




from __future__ import annotations

from collections.abc import Iterator
from typing import Any

class       A   :







							def __init__(  self	:  str							,      lowerCAmelCase_	:  Any )      ->							Union[str, Any]:


														"""simple docstring"""


														_a     					=    data
														_a     					=    None



class       A   :







							def __init__(  self	:  int )      ->							Any:


														"""simple docstring"""


														_a     					=    None
														_a     					=    None







							def __iter__(  self	:  Dict )      ->							Union[str, Any]:


														"""simple docstring"""


														_a     					=    self.head
														while self.head:
																					yield node.data
																					_a     					=    node.next
																					if node == self.head:
																												break







							def __len__(  self	:  List[Any] )      ->							int:


														"""simple docstring"""


														return sum(1 for _ in self )







							def __repr__(  self	:  int )      ->							Tuple:


														"""simple docstring"""


														return "->".join(str(__lowerCAmelCase ) for item in iter(self ) )







							def        __lowerCAmelCase      (  self	:  List[Any]							,      lowerCAmelCase_	:  Any )      ->							Optional[Any]:


														"""simple docstring"""


														self.insert_nth(len(self )							,      __lowerCAmelCase )







							def        __lowerCAmelCase      (  self	:  str							,      lowerCAmelCase_	:  Any )      ->							int:


														"""simple docstring"""


														self.insert_nth(0							,      __lowerCAmelCase )







							def        __lowerCAmelCase      (  self	:  Optional[Any]							,      lowerCAmelCase_	:  int							,      lowerCAmelCase_	:  Any )      ->							List[Any]:


														"""simple docstring"""


														if index < 0 or index > len(self ):
																					raise IndexError('''list index out of range.''' )
														_a     					=    Node(__lowerCAmelCase )
														if self.head is None:
																					_a     					=    new_node  # first node points itself
																					_a     					=    _a     					=    new_node
														elif index == 0:  # insert at head
																					_a     					=    self.head
																					_a     					=    _a     					=    new_node
														else:
																					_a     					=    self.head
																					for _ in range(index - 1 ):
																												_a     					=    temp.next
																					_a     					=    temp.next
																					_a     					=    new_node
																					if index == len(self ) - 1:  # insert at tail
																												_a     					=    new_node







							def        __lowerCAmelCase      (  self	:  Optional[Any] )      ->							Union[str, Any]:


														"""simple docstring"""


														return self.delete_nth(0 )







							def        __lowerCAmelCase      (  self	:  Union[str, Any] )      ->							Union[str, Any]:


														"""simple docstring"""


														return self.delete_nth(len(self ) - 1 )







							def        __lowerCAmelCase      (  self	:  Union[str, Any]							,      lowerCAmelCase_	:  int = 0 )      ->							Optional[Any]:


														"""simple docstring"""


														if not 0 <= index < len(self ):
																					raise IndexError('''list index out of range.''' )
														_a     					=    self.head
														if self.head == self.tail:  # just one node
																					_a     					=    _a     					=    None
														elif index == 0:  # delete head node
																					_a     					=    self.tail.next.next
																					_a     					=    self.head.next
														else:
																					_a     					=    self.head
																					for _ in range(index - 1 ):
																												_a     					=    temp.next
																					_a     					=    temp.next
																					_a     					=    temp.next.next
																					if index == len(self ) - 1:  # delete at tail
																												_a     					=    temp
														return delete_node.data







							def        __lowerCAmelCase      (  self	:  int )      ->							int:


														"""simple docstring"""


														return len(self ) == 0



def 		snake_case_   ():





							'''simple docstring'''


							_a     					=    CircularLinkedList()
							assert len(UpperCamelCase				) == 0
							assert circular_linked_list.is_empty() is True
							assert str(UpperCamelCase				) == ""

							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(UpperCamelCase				) == i
														circular_linked_list.insert_nth(UpperCamelCase			,						i + 1				)
							assert str(UpperCamelCase				) == "->".join(str(UpperCamelCase				) for i in range(1			,						6				)				)

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

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

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

							assert circular_linked_list.is_empty() is False


if __name__ == "__main__":
				import doctest

				doctest.testmod()







'''simple docstring'''


from typing import TYPE_CHECKING

from ...utils import OptionalDependencyNotAvailable, _LazyModule, is_torch_available, is_vision_available


_snake_case				:				int       							=		{'configuration_yolos': ['YOLOS_PRETRAINED_CONFIG_ARCHIVE_MAP', 'YolosConfig', 'YolosOnnxConfig']}

try:
				if not is_vision_available():
								raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
				pass
else:
				_snake_case				:				List[str]       							=		['YolosFeatureExtractor']
				_snake_case				:				Optional[int]       							=		['YolosImageProcessor']

try:
				if not is_torch_available():
								raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
				pass
else:
				_snake_case				:				Tuple       							=		[
				    'YOLOS_PRETRAINED_MODEL_ARCHIVE_LIST',
				    'YolosForObjectDetection',
				    'YolosModel',
				    'YolosPreTrainedModel',
				]


if TYPE_CHECKING:
				from .configuration_yolos import YOLOS_PRETRAINED_CONFIG_ARCHIVE_MAP, YolosConfig, YolosOnnxConfig

				try:
								if not is_vision_available():
												raise OptionalDependencyNotAvailable()
				except OptionalDependencyNotAvailable:
								pass
				else:
								from .feature_extraction_yolos import YolosFeatureExtractor
								from .image_processing_yolos import YolosImageProcessor

				try:
								if not is_torch_available():
												raise OptionalDependencyNotAvailable()
				except OptionalDependencyNotAvailable:
								pass
				else:
								from .modeling_yolos import (
								    YOLOS_PRETRAINED_MODEL_ARCHIVE_LIST,
								    YolosForObjectDetection,
								    YolosModel,
								    YolosPreTrainedModel,
								)


else:
				import sys

				_snake_case				:				Dict       							=		_LazyModule(__name__, globals()['__file__'], _import_structure, module_spec=__spec__)

