






'''simple docstring'''







from typing import TYPE_CHECKING

from ...utils import OptionalDependencyNotAvailable, _LazyModule, is_torch_available


_A     :      str   					={
    '''configuration_bigbird_pegasus''': [
        '''BIGBIRD_PEGASUS_PRETRAINED_CONFIG_ARCHIVE_MAP''',
        '''BigBirdPegasusConfig''',
        '''BigBirdPegasusOnnxConfig''',
    ],
}

try:
			if not is_torch_available():
						raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
			pass
else:
			_A     :      str   					=[
			    '''BIGBIRD_PEGASUS_PRETRAINED_MODEL_ARCHIVE_LIST''',
			    '''BigBirdPegasusForCausalLM''',
			    '''BigBirdPegasusForConditionalGeneration''',
			    '''BigBirdPegasusForQuestionAnswering''',
			    '''BigBirdPegasusForSequenceClassification''',
			    '''BigBirdPegasusModel''',
			    '''BigBirdPegasusPreTrainedModel''',
			]


if TYPE_CHECKING:
			from .configuration_bigbird_pegasus import (
			    BIGBIRD_PEGASUS_PRETRAINED_CONFIG_ARCHIVE_MAP,
			    BigBirdPegasusConfig,
			    BigBirdPegasusOnnxConfig,
			)

			try:
						if not is_torch_available():
									raise OptionalDependencyNotAvailable()
			except OptionalDependencyNotAvailable:
						pass
			else:
						from .modeling_bigbird_pegasus import (
						    BIGBIRD_PEGASUS_PRETRAINED_MODEL_ARCHIVE_LIST,
						    BigBirdPegasusForCausalLM,
						    BigBirdPegasusForConditionalGeneration,
						    BigBirdPegasusForQuestionAnswering,
						    BigBirdPegasusForSequenceClassification,
						    BigBirdPegasusModel,
						    BigBirdPegasusPreTrainedModel,
						)


else:
			import sys

			_A     :      Optional[Any]   					=_LazyModule(__name__, globals()['''__file__'''], _import_structure, module_spec=__spec__)









'''simple docstring'''







from __future__ import annotations

from typing import Any

class _lowercase     (    _lowercase		):
							pass



class _lowercase     :




							def __init__(							self:    Optional[int]      ,							UpperCamelCase__:    Any					):
														lowerCamelCase__ :     Any	  =	data
														lowerCamelCase__ :     Node | None	  =	None




							def __iter__(							self:    List[Any]					):
														lowerCamelCase__ :     Optional[Any]	  =	self
														lowerCamelCase__ :     int	  =	[]
														while node:
																					if node in visited:
																												raise ContainsLoopError
																					visited.append(UpperCamelCase__					)
																					yield node.data
																					lowerCamelCase__ :     List[str]	  =	node.next_node




							@property
							def 		lowerCamelCase_    (							self:    Optional[Any]					):
														try:
																					list(self					)
																					return False
														except ContainsLoopError:
																					return True


if __name__ == "__main__":
			_A     :      Any   					=Node(1)
			_A     :      Optional[int]   					=Node(2)
			_A     :      Dict   					=Node(3)
			_A     :      Optional[Any]   					=Node(4)
			print(root_node.has_loop)  # False
			_A     :      Any   					=root_node.next_node
			print(root_node.has_loop)  # True

			_A     :      Dict   					=Node(5)
			_A     :      Union[str, Any]   					=Node(6)
			_A     :      str   					=Node(5)
			_A     :      int   					=Node(6)
			print(root_node.has_loop)  # False

			_A     :      Optional[Any]   					=Node(1)
			print(root_node.has_loop)  # False

