ReadInstruction.from_spec(lowerCamelCase_  ).to_spec() == spec_train_pct_rounding

     UpperCAmelCase_				:  Union[str, Any]  = 'train[:10%](pct1_dropremainder)+test[-10%:](pct1_dropremainder)'
     assert ReadInstruction.from_spec(lowerCamelCase_  ).to_spec() == spec_train_test_pct_rounding


def    _lowerCamelCase       ( ):



     """simple docstring"""





     UpperCAmelCase_				:  List[str]  = 'dummy'
     UpperCAmelCase_				:  List[Any]  = [SplitInfo(name='train'      ,	num_examples=100  )]
     UpperCAmelCase_				:  Union[str, Any]  = 'train[:33%]'
     UpperCAmelCase_				:  Any  = 'arrow'
     UpperCAmelCase_				:  Optional[Any]  = 'prefix'

     UpperCAmelCase_				:  Union[str, Any]  = make_file_instructions(lowerCamelCase_      ,	lowerCamelCase_      ,	lowerCamelCase_      ,	lowerCamelCase_      ,	lowerCamelCase_  )
     assert isinstance(lowerCamelCase_      ,	lowerCamelCase_  )
     assert file_instructions.num_examples == 33
     assert file_instructions.file_instructions == [
         {"filename": os.path.join(lowerCamelCase_      ,	F'''{name}-train.arrow'''  ), "skip": 0, "take": 33}
     ]

     UpperCAmelCase_				:  Optional[int]  = [SplitInfo(name='train'      ,	num_examples=100      ,	shard_lengths=[10] * 10  )]
     UpperCAmelCase_				:  Optional[Any]  = make_file_instructions(lowerCamelCase_      ,	lowerCamelCase_      ,	lowerCamelCase_      ,	lowerCamelCase_      ,	lowerCamelCase_  )
     assert isinstance(lowerCamelCase_      ,	lowerCamelCase_  )
     assert file_instructions.num_examples == 33
     assert file_instructions.file_instructions == [
         {"filename": os.path.join(lowerCamelCase_      ,	F'''{name}-train-00000-of-00010.arrow'''  ), "skip": 0, "take": -1},
         {"filename": os.path.join(lowerCamelCase_      ,	F'''{name}-train-00001-of-00010.arrow'''  ), "skip": 0, "take": -1},
         {"filename": os.path.join(lowerCamelCase_      ,	F'''{name}-train-00002-of-00010.arrow'''  ), "skip": 0, "take": -1},
         {"filename": os.path.join(lowerCamelCase_      ,	F'''{name}-train-00003-of-00010.arrow'''  ), "skip": 0, "take": 3},
     ]





@pytest.mark.parametrize('name, expected_exception'      ,	[(None, TypeError), ('', ValueError)]  )
def    _lowerCamelCase       ( lowerCamelCase_   :				int      ,	lowerCamelCase_   :				List[str]  ):



     """simple docstring"""





     UpperCAmelCase_				:  Union[str, Any]  = [SplitInfo(name='train'      ,	num_examples=100  )]
     UpperCAmelCase_				:  List[Any]  = 'train'
     UpperCAmelCase_				:  Optional[int]  = 'arrow'
     UpperCAmelCase_				:  int  = 'prefix_path'
     with pytest.raises(lowerCamelCase_  ):
          UpperCAmelCase_				:  Any  = make_file_instructions(lowerCamelCase_      ,	lowerCamelCase_      ,	lowerCamelCase_      ,	lowerCamelCase_      ,	lowerCamelCase_  )











from __future__ import annotations

from typing import Generic, TypeVar

UpperCamelCase__			=    TypeVar("T")
class       _lowerCAmelCase (			Generic[T]      ):






			"""simple docstring"""





			def __init__(					self						:							int      ,  lowercase						:							T )    ->       Union[str, Any]:
									"""simple docstring"""







									__lowercase											=					data  # Assign data
									__lowercase											=					None  # Initialize next as null
									__lowercase											=					None  # Initialize prev as null





class       _lowerCAmelCase (			Generic[T]      ):






			"""simple docstring"""





			def __init__(					self						:							Any )    ->       None:
									"""simple docstring"""







									__lowercase											=					None





			def 		snake_case__      (					self						:							str      ,  lowercase						:							T )    ->       None:
									"""simple docstring"""







									if self.head is None:
															__lowercase											=					Node(lowercase )
									else:
															__lowercase											=					Node(lowercase )
															__lowercase											=					new_node
															__lowercase											=					self.head
															__lowercase											=					None
															__lowercase											=					new_node





			def 		snake_case__      (					self						:							Optional[Any] )    ->       T | None:
									"""simple docstring"""







									if self.head is None:
															return None
									else:
															assert self.head is not None
															__lowercase											=					self.head.data
															__lowercase											=					self.head.next
															if self.head is not None:
																					__lowercase											=					None
															return temp





			def 		snake_case__      (					self						:							Optional[Any] )    ->       T | None:
									"""simple docstring"""







									return self.head.data if self.head is not None else None





			def __len__(					self						:							List[str] )    ->       int:
									"""simple docstring"""







									__lowercase											=					self.head
									__lowercase											=					0
									while temp is not None:
															count += 1
															__lowercase											=					temp.next
									return count





			def 		snake_case__      (					self						:							Optional[Any] )    ->       bool:
									"""simple docstring"""







									return self.head is None







			def 		snake_case__      (					self						:							Optional[Any] )    ->       None:
									"""simple docstring"""







									print("""stack elements are:""" )
									__lowercase											=					self.head
									while temp is not None:
															print(temp.data      ,  end="""->""" )
															__lowercase											=					temp.next


# Code execution starts here
if __name__ == "__main__":
			# Start with the empty stack
			UpperCamelCase__			=    Stack()

			# Insert 4 at the beginning. So stack becomes 4->None
			print("Stack operations using Doubly LinkedList")
			stack.push(4)

			# Insert 5 at the beginning. So stack becomes 4->5->None
			stack.push(5)

			# Insert 6 at the beginning. So stack becomes 4->5->6->None
			stack.push(6)

			# Insert 7 at the beginning. So stack becomes 4->5->6->7->None
			stack.push(7)

			# Print the stack
			stack.print_stack()

			# Print the top element
			print("\nTop element is ", stack.top())

			# Print the stack size
			print("Size of the stack is ", len(stack))

			# pop the top element
			stack.pop()

			# pop the top element
			stack.pop()

			# two elements have now been popped off
			stack.print_stack()

			# Print True if the stack is empty else False
			print("\nstack is empty:", stack.is_empty())





