
'''simple docstring'''

class 					a_					:




       def __init__(       self				,				snake_case_					):
         _lowerCAmelCase    :					Dict							=   data
         _lowerCAmelCase    :					Optional[int]							=   None
         _lowerCAmelCase    :					Dict							=   None







       def __str__(       self					):
         return f'{self.data}'



class 					a_					:




       def __init__(       self					):
         _lowerCAmelCase    :					Optional[int]							=   None
         _lowerCAmelCase    :					Union[str, Any]							=   None




       def __iter__(       self					):
         _lowerCAmelCase    :					Tuple							=   self.head
         while node:
           yield node.data
           _lowerCAmelCase    :					List[str]							=   node.next




       def __str__(       self					):
         return "->".join([str(snake_case_					) for item in self]					)




       def __len__(       self					):
         return sum(1 for _ in self					)




       def 							__UpperCamelCase    (       self				,				snake_case_					):
         self.insert_at_nth(0				,				snake_case_					)




       def 							__UpperCamelCase    (       self				,				snake_case_					):
         self.insert_at_nth(len(self					)				,				snake_case_					)




       def 							__UpperCamelCase    (       self				,				snake_case_				,				snake_case_					):
         _lowerCAmelCase    :					Dict							=   len(self					)

         if not 0 <= index <= length:
           raise IndexError("""list index out of range"""					)
         _lowerCAmelCase    :					Dict							=   Node(snake_case_					)
         if self.head is None:
           _lowerCAmelCase    :					List[Any]							=   new_node
         elif index == 0:
           _lowerCAmelCase    :					int							=   new_node
           _lowerCAmelCase    :					Optional[Any]							=   self.head
           _lowerCAmelCase    :					Optional[int]							=   new_node
         elif index == length:
           _lowerCAmelCase    :					Optional[int]							=   new_node
           _lowerCAmelCase    :					str							=   self.tail
           _lowerCAmelCase    :					Union[str, Any]							=   new_node
         else:
           _lowerCAmelCase    :					Optional[int]							=   self.head
           for _ in range(0				,				snake_case_					):
             _lowerCAmelCase    :					Optional[Any]							=   temp.next
           _lowerCAmelCase    :					Optional[int]							=   new_node
           _lowerCAmelCase    :					Optional[Any]							=   temp.previous
           _lowerCAmelCase    :					Optional[Any]							=   temp
           _lowerCAmelCase    :					Optional[int]							=   new_node




       def 							__UpperCamelCase    (       self					):
         return self.delete_at_nth(0					)




       def 							__UpperCamelCase    (       self					):
         return self.delete_at_nth(len(self					) - 1					)




       def 							__UpperCamelCase    (       self				,				snake_case_					):
         _lowerCAmelCase    :					str							=   len(self					)

         if not 0 <= index <= length - 1:
           raise IndexError("""list index out of range"""					)
         _lowerCAmelCase    :					List[Any]							=   self.head  # default first node
         if length == 1:
           _lowerCAmelCase    :					Any							=   None
         elif index == 0:
           _lowerCAmelCase    :					int							=   self.head.next
           _lowerCAmelCase    :					Any							=   None
         elif index == length - 1:
           _lowerCAmelCase    :					Optional[int]							=   self.tail
           _lowerCAmelCase    :					Dict							=   self.tail.previous
           _lowerCAmelCase    :					Optional[Any]							=   None
         else:
           _lowerCAmelCase    :					List[str]							=   self.head
           for _ in range(0				,				snake_case_					):
             _lowerCAmelCase    :					Dict							=   temp.next
           _lowerCAmelCase    :					List[Any]							=   temp
           _lowerCAmelCase    :					Any							=   temp.previous
           _lowerCAmelCase    :					Optional[int]							=   temp.next
         return delete_node.data




       def 							__UpperCamelCase    (       self				,				snake_case_					):
         _lowerCAmelCase    :					Tuple							=   self.head

         while current.data != data:  # Find the position to delete
           if current.next:
             _lowerCAmelCase    :					Dict							=   current.next
           else:  # We have reached the end an no value matches
             raise ValueError("""No data matching given value"""					)

         if current == self.head:
           self.delete_head()

         elif current == self.tail:
           self.delete_tail()

         else:  # Before: 1 <--> 2(current) <--> 3
           _lowerCAmelCase    :					List[str]							=   current.next  # 1 --> 3
           _lowerCAmelCase    :					Any							=   current.previous  # 1 <--> 3
         return data







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



def 		_UpperCAmelCase			(					)      ->  None:
  _lowerCAmelCase    :					Union[str, Any]							=   DoublyLinkedList()
  assert linked_list.is_empty() is True
  assert str(_lowerCamelCase						) == ""

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

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

  for i in range(10						):
    assert len(_lowerCamelCase						) == i
    linked_list.insert_at_nth(_lowerCamelCase					, i + 1						)
  assert str(_lowerCamelCase						) == "->".join(str(_lowerCamelCase						) for i in range(1					, 11						)						)

  linked_list.insert_at_head(0						)
  linked_list.insert_at_tail(11						)
  assert str(_lowerCamelCase						) == "->".join(str(_lowerCamelCase						) for i in range(0					, 12						)						)

  assert linked_list.delete_head() == 0
  assert linked_list.delete_at_nth(9						) == 10
  assert linked_list.delete_tail() == 11
  assert len(_lowerCamelCase						) == 9
  assert str(_lowerCamelCase						) == "->".join(str(_lowerCamelCase						) for i in range(1					, 10						)						)


if __name__ == "__main__":
     from doctest import testmod

     testmod()




'''simple docstring'''

from typing import TYPE_CHECKING

from ...utils import (
    OptionalDependencyNotAvailable,
    _LazyModule,
    is_flax_available,
    is_tf_available,
    is_torch_available,
)


UpperCamelCase_            =    {"""configuration_gptj""": ["""GPTJ_PRETRAINED_CONFIG_ARCHIVE_MAP""", """GPTJConfig""", """GPTJOnnxConfig"""]}

try:
     if not is_torch_available():
          raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
     pass
else:
     UpperCamelCase_            =    [
         """GPTJ_PRETRAINED_MODEL_ARCHIVE_LIST""",
         """GPTJForCausalLM""",
         """GPTJForQuestionAnswering""",
         """GPTJForSequenceClassification""",
         """GPTJModel""",
         """GPTJPreTrainedModel""",
     ]

try:
     if not is_tf_available():
          raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
     pass
else:
     UpperCamelCase_            =    [
         """TFGPTJForCausalLM""",
         """TFGPTJForQuestionAnswering""",
         """TFGPTJForSequenceClassification""",
         """TFGPTJModel""",
         """TFGPTJPreTrainedModel""",
     ]

try:
     if not is_flax_available():
          raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
     pass
else:
     UpperCamelCase_            =    [
         """FlaxGPTJForCausalLM""",
         """FlaxGPTJModel""",
         """FlaxGPTJPreTrainedModel""",
     ]


if TYPE_CHECKING:
     from .configuration_gptj import GPTJ_PRETRAINED_CONFIG_ARCHIVE_MAP, GPTJConfig, GPTJOnnxConfig

     try:
          if not is_torch_available():
               raise OptionalDependencyNotAvailable()
     except OptionalDependencyNotAvailable:
          pass
     else:
          from .modeling_gptj import (
              GPTJ_PRETRAINED_MODEL_ARCHIVE_LIST,
              GPTJForCausalLM,
              GPTJForQuestionAnswering,
              GPTJForSequenceClassification,
              GPTJModel,
              GPTJPreTrainedModel,
          )

     try:
          if not is_tf_available():
               raise OptionalDependencyNotAvailable()
     except OptionalDependencyNotAvailable:
          pass
     else:
          from .modeling_tf_gptj import (
              TFGPTJForCausalLM,
              TFGPTJForQuestionAnswering,
              TFGPTJForSequenceClassification,
              TFGPTJModel,
              TFGPTJPreTrainedModel,
          )

     try:
          if not is_flax_available():
               raise OptionalDependencyNotAvailable()
     except OptionalDependencyNotAvailable:
          pass
     else:
          from .modeling_flax_gptj import FlaxGPTJForCausalLM, FlaxGPTJModel, FlaxGPTJPreTrainedModel

else:
     import sys

     UpperCamelCase_            =    _LazyModule(__name__, globals()["""__file__"""], _import_structure, module_spec=__spec__)


