


from __future__ import annotations

from collections.abc import Iterator
from typing import Any



class      __lowerCamelCase       :







       def __init__(       self:      Union[str, Any],A_:      Any ):






            '''simple docstring'''




            __UpperCamelCase      =       data
            __UpperCamelCase      =       None



class      __lowerCamelCase       :







       def __init__(       self:      Any ):






            '''simple docstring'''




            __UpperCamelCase      =       None
            __UpperCamelCase      =       None







       def __iter__(       self:      int ):






            '''simple docstring'''




            __UpperCamelCase      =       self.head
            while self.head:
                 yield node.data
                 __UpperCamelCase      =       node.next
                 if node == self.head:
                      break







       def __len__(       self:      str ):






            '''simple docstring'''




            return sum(1 for _ in self )







       def __repr__(       self:      Optional[Any] ):






            '''simple docstring'''




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







       def 						snake_case_     (       self:      Optional[Any],A_:      Any ):






            '''simple docstring'''




            self.insert_nth(len(self ),SCREAMING_SNAKE_CASE_ )







       def 						snake_case_     (       self:      str,A_:      Any ):






            '''simple docstring'''




            self.insert_nth(0,SCREAMING_SNAKE_CASE_ )







       def 						snake_case_     (       self:      List[str],A_:      int,A_:      Any ):






            '''simple docstring'''




            if index < 0 or index > len(self ):
                 raise IndexError('list index out of range.' )
            __UpperCamelCase      =       Node(SCREAMING_SNAKE_CASE_ )
            if self.head is None:
                 __UpperCamelCase      =       new_node  # first node points itself
                 __UpperCamelCase      =       __UpperCamelCase      =       new_node
            elif index == 0:  # insert at head
                 __UpperCamelCase      =       self.head
                 __UpperCamelCase      =       __UpperCamelCase      =       new_node
            else:
                 __UpperCamelCase      =       self.head
                 for _ in range(index - 1 ):
                      __UpperCamelCase      =       temp.next
                 __UpperCamelCase      =       temp.next
                 __UpperCamelCase      =       new_node
                 if index == len(self ) - 1:  # insert at tail
                      __UpperCamelCase      =       new_node







       def 						snake_case_     (       self:      int ):






            '''simple docstring'''




            return self.delete_nth(0 )







       def 						snake_case_     (       self:      str ):






            '''simple docstring'''




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







       def 						snake_case_     (       self:      Tuple,A_:      int = 0 ):






            '''simple docstring'''




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







       def 						snake_case_     (       self:      Union[str, Any] ):






            '''simple docstring'''




            return len(self ) == 0






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


     """simple docstring"""


     __UpperCamelCase      =       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()




import tempfile
import unittest

from make_student import create_student_by_copying_alternating_layers

from transformers import AutoConfig
from transformers.file_utils import cached_property
from transformers.testing_utils import require_torch


__a  			=					'sshleifer/bart-tiny-random'
__a  			=					'patrickvonplaten/t5-tiny-random'
@require_torch
class  lowercase__(				unittest.TestCase							):



	"""simple docstring"""




	@cached_property
	def 						_lowercase  (       self  :			Any       )       ->     Tuple:
					return AutoConfig.from_pretrained(SCREAMING_SNAKE_CASE_       )
	def 						_lowercase  (       self  :			int       )       ->     List[Any]:
					lowercase_  ,	*lowercase_       =					create_student_by_copying_alternating_layers(SCREAMING_SNAKE_CASE_       ,							tempfile.mkdtemp()       ,							e=1       ,							d=1       )
					self.assertEqual(student.config.num_hidden_layers       ,							1       )
	def 						_lowercase  (       self  :			Union[str, Any]       )       ->     Optional[int]:
					lowercase_  ,	*lowercase_       =					create_student_by_copying_alternating_layers(SCREAMING_SNAKE_CASE_       ,							tempfile.mkdtemp()       ,							e=1       ,							d=SCREAMING_SNAKE_CASE_       )
	def 						_lowercase  (       self  :			List[str]       )       ->     List[Any]:
					lowercase_  ,	*lowercase_       =					create_student_by_copying_alternating_layers(SCREAMING_SNAKE_CASE_       ,							tempfile.mkdtemp()       ,							e=1       ,							d=SCREAMING_SNAKE_CASE_       )
					self.assertEqual(student.config.encoder_layers       ,							1       )
					self.assertEqual(student.config.decoder_layers       ,							self.teacher_config.encoder_layers       )
	def 						_lowercase  (       self  :			List[Any]       )       ->     List[Any]:
					lowercase_  ,	*lowercase_       =					create_student_by_copying_alternating_layers(SCREAMING_SNAKE_CASE_       ,							tempfile.mkdtemp()       ,							e=1       ,							d=1       )
					self.assertEqual(student.config.encoder_layers       ,							1       )
					self.assertEqual(student.config.decoder_layers       ,							1       )




	def 						_lowercase  (       self  :			Union[str, Any]       )       ->     Optional[int]:
					with self.assertRaises(SCREAMING_SNAKE_CASE_       ):
									create_student_by_copying_alternating_layers(SCREAMING_SNAKE_CASE_       ,							tempfile.mkdtemp()       ,							e=SCREAMING_SNAKE_CASE_       ,							d=SCREAMING_SNAKE_CASE_       )




