



from __future__ import annotations

from collections.abc import Iterable
from dataclasses import dataclass
from typing import Any


class 	a__       :


					"""simple docstring"""



					A__  :				Tuple					 =				('''_front''', '''_back''', '''_len''')


					@dataclass
					class 	a__       :


										"""simple docstring"""



										A__  :				Any					 =				None
										A__  :				Deque._Node | None					 =				None
										A__  :				Deque._Node | None					 =				None




					class 	a__       :


										"""simple docstring"""



										A__  :				int					 =				('''_cur''',)

										def __init__(		self     :str      ,  lowercase__     :Deque._Node | None    ):
															lowercase						   =       cur

										def __iter__(		self     :Tuple    ):
															return self



										def 				__UpperCAmelCase		(		self     :List[str]    ):
															if self._cur is None:
																				# finished iterating
																				raise StopIteration
															lowercase						   =       self._cur.val
															lowercase						   =       self._cur.next_node

															return val




					def __init__(		self     :Optional[int]      ,  lowercase__     :Iterable[Any] | None = None    ):
										lowercase						   =       None
										lowercase						   =       None
										lowercase						   =       0

										if iterable is not None:
															# append every value to the deque
															for val in iterable:
																				self.append(lowercase__    )

					def 				__UpperCAmelCase		(		self     :str      ,  lowercase__     :Any    ):
										lowercase						   =       self._Node(lowercase__      ,  lowercase__      ,  lowercase__    )
										if self.is_empty():
															# front = back
															lowercase						   =       lowercase						   =       node
															lowercase						   =       1
										else:
															# connect nodes
															lowercase						   =       node
															lowercase						   =       self._back
															lowercase						   =       node  # assign new back to the new node

															self._len += 1

															# make sure there were no errors
															assert not self.is_empty(), "Error on appending value."

					def 				__UpperCAmelCase		(		self     :Union[str, Any]      ,  lowercase__     :Any    ):
										lowercase						   =       self._Node(lowercase__      ,  lowercase__      ,  lowercase__    )
										if self.is_empty():
															# front = back
															lowercase						   =       lowercase						   =       node
															lowercase						   =       1
										else:
															# connect nodes
															lowercase						   =       self._front
															lowercase						   =       node
															lowercase						   =       node  # assign new front to the new node

															self._len += 1

															# make sure there were no errors
															assert not self.is_empty(), "Error on appending value."

					def 				__UpperCAmelCase		(		self     :Any      ,  lowercase__     :Iterable[Any]    ):
										for val in iterable:
															self.append(lowercase__    )

					def 				__UpperCAmelCase		(		self     :Union[str, Any]      ,  lowercase__     :Iterable[Any]    ):
										for val in iterable:
															self.appendleft(lowercase__    )

					def 				__UpperCAmelCase		(		self     :List[str]    ):
										assert not self.is_empty(), "Deque is empty."

										lowercase						   =       self._back
										lowercase						   =       self._back.prev_node  # set new back
										# drop the last node - python will deallocate memory automatically
										lowercase						   =       None

										self._len -= 1

										return topop.val

					def 				__UpperCAmelCase		(		self     :int    ):
										assert not self.is_empty(), "Deque is empty."

										lowercase						   =       self._front
										lowercase						   =       self._front.next_node  # set new front and drop the first node
										lowercase						   =       None

										self._len -= 1

										return topop.val

					def 				__UpperCAmelCase		(		self     :Tuple    ):
										return self._front is None

					def __len__(		self     :Optional[Any]    ):
										return self._len

					def __eq__(		self     :List[str]      ,  lowercase__     :object    ):

										if not isinstance(lowercase__      ,  lowercase__    ):
															return NotImplemented

										lowercase						   =       self._front
										lowercase						   =       other._front

										# if the length of the dequeues are not the same, they are not equal
										if len(self    ) != len(lowercase__    ):
															return False

										while me is not None and oth is not None:
															# compare every value
															if me.val != oth.val:
																				return False
															lowercase						   =       me.next_node
															lowercase						   =       oth.next_node

										return True

					def __iter__(		self     :str    ):
										return Deque._Iterator(self._front    )



					def __repr__(		self     :Union[str, Any]    ):
										lowercase						   =       []
										lowercase						   =       self._front
										while aux is not None:
															# append the values in a list to display
															values_list.append(aux.val    )
															lowercase						   =       aux.next_node

										return F"""[{', '.join(repr(lowercase__    ) for val in values_list    )}]"""


if __name__ == "__main__":
		import doctest

		doctest.testmod()











import unittest

from transformers import BlenderbotTokenizer, BlenderbotTokenizerFast
from transformers.utils import cached_property


class 	a__       (       unittest.TestCase       ):


					"""simple docstring"""



					@cached_property
					def 				__UpperCAmelCase		(		self     :Optional[Any]    ):
										return BlenderbotTokenizer.from_pretrained('facebook/blenderbot-3B'    )

					@cached_property
					def 				__UpperCAmelCase		(		self     :Any    ):
										return BlenderbotTokenizerFast.from_pretrained('facebook/blenderbot-3B'    )

					def 				__UpperCAmelCase		(		self     :str    ):
										lowercase						   =       self.tokenizer_ab
										lowercase						   =       ' I am a small frog.'
										lowercase						   =       tok([src_text]      ,  padding=lowercase__      ,  truncation=lowercase__    )['input_ids']
										lowercase						   =       tok.batch_decode(lowercase__      ,  skip_special_tokens=lowercase__      ,  clean_up_tokenization_spaces=lowercase__    )[0]
										assert src_text == decoded

					def 				__UpperCAmelCase		(		self     :Union[str, Any]    ):
										lowercase						   =       self.rust_tokenizer_ab
										lowercase						   =       ' I am a small frog.'
										lowercase						   =       tok([src_text]      ,  padding=lowercase__      ,  truncation=lowercase__    )['input_ids']
										lowercase						   =       tok.batch_decode(lowercase__      ,  skip_special_tokens=lowercase__      ,  clean_up_tokenization_spaces=lowercase__    )[0]
										assert src_text == decoded

					def 				__UpperCAmelCase		(		self     :Any    ):
										assert self.tokenizer_ab.add_prefix_space
										assert self.tokenizer_ab([' Sam', 'Sam']    ).input_ids == [[5502, 2], [5502, 2]]



					def 				__UpperCAmelCase		(		self     :Union[str, Any]    ):
										assert self.rust_tokenizer_ab.add_prefix_space
										assert self.rust_tokenizer_ab([' Sam', 'Sam']    ).input_ids == [[5502, 2], [5502, 2]]






