






from typing import Any







class 				UpperCAmelCase_  :




     def __init__(				self	,						_lowerCAmelCase		):
          UpperCAmelCase__      :  Tuple				      =			data
          UpperCAmelCase__      :  str				      =			None




     def __repr__(				self		):
          return f"Node({self.data})"







class 				UpperCAmelCase_  :




     def __init__(				self		):
          UpperCAmelCase__      :  Union[str, Any]				      =			None




     def __iter__(				self		):
          UpperCAmelCase__      :  List[str]				      =			self.head
          while node:
               yield node.data
               UpperCAmelCase__      :  List[str]				      =			node.next




     def __len__(				self		):
          return sum(1 for _ in self		)




     def __repr__(				self		):
          return "->".join([str(_lowerCAmelCase		) for item in self]		)




     def __getitem__(				self	,						_lowerCAmelCase		):
          if not 0 <= index < len(self		):
               raise ValueError("""list index out of range."""		)
          for i, node in enumerate(self		):
               if i == index:
                    return node
          return None




     def __setitem__(				self	,						_lowerCAmelCase	,						_lowerCAmelCase		):
          if not 0 <= index < len(self		):
               raise ValueError("""list index out of range."""		)
          UpperCAmelCase__      :  Optional[int]				      =			self.head
          for _ in range(_lowerCAmelCase		):
               UpperCAmelCase__      :  Any				      =			current.next
          UpperCAmelCase__      :  Dict				      =			data




     def   __UpperCAmelCase  (				self	,						_lowerCAmelCase		):
          self.insert_nth(len(self		)	,						_lowerCAmelCase		)




     def   __UpperCAmelCase  (				self	,						_lowerCAmelCase		):
          self.insert_nth(0	,						_lowerCAmelCase		)




     def   __UpperCAmelCase  (				self	,						_lowerCAmelCase	,						_lowerCAmelCase		):
          if not 0 <= index <= len(self		):
               raise IndexError("""list index out of range"""		)
          UpperCAmelCase__      :  Union[str, Any]				      =			Node(_lowerCAmelCase		)
          if self.head is None:
               UpperCAmelCase__      :  int				      =			new_node
          elif index == 0:
               UpperCAmelCase__      :  str				      =			self.head  # link new_node to head
               UpperCAmelCase__      :  Dict				      =			new_node
          else:
               UpperCAmelCase__      :  List[Any]				      =			self.head
               for _ in range(index - 1		):
                    UpperCAmelCase__      :  List[str]				      =			temp.next
               UpperCAmelCase__      :  Optional[int]				      =			temp.next
               UpperCAmelCase__      :  Dict				      =			new_node




     def   __UpperCAmelCase  (				self		):  # print every node data
          print(self		)




     def   __UpperCAmelCase  (				self		):
          return self.delete_nth(0		)




     def   __UpperCAmelCase  (				self		):  # delete from tail
          return self.delete_nth(len(self		) - 1		)




     def   __UpperCAmelCase  (				self	,						_lowerCAmelCase = 0		):
          if not 0 <= index <= len(self		) - 1:  # test if index is valid
               raise IndexError("""List index out of range."""		)
          UpperCAmelCase__      :  List[Any]				      =			self.head  # default first node
          if index == 0:
               UpperCAmelCase__      :  Union[str, Any]				      =			self.head.next
          else:
               UpperCAmelCase__      :  Optional[Any]				      =			self.head
               for _ in range(index - 1		):
                    UpperCAmelCase__      :  Optional[Any]				      =			temp.next
               UpperCAmelCase__      :  Union[str, Any]				      =			temp.next
               UpperCAmelCase__      :  List[Any]				      =			temp.next.next
          return delete_node.data




     def   __UpperCAmelCase  (				self		):
          return self.head is None




     def   __UpperCAmelCase  (				self		):
          UpperCAmelCase__      :  int				      =			None
          UpperCAmelCase__      :  Optional[Any]				      =			self.head

          while current:
               # Store the current node's next node.
               UpperCAmelCase__      :  List[Any]				      =			current.next
               # Make the current node's next point backwards
               UpperCAmelCase__      :  Optional[Any]				      =			prev
               # Make the previous node be the current node
               UpperCAmelCase__      :  int				      =			current
               # Make the current node the next node (to progress iteration)
               UpperCAmelCase__      :  Dict				      =			next_node
          # Return prev in order to put the head at the end
          UpperCAmelCase__      :  str				      =			prev





def  _lowerCamelCase						(						) ->			None:

     '''simple docstring'''
     UpperCAmelCase__      :  Dict				      =			LinkedList()
     assert linked_list.is_empty() is True
     assert str(__lowerCamelCase       ) == ""

     try:
          linked_list.delete_head()
          raise AssertionError  # This should not happen.
     except IndexError:
          assert True  # This should happen.

     try:
          linked_list.delete_tail()
          raise AssertionError  # This should not happen.
     except IndexError:
          assert True  # This should happen.

     for i in range(10       ):
          assert len(__lowerCamelCase       ) == i
          linked_list.insert_nth(__lowerCamelCase ,							i + 1       )
     assert str(__lowerCamelCase       ) == "->".join(str(__lowerCamelCase       ) for i in range(1 ,							11       )       )

     linked_list.insert_head(0       )
     linked_list.insert_tail(11       )
     assert str(__lowerCamelCase       ) == "->".join(str(__lowerCamelCase       ) for i in range(0 ,							12       )       )

     assert linked_list.delete_head() == 0
     assert linked_list.delete_nth(9       ) == 10
     assert linked_list.delete_tail() == 11
     assert len(__lowerCamelCase       ) == 9
     assert str(__lowerCamelCase       ) == "->".join(str(__lowerCamelCase       ) for i in range(1 ,							10       )       )

     assert all(linked_list[i] == i + 1 for i in range(0 ,							9       )       ) is True

     for i in range(0 ,							9       ):
          UpperCAmelCase__      :  Any				      =			-i
     assert all(linked_list[i] == -i for i in range(0 ,							9       )       ) is True

     linked_list.reverse()
     assert str(__lowerCamelCase       ) == "->".join(str(__lowerCamelCase       ) for i in range(-8 ,							1       )       )





def  _lowerCamelCase						(						) ->			None:

     '''simple docstring'''
     UpperCAmelCase__      :  Any				      =			[
         -9,
         100,
         Node(7734_5112       ),
         """dlrow olleH""",
         7,
         5555,
         0,
         -192.55_555,
         """Hello, world!""",
         77.9,
         Node(10       ),
         None,
         None,
         12.20,
     ]
     UpperCAmelCase__      :  List[str]				      =			LinkedList()

     for i in test_input:
          linked_list.insert_tail(__lowerCamelCase       )

     # Check if it's empty or not
     assert linked_list.is_empty() is False
     assert (
         str(__lowerCamelCase       ) == "-9->100->Node(77345112)->dlrow olleH->7->5555->0->"
         "-192.55555->Hello, world!->77.9->Node(10)->None->None->12.2"
     )

     # Delete the head
     UpperCAmelCase__      :  Any				      =			linked_list.delete_head()
     assert result == -9
     assert (
         str(__lowerCamelCase       ) == "100->Node(77345112)->dlrow olleH->7->5555->0->-192.55555->"
         "Hello, world!->77.9->Node(10)->None->None->12.2"
     )

     # Delete the tail
     UpperCAmelCase__      :  Tuple				      =			linked_list.delete_tail()
     assert result == 12.2
     assert (
         str(__lowerCamelCase       ) == "100->Node(77345112)->dlrow olleH->7->5555->0->-192.55555->"
         "Hello, world!->77.9->Node(10)->None->None"
     )

     # Delete a node in specific location in linked list
     UpperCAmelCase__      :  str				      =			linked_list.delete_nth(10       )
     assert result is None
     assert (
         str(__lowerCamelCase       ) == "100->Node(77345112)->dlrow olleH->7->5555->0->-192.55555->"
         "Hello, world!->77.9->Node(10)->None"
     )

     # Add a Node instance to its head
     linked_list.insert_head(Node("""Hello again, world!"""       )       )
     assert (
         str(__lowerCamelCase       )
         == "Node(Hello again, world!)->100->Node(77345112)->dlrow olleH->"
         "7->5555->0->-192.55555->Hello, world!->77.9->Node(10)->None"
     )

     # Add None to its tail
     linked_list.insert_tail(__lowerCamelCase       )
     assert (
         str(__lowerCamelCase       )
         == "Node(Hello again, world!)->100->Node(77345112)->dlrow olleH->"
         "7->5555->0->-192.55555->Hello, world!->77.9->Node(10)->None->None"
     )

     # Reverse the linked list
     linked_list.reverse()
     assert (
         str(__lowerCamelCase       )
         == "None->None->Node(10)->77.9->Hello, world!->-192.55555->0->5555->"
         "7->dlrow olleH->Node(77345112)->100->Node(Hello again, world!)"
     )





def  _lowerCamelCase						(						) ->			List[str]:

     '''simple docstring'''
     from doctest import testmod

     testmod()

     UpperCAmelCase__      :  Optional[Any]				      =			LinkedList()
     linked_list.insert_head(input("""Inserting 1st at head """       ).strip()       )
     linked_list.insert_head(input("""Inserting 2nd at head """       ).strip()       )
     print("""\nPrint list:"""       )
     linked_list.print_list()
     linked_list.insert_tail(input("""\nInserting 1st at tail """       ).strip()       )
     linked_list.insert_tail(input("""Inserting 2nd at tail """       ).strip()       )
     print("""\nPrint list:"""       )
     linked_list.print_list()
     print("""\nDelete head"""       )
     linked_list.delete_head()
     print("""Delete tail"""       )
     linked_list.delete_tail()
     print("""\nPrint list:"""       )
     linked_list.print_list()
     print("""\nReverse linked list"""       )
     linked_list.reverse()
     print("""\nPrint list:"""       )
     linked_list.print_list()
     print("""\nString representation of linked list:"""       )
     print(__lowerCamelCase       )
     print("""\nReading/changing Node data using indexing:"""       )
     print(F"Element at Position 1: {linked_list[1]}"       )
     UpperCAmelCase__      :  List[Any]				      =			input("""Enter New Value: """       ).strip()
     print("""New list:"""       )
     print(__lowerCamelCase       )
     print(F"length of linked_list is : {len(__lowerCamelCase       )}"       )


if __name__ == "__main__":
      main()










"""simple docstring"""


import unittest

from transformers import is_torch_available
from transformers.testing_utils import require_torch


if is_torch_available():
	import torch

	from transformers.activations import gelu_new, gelu_python, get_activation
@require_torch
class     _UpperCamelCase    (  unittest.TestCase						):
							'''simple docstring'''







							def      snake_case							(	self      ):
										__lowerCAmelCase							       =     torch.tensor([-1_00, -1, -0.1, 0, 0.1, 1.0, 1_00]      )
										__lowerCAmelCase							       =     get_activation("gelu"      )
										self.assertTrue(torch.allclose(gelu_python(__a      )       ,  torch_builtin(__a      )      )      )
										self.assertFalse(torch.allclose(gelu_python(__a      )       ,  gelu_new(__a      )      )      )

							def      snake_case							(	self      ):
										__lowerCAmelCase							       =     torch.tensor([-1_00, -1, -0.1, 0, 0.1, 1.0, 1_00]      )
										__lowerCAmelCase							       =     get_activation("gelu"      )
										__lowerCAmelCase							       =     get_activation("gelu_10"      )

										__lowerCAmelCase							       =     torch_builtin(__a      )
										__lowerCAmelCase							       =     geluaa(__a      )

										__lowerCAmelCase							       =     torch.where(y_gelu_aa < 1_0.0       ,  1       ,  0      )

										self.assertTrue(torch.max(__a      ).item() == 1_0.0      )
										self.assertTrue(torch.allclose(y_gelu * clipped_mask       ,  y_gelu_aa * clipped_mask      )      )

							def      snake_case							(	self      ):
										get_activation("gelu"      )
										get_activation("gelu_10"      )
										get_activation("gelu_fast"      )
										get_activation("gelu_new"      )
										get_activation("gelu_python"      )
										get_activation("gelu_pytorch_tanh"      )
										get_activation("linear"      )
										get_activation("mish"      )
										get_activation("quick_gelu"      )
										get_activation("relu"      )
										get_activation("sigmoid"      )
										get_activation("silu"      )
										get_activation("swish"      )
										get_activation("tanh"      )
										with self.assertRaises(__a      ):
													get_activation("bogus"      )
										with self.assertRaises(__a      ):
													get_activation(__a      )



							def      snake_case							(	self      ):
										__lowerCAmelCase							       =     get_activation("gelu"      )
										__lowerCAmelCase							       =     1
										__lowerCAmelCase							       =     get_activation("gelu"      )
										self.assertEqual(acta.a       ,  1      )
										with self.assertRaises(__a      ):
													__lowerCAmelCase							       =     acta.a




