


'''simple docstring'''



from dataclasses import dataclass, field
from typing import TYPE_CHECKING, Any, ClassVar, Dict, List, Optional, Union

import pyarrow as pa


if TYPE_CHECKING:
	from .features import FeatureType





@dataclass
class 							__UpperCamelCase				:
	A_				=    42
	A_				=    None
	# Automatically constructed
	A_				=    "dict"
	A_				=    None
	A_				=    field(default="Translation"		,      init=lowerCAmelCase_		,      repr=lowerCAmelCase_					)




	def __call__(   self							):

						'''simple docstring'''





						return pa.struct({lang: pa.string() for lang in sorted(self.languages							)}							)





	def       __UpperCAmelCase							(   self							):

						'''simple docstring'''





						from .features import Value

						return {k: Value('string'							) for k in sorted(self.languages							)}





@dataclass
class 							__UpperCamelCase				:
	A_				=    None
	A_				=    None
	A_				=    None
	# Automatically constructed
	A_				=    "dict"
	A_				=    None
	A_				=    field(default="TranslationVariableLanguages"		,      init=lowerCAmelCase_		,      repr=lowerCAmelCase_					)




	def       __UpperCAmelCase							(   self							):

						'''simple docstring'''





						__a			:       Union[str, Any]					    =  sorted(set(self.languages							)							) if self.languages else None
						__a			:       int					    =  len(self.languages							) if self.languages else None




	def __call__(   self							):

						'''simple docstring'''





						return pa.struct({'language': pa.list_(pa.string()							), 'translation': pa.list_(pa.string()							)}							)




	def       __UpperCAmelCase							(   self						,				__a							):

						'''simple docstring'''





						__a			:       int					    =  set(self.languages							)
						if self.languages and set(__a							) - lang_set:
											raise ValueError(
											    f"""Some languages in example ({", ".join(sorted(set(__a							) - lang_set							)							)}) are not in valid set ({", ".join(__a							)})."""							)

						# Convert dictionary into tuples, splitting out cases where there are
						# multiple translations for a single language.
						__a			:       Optional[int]					    =  []
						for lang, text in translation_dict.items():
											if isinstance(__a						,				__a							):
																translation_tuples.append((lang, text)							)
											else:
																translation_tuples.extend([(lang, el) for el in text]							)

        # Ensure translations are in ascending order by language code.
						__a    ,				__a			:       str					    =  zip(*sorted(__a							)							)

						return {"language": languages, "translation": translations}





	def       __UpperCAmelCase							(   self							):

						'''simple docstring'''





						from .features import Sequence, Value

						return {
						    "language": Sequence(Value('string'							)							),
						    "translation": Sequence(Value('string'							)							),
						}









"""simple docstring"""






from __future__ import annotations

from collections.abc import Iterator
from typing import Any






class lowerCAmelCase__	:






			'''simple docstring'''



			def __init__(  self  ,      lowercase  ):
							_lowerCamelCase     :			Any    =    data
							_lowerCamelCase     :			Node | None    =    None






class lowerCAmelCase__	:






			'''simple docstring'''



			def __init__(  self  ):
							_lowerCamelCase     :			str    =    None
							_lowerCamelCase     :			str    =    None
			def __iter__(  self  ):
							_lowerCamelCase     :			List[str]    =    self.head
							while self.head:
											yield node.data
											_lowerCamelCase     :			Optional[int]    =    node.next
											if node == self.head:
															break
			def __len__(  self  ):
							return sum(1 for _ in self  )
			def __repr__(  self  ):
							return "->".join(str(lowercase  ) for item in iter(self  )  )
			def 					A_    (  self  ,      lowercase  ):
							self.insert_nth(len(self  )  ,      lowercase  )
			def 					A_    (  self  ,      lowercase  ):
							self.insert_nth(0  ,      lowercase  )
			def 					A_    (  self  ,      lowercase  ,      lowercase  ):
							if index < 0 or index > len(self  ):
											raise IndexError('list index out of range.'  )
							_lowerCamelCase     :			List[Any]    =    Node(lowercase  )
							if self.head is None:
											_lowerCamelCase     :			str    =    new_node  # first node points itself
											_lowerCamelCase     :			Union[str, Any]    =    new_node
							elif index == 0:  # insert at head
											_lowerCamelCase     :			List[str]    =    self.head
											_lowerCamelCase     :			str    =    new_node
							else:
											_lowerCamelCase     :			Union[str, Any]    =    self.head
											for _ in range(index - 1  ):
															_lowerCamelCase     :			List[Any]    =    temp.next
											_lowerCamelCase     :			Union[str, Any]    =    temp.next
											_lowerCamelCase     :			List[str]    =    new_node
											if index == len(self  ) - 1:  # insert at tail
															_lowerCamelCase     :			Any    =    new_node
			def 					A_    (  self  ):
							return self.delete_nth(0  )
			def 					A_    (  self  ):
							return self.delete_nth(len(self  ) - 1  )
			def 					A_    (  self  ,      lowercase = 0  ):
							if not 0 <= index < len(self  ):
											raise IndexError('list index out of range.'  )
							_lowerCamelCase     :			Any    =    self.head
							if self.head == self.tail:  # just one node
											_lowerCamelCase     :			List[str]    =    None
							elif index == 0:  # delete head node
											_lowerCamelCase     :			List[str]    =    self.tail.next.next
											_lowerCamelCase     :			Optional[int]    =    self.head.next
							else:
											_lowerCamelCase     :			Dict    =    self.head
											for _ in range(index - 1  ):
															_lowerCamelCase     :			List[Any]    =    temp.next
											_lowerCamelCase     :			int    =    temp.next
											_lowerCamelCase     :			Optional[int]    =    temp.next.next
											if index == len(self  ) - 1:  # delete at tail
															_lowerCamelCase     :			List[Any]    =    temp
							return delete_node.data






			def 					A_    (  self  ):
							return len(self  ) == 0







def      _snake_case			(				):
				_lowerCamelCase     :			Union[str, Any]    =    CircularLinkedList()
				assert len(lowercase__		) == 0
				assert circular_linked_list.is_empty() is True
				assert str(lowercase__		) == ""

				try:
								circular_linked_list.delete_front()
								raise AssertionError  # This should not happen
				except IndexError:
								assert True  # This should happen

				try:
								circular_linked_list.delete_tail()
								raise AssertionError  # This should not happen
				except IndexError:
								assert True  # This should happen

				try:
								circular_linked_list.delete_nth(-1		)
								raise AssertionError
				except IndexError:
								assert True

				try:
								circular_linked_list.delete_nth(0		)
								raise AssertionError
				except IndexError:
								assert True

				assert circular_linked_list.is_empty() is True
				for i in range(5		):
								assert len(lowercase__		) == i
								circular_linked_list.insert_nth(lowercase__							,    i + 1		)
				assert str(lowercase__		) == "->".join(str(lowercase__		) for i in range(1							,    6		)		)

				circular_linked_list.insert_tail(6		)
				assert str(lowercase__		) == "->".join(str(lowercase__		) for i in range(1							,    7		)		)
				circular_linked_list.insert_head(0		)
				assert str(lowercase__		) == "->".join(str(lowercase__		) for i in range(0							,    7		)		)

				assert circular_linked_list.delete_front() == 0
				assert circular_linked_list.delete_tail() == 6
				assert str(lowercase__		) == "->".join(str(lowercase__		) for i in range(1							,    6		)		)
				assert circular_linked_list.delete_nth(2		) == 3

				circular_linked_list.insert_nth(2							,    3		)
				assert str(lowercase__		) == "->".join(str(lowercase__		) for i in range(1							,    6		)		)

				assert circular_linked_list.is_empty() is False


if __name__ == "__main__":
			import doctest

			doctest.testmod()