





"""simple docstring"""



from __future__ import annotations

from collections.abc import Iterator
from typing import Any






class 						__snake_case   :





 """simple docstring"""


 def __init__(       self   ,		__lowerCamelCase    ):



     '''simple docstring'''




     __A       :		Any							=	data
     __A       :		Node | None							=	None






class 						__snake_case   :





 """simple docstring"""


 def __init__(       self    ):



     '''simple docstring'''




     __A       :		Tuple							=	None
     __A       :		Optional[int]							=	None

 def __iter__(       self    ):



     '''simple docstring'''




     __A       :		Optional[int]							=	self.head
     while self.head:
         yield node.data
         __A       :		Optional[Any]							=	node.next
         if node == self.head:
             break

 def __len__(       self    ):



     '''simple docstring'''




     return sum(1 for _ in self    )

 def __repr__(       self    ):



     '''simple docstring'''




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

 def    UpperCamelCase__(       self   ,		__lowerCamelCase    ):



     '''simple docstring'''




     self.insert_nth(len(self    )   ,		snake_case__    )

 def    UpperCamelCase__(       self   ,		__lowerCamelCase    ):



     '''simple docstring'''




     self.insert_nth(0   ,		snake_case__    )

 def    UpperCamelCase__(       self   ,		__lowerCamelCase   ,		__lowerCamelCase    ):



     '''simple docstring'''




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

 def    UpperCamelCase__(       self    ):



     '''simple docstring'''




     return self.delete_nth(0    )

 def    UpperCamelCase__(       self    ):



     '''simple docstring'''




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

 def    UpperCamelCase__(       self   ,		__lowerCamelCase = 0    ):



     '''simple docstring'''




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







 def    UpperCamelCase__(       self    ):



     '''simple docstring'''




     return len(self    ) == 0







def 						__lowercase	(  )  ->None:



    '''simple docstring'''







    __A       :		str							=	CircularLinkedList()
    assert len(snake_case_		) == 0
    assert circular_linked_list.is_empty() is True
    assert str(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(snake_case_		) == i
        circular_linked_list.insert_nth(snake_case_							,i + 1		)
    assert str(snake_case_		) == "->".join(str(snake_case_		) for i in range(1							,6		)		)

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

    assert circular_linked_list.delete_front() == 0
    assert circular_linked_list.delete_tail() == 6
    assert str(snake_case_		) == "->".join(str(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(snake_case_		) == "->".join(str(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"""



import unittest

from transformers import is_flax_available
from transformers.testing_utils import require_flax, require_sentencepiece, require_tokenizers, require_torch, slow


if is_flax_available():
 import optax
 from flax.training.common_utils import onehot

 from transformers import AutoTokenizer, FlaxMTaForConditionalGeneration
 from transformers.models.ta.modeling_flax_ta import shift_tokens_right




@require_torch
@require_sentencepiece
@require_tokenizers
@require_flax
class 			lowerCAmelCase__			(    unittest.TestCase   ):
   @slow
   def       __a							(		self      :	List[str]							):


        '''simple docstring'''
        UpperCAmelCase__						:    Union[str, Any]							=							FlaxMTaForConditionalGeneration.from_pretrained("google/mt5-small"							)
        UpperCAmelCase__						:    str							=							AutoTokenizer.from_pretrained("google/mt5-small"							)

        UpperCAmelCase__						:    str							=							tokenizer("Hello there"							,			return_tensors="np"							).input_ids
        UpperCAmelCase__						:    Optional[Any]							=							tokenizer("Hi I am"							,			return_tensors="np"							).input_ids

        UpperCAmelCase__						:    Any							=							shift_tokens_right(snake_case__							,			model.config.pad_token_id							,			model.config.decoder_start_token_id							)

        UpperCAmelCase__						:    Any							=							model(snake_case__							,			decoder_input_ids=snake_case__							).logits
        UpperCAmelCase__						:    Any							=							optax.softmax_cross_entropy(snake_case__							,			onehot(snake_case__							,			logits.shape[-1]							)							).mean()

        UpperCAmelCase__						:    List[str]							=							-(labels.shape[-1] * loss.item())

        UpperCAmelCase__						:    Dict							=							-84.9127
        self.assertTrue(abs(mtf_score - EXPECTED_SCORE							) < 1e-4							)


