



'''simple docstring'''

from __future__ import annotations

from collections.abc import Iterator
from typing import Any


class 	a__     :


	def __init__(self : Tuple,					__UpperCAmelCase : Any      )     ->			int:

					"""simple docstring"""

					SCREAMING_SNAKE_CASE  :						Any      					= data
					SCREAMING_SNAKE_CASE  :						Node | None      					= None



class 	a__     :


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

					"""simple docstring"""

					SCREAMING_SNAKE_CASE  :						Optional[Any]      					= None
					SCREAMING_SNAKE_CASE  :						str      					= None


	def __iter__(self : List[Any]      )     ->			Iterator[Any]:

					"""simple docstring"""

					SCREAMING_SNAKE_CASE  :						Tuple      					= self.head
					while self.head:
									yield node.data
									SCREAMING_SNAKE_CASE  :						Dict      					= node.next
									if node == self.head:
													break


	def __len__(self : Dict      )     ->			int:

					"""simple docstring"""

					return sum(1 for _ in self      )


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

					"""simple docstring"""

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


	def 				lowercase__  (self : Optional[Any],					__UpperCAmelCase : Any      )     ->			None:

					"""simple docstring"""

					self.insert_nth(len(self      ),					__UpperCAmelCase      )


	def 				lowercase__  (self : Optional[int],					__UpperCAmelCase : Any      )     ->			None:

					"""simple docstring"""

					self.insert_nth(0,					__UpperCAmelCase      )


	def 				lowercase__  (self : str,					__UpperCAmelCase : int,					__UpperCAmelCase : Any      )     ->			None:

					"""simple docstring"""

					if index < 0 or index > len(self      ):
									raise IndexError('''list index out of range.'''      )
					SCREAMING_SNAKE_CASE  :						int      					= Node(__UpperCAmelCase      )
					if self.head is None:
									SCREAMING_SNAKE_CASE  :						List[Any]      					= new_node  # first node points itself
									SCREAMING_SNAKE_CASE  :						Union[str, Any]      					= new_node
					elif index == 0:  # insert at head
									SCREAMING_SNAKE_CASE  :						str      					= self.head
									SCREAMING_SNAKE_CASE  :						str      					= new_node
					else:
									SCREAMING_SNAKE_CASE  :						List[str]      					= self.head
									for _ in range(index - 1      ):
													SCREAMING_SNAKE_CASE  :						Dict      					= temp.next
									SCREAMING_SNAKE_CASE  :						str      					= temp.next
									SCREAMING_SNAKE_CASE  :						Optional[int]      					= new_node
									if index == len(self      ) - 1:  # insert at tail
													SCREAMING_SNAKE_CASE  :						Tuple      					= new_node


	def 				lowercase__  (self : str      )     ->			str:

					"""simple docstring"""

					return self.delete_nth(0      )


	def 				lowercase__  (self : Dict      )     ->			Any:

					"""simple docstring"""

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


	def 				lowercase__  (self : List[str],					__UpperCAmelCase : int = 0      )     ->			Any:

					"""simple docstring"""

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






	def 				lowercase__  (self : Optional[Any]      )     ->			bool:

					"""simple docstring"""

					return len(self      ) == 0






def       __lowercase  ():
				SCREAMING_SNAKE_CASE  :						int      					= CircularLinkedList()
				assert len(_SCREAMING_SNAKE_CASE       ) == 0
				assert circular_linked_list.is_empty() is True
				assert str(_SCREAMING_SNAKE_CASE       ) == ""

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

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

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

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

				assert circular_linked_list.is_empty() is False


if __name__ == "__main__":
	import doctest

	doctest.testmod()









'''simple docstring'''

from ...configuration_utils import PretrainedConfig
from ...utils import logging


snake_case_			=     logging.get_logger(__name__)

snake_case_			=     {
    """facebook/nllb-moe-54B""": """https://huggingface.co/facebook/nllb-moe-54b/resolve/main/config.json""",
}


class 	a__     (				_lowercase	):
	__magic_name__		:    Optional[Any]	    =     "nllb-moe"
	__magic_name__		:    Optional[Any]	    =     ["past_key_values"]
	__magic_name__		:    Optional[int]	    =     {"num_attention_heads": "encoder_attention_heads", "hidden_size": "d_model"}


	def __init__(self : int,					__UpperCAmelCase : Tuple=128112,					__UpperCAmelCase : Any=1024,					__UpperCAmelCase : Optional[Any]=12,					__UpperCAmelCase : Optional[int]=4096,					__UpperCAmelCase : Any=16,					__UpperCAmelCase : Any=12,					__UpperCAmelCase : Optional[Any]=4096,					__UpperCAmelCase : Optional[int]=16,					__UpperCAmelCase : List[Any]=0.05,					__UpperCAmelCase : Dict=0.05,					__UpperCAmelCase : Dict=True,					__UpperCAmelCase : List[Any]=True,					__UpperCAmelCase : Any="relu",					__UpperCAmelCase : Union[str, Any]=1024,					__UpperCAmelCase : Optional[int]=0.1,					__UpperCAmelCase : Tuple=0.1,					__UpperCAmelCase : List[Any]=0.0,					__UpperCAmelCase : Optional[int]=0.02,					__UpperCAmelCase : Tuple=2,					__UpperCAmelCase : int=True,					__UpperCAmelCase : int=False,					__UpperCAmelCase : int="float32",					__UpperCAmelCase : Optional[Any]=False,					__UpperCAmelCase : List[str]=128,					__UpperCAmelCase : Dict=64,					__UpperCAmelCase : Dict=4,					__UpperCAmelCase : Optional[Any]=4,					__UpperCAmelCase : Optional[Any]=0.001,					__UpperCAmelCase : Optional[Any]=0.001,					__UpperCAmelCase : Optional[Any]="all",					__UpperCAmelCase : List[str]=False,					__UpperCAmelCase : Dict=False,					__UpperCAmelCase : Any=1.0,					__UpperCAmelCase : Dict=0.2,					__UpperCAmelCase : int=1,					__UpperCAmelCase : Union[str, Any]=0,					__UpperCAmelCase : Any=2,					__UpperCAmelCase : Union[str, Any]=False,					**__UpperCAmelCase : Dict,					)     ->			List[Any]:

					"""simple docstring"""

					SCREAMING_SNAKE_CASE  :						Any      					= vocab_size
					SCREAMING_SNAKE_CASE  :						int      					= max_position_embeddings
					SCREAMING_SNAKE_CASE  :						Optional[int]      					= d_model
					SCREAMING_SNAKE_CASE  :						Dict      					= encoder_ffn_dim
					SCREAMING_SNAKE_CASE  :						int      					= encoder_layers
					SCREAMING_SNAKE_CASE  :						str      					= encoder_attention_heads
					SCREAMING_SNAKE_CASE  :						Optional[Any]      					= decoder_ffn_dim
					SCREAMING_SNAKE_CASE  :						str      					= decoder_layers
					SCREAMING_SNAKE_CASE  :						Dict      					= decoder_attention_heads
					SCREAMING_SNAKE_CASE  :						Dict      					= dropout
					SCREAMING_SNAKE_CASE  :						Optional[Any]      					= attention_dropout
					SCREAMING_SNAKE_CASE  :						Dict      					= activation_dropout
					SCREAMING_SNAKE_CASE  :						List[str]      					= activation_function
					SCREAMING_SNAKE_CASE  :						Union[str, Any]      					= init_std
					SCREAMING_SNAKE_CASE  :						Any      					= encoder_layerdrop
					SCREAMING_SNAKE_CASE  :						Optional[int]      					= decoder_layerdrop
					SCREAMING_SNAKE_CASE  :						Dict      					= use_cache
					SCREAMING_SNAKE_CASE  :						Optional[Any]      					= encoder_layers
					SCREAMING_SNAKE_CASE  :						Optional[Any]      					= scale_embedding  # scale factor will be sqrt(d_model) if True
					SCREAMING_SNAKE_CASE  :						List[str]      					= router_z_loss_coef
					SCREAMING_SNAKE_CASE  :						List[str]      					= router_aux_loss_coef
					SCREAMING_SNAKE_CASE  :						int      					= decoder_sparse_step
					SCREAMING_SNAKE_CASE  :						Union[str, Any]      					= encoder_sparse_step
					SCREAMING_SNAKE_CASE  :						Union[str, Any]      					= num_experts
					SCREAMING_SNAKE_CASE  :						List[Any]      					= expert_capacity
					SCREAMING_SNAKE_CASE  :						Optional[Any]      					= router_bias
					if router_dtype not in ["float32", "float16", "bfloat16"]:
									raise ValueError(F'''`router_dtype` must be one of \'float32\', \'float16\' or \'bfloat16\', got {router_dtype}'''      )
					SCREAMING_SNAKE_CASE  :						Union[str, Any]      					= router_dtype

					SCREAMING_SNAKE_CASE  :						int      					= router_ignore_padding_tokens
					SCREAMING_SNAKE_CASE  :						Dict      					= batch_prioritized_routing
					SCREAMING_SNAKE_CASE  :						Dict      					= second_expert_policy
					SCREAMING_SNAKE_CASE  :						Tuple      					= normalize_router_prob_before_dropping
					SCREAMING_SNAKE_CASE  :						List[str]      					= moe_eval_capacity_token_fraction
					SCREAMING_SNAKE_CASE  :						List[Any]      					= moe_token_dropout
					SCREAMING_SNAKE_CASE  :						List[Any]      					= output_router_logits
					super().__init__(
					    pad_token_id=__UpperCAmelCase,					bos_token_id=__UpperCAmelCase,					eos_token_id=__UpperCAmelCase,					is_encoder_decoder=__UpperCAmelCase,					decoder_start_token_id=__UpperCAmelCase,					**__UpperCAmelCase,					)




