



'''simple docstring'''




import os
import unittest

from huggingface_hub.utils import are_progress_bars_disabled

import transformers.models.bart.tokenization_bart
from transformers import logging
from transformers.testing_utils import CaptureLogger, mockenv, mockenv_context
from transformers.utils.logging import disable_progress_bar, enable_progress_bar







class 	_lowerCAmelCase							(			unittest.TestCase ):


	def     _a	(self							):
				A_	:						Tuple	=     logging.get_logger()

				# the current default level is logging.WARNING
				A_	:						int	=     logging.get_verbosity()

				logging.set_verbosity_error()
				self.assertEqual(logger.getEffectiveLevel()       ,      logging.get_verbosity()							)

				logging.set_verbosity_warning()
				self.assertEqual(logger.getEffectiveLevel()       ,      logging.get_verbosity()							)

				logging.set_verbosity_info()
				self.assertEqual(logger.getEffectiveLevel()       ,      logging.get_verbosity()							)

				logging.set_verbosity_debug()
				self.assertEqual(logger.getEffectiveLevel()       ,      logging.get_verbosity()							)

				# restore to the original level
				logging.set_verbosity(__snake_case							)


	def     _a	(self							):
				A_	:						str	=     logging.get_verbosity()

				A_	:						List[str]	=     logging.get_logger("""transformers.models.bart.tokenization_bart"""							)
				A_	:						str	=     """Testing 1, 2, 3"""

				# should be able to log warnings (if default settings weren't overridden by `pytest --log-level-all`)
				if level_origin <= logging.WARNING:
							with CaptureLogger(__snake_case							) as cl:
										logger.warning(__snake_case							)
							self.assertEqual(cl.out       ,      msg + """\n"""							)

				# this is setting the level for all of `transformers.*` loggers
				logging.set_verbosity_error()

				# should not be able to log warnings
				with CaptureLogger(__snake_case							) as cl:
							logger.warning(__snake_case							)
				self.assertEqual(cl.out       ,      """"""							)

				# should be able to log warnings again
				logging.set_verbosity_warning()
				with CaptureLogger(__snake_case							) as cl:
							logger.warning(__snake_case							)
				self.assertEqual(cl.out       ,      msg + """\n"""							)

				# restore to the original level
				logging.set_verbosity(__snake_case							)


	@mockenv(TRANSFORMERS_VERBOSITY="""error"""							)
	def     _a	(self							):
				# reset for the env var to take effect, next time some logger call is made
				transformers.utils.logging._reset_library_root_logger()
				# this action activates the env var
				A_	:						Optional[Any]	=     logging.get_logger("""transformers.models.bart.tokenization_bart"""							)

				A_	:						str	=     os.getenv("""TRANSFORMERS_VERBOSITY"""       ,      __snake_case							)
				A_	:						Optional[int]	=     logging.log_levels[env_level_str]

				A_	:						Any	=     logging.get_verbosity()
				self.assertEqual(
				    __snake_case       ,      __snake_case       ,      F'TRANSFORMERS_VERBOSITY={env_level_str}/{env_level}, but internal verbosity is {current_level}'       ,      )

				# restore to the original level
				A_	:						Tuple	=     """"""
				transformers.utils.logging._reset_library_root_logger()


	@mockenv(TRANSFORMERS_VERBOSITY="""super-error"""							)
	def     _a	(self							):
				# reset for the env var to take effect, next time some logger call is made
				transformers.utils.logging._reset_library_root_logger()
				A_	:						Optional[int]	=     logging.logging.getLogger()
				with CaptureLogger(__snake_case							) as cl:
							# this action activates the env var
							logging.get_logger("""transformers.models.bart.tokenization_bart"""							)
				self.assertIn("""Unknown option TRANSFORMERS_VERBOSITY=super-error"""       ,      cl.out							)

				# no need to restore as nothing was changed


	def     _a	(self							):
				# testing `logger.warning_advice()`
				transformers.utils.logging._reset_library_root_logger()

				A_	:						List[Any]	=     logging.get_logger("""transformers.models.bart.tokenization_bart"""							)
				A_	:						Optional[int]	=     """Testing 1, 2, 3"""

				with mockenv_context(TRANSFORMERS_NO_ADVISORY_WARNINGS="""1"""							):
							# nothing should be logged as env var disables this method
							with CaptureLogger(__snake_case							) as cl:
										logger.warning_advice(__snake_case							)
							self.assertEqual(cl.out       ,      """"""							)

				with mockenv_context(TRANSFORMERS_NO_ADVISORY_WARNINGS=""""""							):
							# should log normally as TRANSFORMERS_NO_ADVISORY_WARNINGS is unset
							with CaptureLogger(__snake_case							) as cl:
										logger.warning_advice(__snake_case							)
							self.assertEqual(cl.out       ,      msg + """\n"""							)






def 	a			( ):
			'''simple docstring'''





			disable_progress_bar()
			assert are_progress_bars_disabled()

			enable_progress_bar()
			assert not are_progress_bars_disabled()



'''simple docstring'''


from typing import Any





class     lowercase__  :





							'''simple docstring'''


							def __init__(    self    ,					__snake_case  ):
											_SCREAMING_SNAKE_CASE :       Dict     		=      data
											_SCREAMING_SNAKE_CASE :       Optional[int]     		=      None






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





class     lowercase__  :





							'''simple docstring'''


							def __init__(    self  ):
											_SCREAMING_SNAKE_CASE :       Any     		=      None






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






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






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






							def __getitem__(    self    ,					__snake_case  ):
											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    ,					__snake_case    ,					__snake_case  ):
											if not 0 <= index < len(self  ):
															raise ValueError("""list index out of range."""  )
											_SCREAMING_SNAKE_CASE :       Any     		=      self.head
											for _ in range(__snake_case  ):
															_SCREAMING_SNAKE_CASE :       List[Any]     		=      current.next
											_SCREAMING_SNAKE_CASE :       Dict     		=      data






							def UpperCAmelCase_	(    self    ,					__snake_case  ):
											self.insert_nth(len(self  )    ,					__snake_case  )






							def UpperCAmelCase_	(    self    ,					__snake_case  ):
											self.insert_nth(0    ,					__snake_case  )






							def UpperCAmelCase_	(    self    ,					__snake_case    ,					__snake_case  ):
											if not 0 <= index <= len(self  ):
															raise IndexError("""list index out of range"""  )
											_SCREAMING_SNAKE_CASE :       Optional[int]     		=      Node(__snake_case  )
											if self.head is None:
															_SCREAMING_SNAKE_CASE :       str     		=      new_node
											elif index == 0:
															_SCREAMING_SNAKE_CASE :       Tuple     		=      self.head  # link new_node to head
															_SCREAMING_SNAKE_CASE :       str     		=      new_node
											else:
															_SCREAMING_SNAKE_CASE :       Tuple     		=      self.head
															for _ in range(index - 1  ):
																			_SCREAMING_SNAKE_CASE :       List[str]     		=      temp.next
															_SCREAMING_SNAKE_CASE :       Tuple     		=      temp.next
															_SCREAMING_SNAKE_CASE :       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    ,					__snake_case = 0  ):
											if not 0 <= index <= len(self  ) - 1:  # test if index is valid
															raise IndexError("""List index out of range."""  )
											_SCREAMING_SNAKE_CASE :       Tuple     		=      self.head  # default first node
											if index == 0:
															_SCREAMING_SNAKE_CASE :       List[Any]     		=      self.head.next
											else:
															_SCREAMING_SNAKE_CASE :       Tuple     		=      self.head
															for _ in range(index - 1  ):
																			_SCREAMING_SNAKE_CASE :       Any     		=      temp.next
															_SCREAMING_SNAKE_CASE :       Any     		=      temp.next
															_SCREAMING_SNAKE_CASE :       Union[str, Any]     		=      temp.next.next
											return delete_node.data






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






							def UpperCAmelCase_	(    self  ):
											_SCREAMING_SNAKE_CASE :       Dict     		=      None
											_SCREAMING_SNAKE_CASE :       int     		=      self.head

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







def 			snake_case_   (  ):







				"""simple docstring"""





				_SCREAMING_SNAKE_CASE :       Dict     		=      LinkedList()
				assert linked_list.is_empty() is True
				assert str(SCREAMING_SNAKE_CASE__     ) == ""

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

				linked_list.insert_head(0     )
				linked_list.insert_tail(11     )
				assert str(SCREAMING_SNAKE_CASE__     ) == "->".join(str(SCREAMING_SNAKE_CASE__     ) 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(SCREAMING_SNAKE_CASE__     ) == 9
				assert str(SCREAMING_SNAKE_CASE__     ) == "->".join(str(SCREAMING_SNAKE_CASE__     ) 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     ):
								_SCREAMING_SNAKE_CASE :       List[str]     		=      -i
				assert all(linked_list[i] == -i for i in range(0							,      9     )     ) is True

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







def 			snake_case_   (  ):







				"""simple docstring"""





				_SCREAMING_SNAKE_CASE :       Optional[int]     		=      [
				    -9,
				    100,
				    Node(7734_5112     ),
				    """dlrow olleH""",
				    7,
				    5555,
				    0,
				    -1_9_2.5_5_5_5_5,
				    """Hello, world!""",
				    7_7.9,
				    Node(10     ),
				    None,
				    None,
				    1_2.2_0,
				]
				_SCREAMING_SNAKE_CASE :       Optional[int]     		=      LinkedList()

				for i in test_input:
								linked_list.insert_tail(SCREAMING_SNAKE_CASE__     )

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

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

				# Delete the tail
				_SCREAMING_SNAKE_CASE :       List[Any]     		=      linked_list.delete_tail()
				assert result == 1_2.2
				assert (
				    str(SCREAMING_SNAKE_CASE__     ) == "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
				_SCREAMING_SNAKE_CASE :       Optional[int]     		=      linked_list.delete_nth(10     )
				assert result is None
				assert (
				    str(SCREAMING_SNAKE_CASE__     ) == "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(SCREAMING_SNAKE_CASE__     )
				    == "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(SCREAMING_SNAKE_CASE__     )
				assert (
				    str(SCREAMING_SNAKE_CASE__     )
				    == "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(SCREAMING_SNAKE_CASE__     )
				    == "None->None->Node(10)->77.9->Hello, world!->-192.55555->0->5555->"
				    "7->dlrow olleH->Node(77345112)->100->Node(Hello again, world!)"
				)







def 			snake_case_   (  ):







				"""simple docstring"""





				from doctest import testmod

				testmod()

				_SCREAMING_SNAKE_CASE :       Optional[int]     		=      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(SCREAMING_SNAKE_CASE__     )
				print("""\nReading/changing Node data using indexing:"""     )
				print(f"""Element at Position 1: {linked_list[1]}"""     )
				_SCREAMING_SNAKE_CASE :       Union[str, Any]     		=      input("""Enter New Value: """     ).strip()
				print("""New list:"""     )
				print(SCREAMING_SNAKE_CASE__     )
				print(f"""length of linked_list is : {len(SCREAMING_SNAKE_CASE__     )}"""     )


if __name__ == "__main__":
				main()




