
class 	_lowercase       :




	def __init__(			self		,			UpperCAmelCase_		,			UpperCAmelCase_=None		,			UpperCAmelCase_=None )		->							Union[str, Any]:
			lowerCamelCase					:      Tuple          =   data
			lowerCamelCase					:      List[Any]          =   previous
			lowerCamelCase					:      Optional[int]          =   next_node




	def __str__(			self )		->							str:
			return F"""{self.data}"""




	def       _UpperCamelCase   (			self )		->							int:
			return self.data




	def       _UpperCamelCase   (			self )		->							Dict:
			return self.next




	def       _UpperCamelCase   (			self )		->							List[str]:
			return self.previous






class 	_lowercase       :




	def __init__(			self		,			UpperCAmelCase_ )		->							Any:
			lowerCamelCase					:      Union[str, Any]          =   head




	def __iter__(			self )		->							List[str]:
			return self




	def       _UpperCamelCase   (			self )		->							Optional[int]:
			if not self.current:
					raise StopIteration
			else:
					lowerCamelCase					:      List[Any]          =   self.current.get_data()
					lowerCamelCase					:      Tuple          =   self.current.get_next()
					return value






class 	_lowercase       :




	def __init__(			self )		->							Union[str, Any]:
			lowerCamelCase					:      List[Any]          =   None  # First node in list
			lowerCamelCase					:      Optional[Any]          =   None  # Last node in list




	def __str__(			self )		->							Any:
			lowerCamelCase					:      Optional[Any]          =   self.head
			lowerCamelCase					:      str          =   []
			while current is not None:
					nodes.append(current.get_data() )
					lowerCamelCase					:      Tuple          =   current.get_next()
			return " ".join(str(UpperCAmelCase_ ) for node in nodes )




	def __contains__(			self		,			UpperCAmelCase_ )		->							Optional[int]:
			lowerCamelCase					:      str          =   self.head
			while current:
					if current.get_data() == value:
							return True
					lowerCamelCase					:      str          =   current.get_next()
			return False




	def __iter__(			self )		->							Tuple:
			return LinkedListIterator(self.head )




	def       _UpperCamelCase   (			self )		->							List[Any]:
			if self.head:
					return self.head.get_data()
			return None




	def       _UpperCamelCase   (			self )		->							Optional[Any]:
			if self.tail:
					return self.tail.get_data()
			return None




	def       _UpperCamelCase   (			self		,			UpperCAmelCase_ )		->							None:
			if self.head is None:
					lowerCamelCase					:      List[str]          =   node
					lowerCamelCase					:      Dict          =   node
			else:
					self.insert_before_node(self.head		,			UpperCAmelCase_ )




	def       _UpperCamelCase   (			self		,			UpperCAmelCase_ )		->							None:
			if self.head is None:
					self.set_head(UpperCAmelCase_ )
			else:
					self.insert_after_node(self.tail		,			UpperCAmelCase_ )




	def       _UpperCamelCase   (			self		,			UpperCAmelCase_ )		->							None:
			lowerCamelCase					:      Union[str, Any]          =   Node(UpperCAmelCase_ )
			if self.head is None:
					self.set_head(UpperCAmelCase_ )
			else:
					self.set_tail(UpperCAmelCase_ )




	def       _UpperCamelCase   (			self		,			UpperCAmelCase_		,			UpperCAmelCase_ )		->							None:
			lowerCamelCase					:      int          =   node
			lowerCamelCase					:      List[str]          =   node.previous

			if node.get_previous() is None:
					lowerCamelCase					:      List[str]          =   node_to_insert
			else:
					lowerCamelCase					:      str          =   node_to_insert

			lowerCamelCase					:      List[Any]          =   node_to_insert




	def       _UpperCamelCase   (			self		,			UpperCAmelCase_		,			UpperCAmelCase_ )		->							None:
			lowerCamelCase					:      Tuple          =   node
			lowerCamelCase					:      str          =   node.next

			if node.get_next() is None:
					lowerCamelCase					:      Union[str, Any]          =   node_to_insert
			else:
					lowerCamelCase					:      int          =   node_to_insert

			lowerCamelCase					:      Union[str, Any]          =   node_to_insert




	def       _UpperCamelCase   (			self		,			UpperCAmelCase_		,			UpperCAmelCase_ )		->							None:
			lowerCamelCase					:      int          =   1
			lowerCamelCase					:      Any          =   Node(UpperCAmelCase_ )
			lowerCamelCase					:      List[str]          =   self.head
			while node:
					if current_position == position:
							self.insert_before_node(UpperCAmelCase_		,			UpperCAmelCase_ )
							return
					current_position += 1
					lowerCamelCase					:      Union[str, Any]          =   node.next
			self.insert_after_node(self.tail		,			UpperCAmelCase_ )




	def       _UpperCamelCase   (			self		,			UpperCAmelCase_ )		->							Node:
			lowerCamelCase					:      List[str]          =   self.head
			while node:
					if node.get_data() == item:
							return node
					lowerCamelCase					:      Optional[int]          =   node.get_next()
			raise Exception('Node not found' )




	def       _UpperCamelCase   (			self		,			UpperCAmelCase_ )		->							Any:
			if (node := self.get_node(UpperCAmelCase_ )) is not None:
					if node == self.head:
							lowerCamelCase					:      str          =   self.head.get_next()

					if node == self.tail:
							lowerCamelCase					:      List[str]          =   self.tail.get_previous()

					self.remove_node_pointers(UpperCAmelCase_ )




	@staticmethod
	def       _UpperCamelCase   (			UpperCAmelCase_ )		->							None:
			if node.get_next():
					lowerCamelCase					:      Dict          =   node.previous

			if node.get_previous():
					lowerCamelCase					:      Optional[int]          =   node.next

			lowerCamelCase					:      List[str]          =   None
			lowerCamelCase					:      Union[str, Any]          =   None




	def       _UpperCamelCase   (			self )		->							int:
			return self.head is None


def 		UpperCAmelCase (		):





		'''simple docstring'''






if __name__ == "__main__":
					import doctest

					doctest.testmod()








"""simple docstring"""

import os

try:
					from .build_directory_md import good_file_paths
except ImportError:
					from build_directory_md import good_file_paths  # type: ignore

_A						=			list(good_file_paths())
assert filepaths, "good_file_paths() failed!"

_A						=			[file for file in filepaths if file != file.lower()]
if upper_files:
					print(F"""{len(upper_files)} files contain uppercase characters:""")
					print('\n'.join(upper_files) + '\n')

_A						=			[file for file in filepaths if ' ' in file]
if space_files:
					print(F"""{len(space_files)} files contain space characters:""")
					print('\n'.join(space_files) + '\n')

_A						=			[file for file in filepaths if '-' in file]
if hyphen_files:
					print(F"""{len(hyphen_files)} files contain hyphen characters:""")
					print('\n'.join(hyphen_files) + '\n')

_A						=			[file for file in filepaths if os.sep not in file]
if nodir_files:
					print(F"""{len(nodir_files)} files are not in a directory:""")
					print('\n'.join(nodir_files) + '\n')

_A						=			len(upper_files + space_files + hyphen_files + nodir_files)
if bad_files:
					import sys

					sys.exit(bad_files)






