



"""simple docstring"""

class SCREAMING_SNAKE_CASE__					:



      def __init__(self						,     _lowercase						,     _lowercase=None						,     _lowercase=None							):





             '''simple docstring'''

             __a		:		Union[str, Any]									=       data
             __a		:		str									=       previous
             __a		:		Optional[int]									=       next_node



      def __str__(self							):





             '''simple docstring'''

             return F'''{self.data}'''



      def     lowerCAmelCase__(self							):





             '''simple docstring'''

             return self.data



      def     lowerCAmelCase__(self							):





             '''simple docstring'''

             return self.next





      def     lowerCAmelCase__(self							):





             '''simple docstring'''

             return self.previous







class SCREAMING_SNAKE_CASE__					:



      def __init__(self						,     _lowercase							):





             '''simple docstring'''

             __a		:		str									=       head



      def __iter__(self							):





             '''simple docstring'''

             return self





      def     lowerCAmelCase__(self							):





             '''simple docstring'''

             if not self.current:
                    raise StopIteration
             else:
                    __a		:		Dict									=       self.current.get_data()
                    __a		:		Union[str, Any]									=       self.current.get_next()
                    return value







class SCREAMING_SNAKE_CASE__					:



      def __init__(self							):





             '''simple docstring'''

             __a		:		Optional[Any]									=       None  # First node in list
             __a		:		Union[str, Any]									=       None  # Last node in list



      def __str__(self							):





             '''simple docstring'''

             __a		:		Tuple									=       self.head
             __a		:		Any									=       []
             while current is not None:
                    nodes.append(current.get_data()							)
                    __a		:		Optional[Any]									=       current.get_next()
             return " ".join(str(__snake_case							) for node in nodes							)



      def __contains__(self						,     _lowercase							):





             '''simple docstring'''

             __a		:		Optional[int]									=       self.head
             while current:
                    if current.get_data() == value:
                           return True
                    __a		:		Union[str, Any]									=       current.get_next()
             return False



      def __iter__(self							):





             '''simple docstring'''

             return LinkedListIterator(self.head							)



      def     lowerCAmelCase__(self							):





             '''simple docstring'''

             if self.head:
                    return self.head.get_data()
             return None



      def     lowerCAmelCase__(self							):





             '''simple docstring'''

             if self.tail:
                    return self.tail.get_data()
             return None



      def     lowerCAmelCase__(self						,     _lowercase							):





             '''simple docstring'''

             if self.head is None:
                    __a		:		Optional[int]									=       node
                    __a		:		Dict									=       node
             else:
                    self.insert_before_node(self.head						,     __snake_case							)



      def     lowerCAmelCase__(self						,     _lowercase							):





             '''simple docstring'''

             if self.head is None:
                    self.set_head(__snake_case							)
             else:
                    self.insert_after_node(self.tail						,     __snake_case							)



      def     lowerCAmelCase__(self						,     _lowercase							):





             '''simple docstring'''

             __a		:		List[Any]									=       Node(__snake_case							)
             if self.head is None:
                    self.set_head(__snake_case							)
             else:
                    self.set_tail(__snake_case							)



      def     lowerCAmelCase__(self						,     _lowercase						,     _lowercase							):





             '''simple docstring'''

             __a		:		Any									=       node
             __a		:		Dict									=       node.previous

             if node.get_previous() is None:
                    __a		:		Optional[Any]									=       node_to_insert
             else:
                    __a		:		Optional[Any]									=       node_to_insert

             __a		:		int									=       node_to_insert



      def     lowerCAmelCase__(self						,     _lowercase						,     _lowercase							):





             '''simple docstring'''

             __a		:		Dict									=       node
             __a		:		Optional[int]									=       node.next

             if node.get_next() is None:
                    __a		:		Union[str, Any]									=       node_to_insert
             else:
                    __a		:		Dict									=       node_to_insert

             __a		:		List[str]									=       node_to_insert



      def     lowerCAmelCase__(self						,     _lowercase						,     _lowercase							):





             '''simple docstring'''

             __a		:		Tuple									=       1
             __a		:		int									=       Node(__snake_case							)
             __a		:		List[Any]									=       self.head
             while node:
                    if current_position == position:
                           self.insert_before_node(__snake_case						,     __snake_case							)
                           return
                    current_position += 1
                    __a		:		str									=       node.next
             self.insert_after_node(self.tail						,     __snake_case							)



      def     lowerCAmelCase__(self						,     _lowercase							):





             '''simple docstring'''

             __a		:		Dict									=       self.head
             while node:
                    if node.get_data() == item:
                           return node
                    __a		:		List[Any]									=       node.get_next()
             raise Exception("""Node not found"""							)



      def     lowerCAmelCase__(self						,     _lowercase							):





             '''simple docstring'''

             if (node := self.get_node(__snake_case							)) is not None:
                    if node == self.head:
                           __a		:		Optional[Any]									=       self.head.get_next()

                    if node == self.tail:
                           __a		:		Optional[Any]									=       self.tail.get_previous()

                    self.remove_node_pointers(__snake_case							)



      @staticmethod
      def     lowerCAmelCase__(_lowercase							):





             '''simple docstring'''

             if node.get_next():
                    __a		:		Any									=       node.previous

             if node.get_previous():
                    __a		:		Any									=       node.next

             __a		:		Any									=       None
             __a		:		Tuple									=       None





      def     lowerCAmelCase__(self							):





             '''simple docstring'''

             return self.head is None







def       __magic_name__    (   ):
       pass


if __name__ == "__main__":
 import doctest

 doctest.testmod()






"""simple docstring"""

from typing import TYPE_CHECKING

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


lowercase__			   =  {
    "configuration_ernie": ["ERNIE_PRETRAINED_CONFIG_ARCHIVE_MAP", "ErnieConfig", "ErnieOnnxConfig"],
}

try:
	if not is_torch_available():
		raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
	pass
else:
	lowercase__			   =  [
	    "ERNIE_PRETRAINED_MODEL_ARCHIVE_LIST",
	    "ErnieForCausalLM",
	    "ErnieForMaskedLM",
	    "ErnieForMultipleChoice",
	    "ErnieForNextSentencePrediction",
	    "ErnieForPreTraining",
	    "ErnieForQuestionAnswering",
	    "ErnieForSequenceClassification",
	    "ErnieForTokenClassification",
	    "ErnieModel",
	    "ErniePreTrainedModel",
	]

if TYPE_CHECKING:
	from .configuration_ernie import ERNIE_PRETRAINED_CONFIG_ARCHIVE_MAP, ErnieConfig, ErnieOnnxConfig

	try:
		if not is_torch_available():
			raise OptionalDependencyNotAvailable()
	except OptionalDependencyNotAvailable:
		pass
	else:
		from .modeling_ernie import (
		    ERNIE_PRETRAINED_MODEL_ARCHIVE_LIST,
		    ErnieForCausalLM,
		    ErnieForMaskedLM,
		    ErnieForMultipleChoice,
		    ErnieForNextSentencePrediction,
		    ErnieForPreTraining,
		    ErnieForQuestionAnswering,
		    ErnieForSequenceClassification,
		    ErnieForTokenClassification,
		    ErnieModel,
		    ErniePreTrainedModel,
		)

else:
	import sys

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

