



'''simple docstring'''

from typing import Any



class 		lowerCamelCase__      :




					'''simple docstring'''



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



						'''simple docstring'''





						_lowercase					:       Optional[int]       =		data
						_lowercase					:       Union[str, Any]       =		None




					def __repr__(  self				:	List[str]					)  ->       str:



						'''simple docstring'''





						return F'''Node({self.data})'''






class 		lowerCamelCase__      :




					'''simple docstring'''



					def __init__(  self				:	List[str]					)  ->       Optional[int]:



						'''simple docstring'''





						_lowercase					:       str       =		None




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



						'''simple docstring'''





						_lowercase					:       Dict       =		self.head
						while node:
							yield node.data
							_lowercase					:       str       =		node.next




					def __len__(  self				:	str					)  ->       int:



						'''simple docstring'''





						return sum(1 for _ in self					)




					def __repr__(  self				:	List[str]					)  ->       str:



						'''simple docstring'''





						return "->".join([str(UpperCamelCase_					) for item in self]					)




					def __getitem__(  self				:	Union[str, Any]     ,  UpperCamelCase_				:	int					)  ->       Any:



						'''simple docstring'''





						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				:	Optional[int]     ,  UpperCamelCase_				:	int     ,  UpperCamelCase_				:	Any					)  ->       None:



						'''simple docstring'''





						if not 0 <= index < len(self					):
							raise ValueError('list index out of range.'					)
						_lowercase					:       Dict       =		self.head
						for _ in range(UpperCamelCase_					):
							_lowercase					:       List[str]       =		current.next
						_lowercase					:       Optional[int]       =		data




					def 						__UpperCAmelCase     (  self				:	Union[str, Any]     ,  UpperCamelCase_				:	Any					)  ->       None:



						'''simple docstring'''





						self.insert_nth(len(self					)     ,  UpperCamelCase_					)




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



						'''simple docstring'''





						self.insert_nth(0     ,  UpperCamelCase_					)




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



						'''simple docstring'''





						if not 0 <= index <= len(self					):
							raise IndexError('list index out of range'					)
						_lowercase					:       List[str]       =		Node(UpperCamelCase_					)
						if self.head is None:
							_lowercase					:       List[Any]       =		new_node
						elif index == 0:
							_lowercase					:       Dict       =		self.head  # link new_node to head
							_lowercase					:       List[Any]       =		new_node
						else:
							_lowercase					:       Tuple       =		self.head
							for _ in range(index - 1					):
								_lowercase					:       Tuple       =		temp.next
							_lowercase					:       Union[str, Any]       =		temp.next
							_lowercase					:       List[Any]       =		new_node




					def 						__UpperCAmelCase     (  self				:	Optional[int]					)  ->       None:  # print every node data



						'''simple docstring'''





						print(self					)




					def 						__UpperCAmelCase     (  self				:	int					)  ->       Any:



						'''simple docstring'''





						return self.delete_nth(0					)




					def 						__UpperCAmelCase     (  self				:	Union[str, Any]					)  ->       Any:  # delete from tail



						'''simple docstring'''





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




					def 						__UpperCAmelCase     (  self				:	Tuple     ,  UpperCamelCase_				:	int = 0					)  ->       Any:



						'''simple docstring'''





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




					def 						__UpperCAmelCase     (  self				:	Tuple					)  ->       bool:



						'''simple docstring'''





						return self.head is None




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



						'''simple docstring'''





						_lowercase					:       List[str]       =		None
						_lowercase					:       Union[str, Any]       =		self.head

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







def 						__UpperCamelCase				(							) ->			None:
	_lowercase					:       Optional[Any]       =		LinkedList()
	assert linked_list.is_empty() is True
	assert str(_lowercase					) == ""

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

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

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







def 						__UpperCamelCase				(							) ->			None:
	_lowercase					:       List[Any]       =		[
	    -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,
	]
	_lowercase					:       int       =		LinkedList()

	for i in test_input:
		linked_list.insert_tail(_lowercase					)

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

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

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







def 						__UpperCamelCase				(							) ->			Dict:
	from doctest import testmod

	testmod()

	_lowercase					:       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(_lowercase					)
	print('\nReading/changing Node data using indexing:'					)
	print(f'''Element at Position 1: {linked_list[1]}'''					)
	_lowercase					:       List[Any]       =		input('Enter New Value: '					).strip()
	print('New list:'					)
	print(_lowercase					)
	print(f'''length of linked_list is : {len(_lowercase					)}'''					)


if __name__ == "__main__":
		main()





'''simple docstring'''

import argparse
from collections import defaultdict







def 						__UpperCamelCase				(							_lowercase,				_lowercase,				_lowercase,				_lowercase,				_lowercase					) ->			int:
	_lowercase					:       Optional[int]       =		f'''{file}_{class_name}_{test_name}'''
	done_test[_id] += 1

	with open(_lowercase,				'r'					) as f:
		_lowercase					:       Optional[int]       =		f.readlines()

	_lowercase					:       Dict       =		f'''class {class_name}('''
	_lowercase					:       List[Any]       =		f'''{4 * " "}def {test_name}('''
	_lowercase					:       List[str]       =		f'''{8 * " "}{correct_line.split()[0]}'''
	_lowercase					:       List[str]       =		f'''{16 * " "}{correct_line.split()[0]}'''
	_lowercase					:       Dict       =		False
	_lowercase					:       str       =		False
	_lowercase					:       List[Any]       =		False
	_lowercase					:       Union[str, Any]       =		False
	_lowercase					:       Any       =		0
	_lowercase					:       Tuple       =		0

	_lowercase					:       Optional[int]       =		[]
	for line in lines:
		if line.startswith(_lowercase					):
			_lowercase					:       int       =		True
		elif in_class and line.startswith(_lowercase					):
			_lowercase					:       List[Any]       =		True
		elif in_class and in_func and (line.startswith(_lowercase					) or line.startswith(_lowercase					)):
			_lowercase					:       str       =		len(line.split(correct_line.split()[0]					)[0]					)
			count += 1

			if count == done_test[_id]:
				_lowercase					:       List[Any]       =		True

		if in_class and in_func and in_line:
			if ")" not in line:
				continue
			else:
				_lowercase					:       Any       =		True

		if in_class and in_func and in_line and insert_line:
			new_lines.append(f'''{spaces * " "}{correct_line}'''					)
			_lowercase					:       Any       =		False
		else:
			new_lines.append(_lowercase					)

	with open(_lowercase,				'w'					) as f:
		for line in new_lines:
			f.write(_lowercase					)







def 						__UpperCamelCase				(							_lowercase,				_lowercase=None					) ->			Optional[Any]:
	if fail is not None:
		with open(_lowercase,				'r'					) as f:
			_lowercase					:       Any       =		{l.strip() for l in f.readlines()}
	else:
		_lowercase					:       str       =		None

	with open(_lowercase,				'r'					) as f:
		_lowercase					:       str       =		f.readlines()

	_lowercase					:       Union[str, Any]       =		defaultdict(_lowercase					)
	for line in correct_lines:
		_lowercase  ,    _lowercase  ,    _lowercase  ,    _lowercase					:       Union[str, Any]       =		line.split(';'					)
		if test_failures is None or "::".join([file, class_name, test_name]					) in test_failures:
			overwrite_file(_lowercase,				_lowercase,				_lowercase,				_lowercase,				_lowercase					)


if __name__ == "__main__":
		_A				:    str     						=argparse.ArgumentParser()
		parser.add_argument('''--correct_filename''', help='''filename of tests with expected result''')
		parser.add_argument('''--fail_filename''', help='''filename of test failures''', type=str, default=None)
		_A				:    Union[str, Any]     						=parser.parse_args()

		main(args.correct_filename, args.fail_filename)
