code: 
  
  
  """simple docstring"""
  class   lowercase__							:
  
  
  
  
     class   lowercase__							:
        __UpperCAmelCase       					=				'''_prev''', '''_data''', '''_next'''
  
  
  
  
  
        def __init__(       self			,      SCREAMING_SNAKE_CASE			,      SCREAMING_SNAKE_CASE			,      SCREAMING_SNAKE_CASE)     ->     List[Any]:
           _lowerCamelCase  :				Any      =		link_p
           _lowerCamelCase  :				List[str]      =		element
           _lowerCamelCase  :				Tuple      =		link_n
  
  
  
  
  
        def 		UpperCamelCase_     (       self)     ->     Tuple:
           return (
               F' Prev -> {self._prev is not None}, Next -> {self._next is not None}'
           )
  
  
  
  
  
  
  
     def __init__(       self)     ->     Any:
        _lowerCamelCase  :				List[str]      =		self._Node(__A			,      __A			,      __A)
        _lowerCamelCase  :				Union[str, Any]      =		self._Node(__A			,      __A			,      __A)
        _lowerCamelCase  :				List[Any]      =		self._trailer
        _lowerCamelCase  :				List[Any]      =		self._header
        _lowerCamelCase  :				Optional[Any]      =		0
  
  
  
  
  
     def __len__(       self)     ->     Union[str, Any]:
        return self._size
  
  
  
  
  
     def 		UpperCamelCase_     (       self)     ->     Tuple:
        return self.__len__() == 0
  
  
  
  
  
     def 		UpperCamelCase_     (       self			,      SCREAMING_SNAKE_CASE			,      SCREAMING_SNAKE_CASE			,      SCREAMING_SNAKE_CASE)     ->     Optional[Any]:
        _lowerCamelCase  :				Any      =		self._Node(__A			,      __A			,      __A)
        _lowerCamelCase  :				str      =		new_node
        _lowerCamelCase  :				Optional[int]      =		new_node
        self._size += 1
        return self
  
  
  
  
  
     def 		UpperCamelCase_     (       self			,      SCREAMING_SNAKE_CASE)     ->     int:
        _lowerCamelCase  :				Optional[Any]      =		node._prev
        _lowerCamelCase  :				Optional[Any]      =		node._next
  
        _lowerCamelCase  :				int      =		successor
        _lowerCamelCase  :				int      =		predecessor
        self._size -= 1
        _lowerCamelCase  :				Optional[Any]      =		node._data
        _lowerCamelCase  :				Tuple      =		None
        del node
        return temp
  
  
  
  
  
  
  
  class   lowercase__							(				_DoublyLinkedBase							):
  
  
  
  
  
     def 		UpperCamelCase_     (       self)     ->     int:
  
  
  
  
  
  
  
        if self.is_empty():
           raise Exception("""List is empty""")
        return self._header._next._data
  
  
  
  
  
     def 		UpperCamelCase_     (       self)     ->     List[Any]:
  
  
  
  
  
  
  
        if self.is_empty():
           raise Exception("""List is empty""")
        return self._trailer._prev._data
  
  
  
  
  
     def 		UpperCamelCase_     (       self			,      SCREAMING_SNAKE_CASE)     ->     Any:
        return self._insert(self._header			,      __A			,      self._header._next)
  
  
  
  
  
     def 		UpperCamelCase_     (       self			,      SCREAMING_SNAKE_CASE)     ->     List[Any]:
        return self._insert(self._trailer._prev			,      __A			,      self._trailer)
  
  
  
  
  
     def 		UpperCamelCase_     (       self)     ->     Tuple:
  
  
  
  
  
  
  
        if self.is_empty():
           raise IndexError("""remove_first from empty list""")
        return self._delete(self._header._next)
  
  
  
  
  
     def 		UpperCamelCase_     (       self)     ->     Dict:
  
  
  
  
  
  
  
        if self.is_empty():
           raise IndexError("""remove_first from empty list""")
        return self._delete(self._trailer._prev)
  
  
style_context: 
  
  
  """simple docstring"""
  import os
  
  from apache_beam.io.filesystems import FileSystems
  from apache_beam.pipeline import Pipeline
  
  from .logging import get_logger
  
  
  UpperCAmelCase   =	2 << 20  # 2mb
  UpperCAmelCase   =	get_logger(__name__)
  
  
  
  
  class   lowercase__							(				A_							):
  
  
  
  
  
     def 		UpperCamelCase_     (       self)     ->     Dict:
        _lowerCamelCase  :				Tuple      =		self._options.get_all_options().get("""runner""")
        return runner in [None, "DirectRunner", "PortableRunner"]
  
  
  
  
  
  
  
  def 							_snake_case			(      __snake_case       :			Union[str, Any]	,   __snake_case       :			List[Any]	,   __snake_case       :			Any=False      ):
  
  
  
  
     """simple docstring"""
  
  
  
  
  
  
  
     _lowerCamelCase  :				Any      =		FileSystems
     if fs.exists(__snake_case      ):
        if force_upload:
           logger.info(F'Remote path already exist: {remote_file_path}. Overwriting it as force_upload=True.'      )
        else:
           logger.info(F'Remote path already exist: {remote_file_path}. Skipping it as force_upload=False.'      )
           return
     with fs.create(__snake_case      ) as remote_file:
        with open(__snake_case	,   """rb"""      ) as local_file:
           _lowerCamelCase  :				Optional[Any]      =		local_file.read(__snake_case      )
           while chunk:
              remote_file.write(__snake_case      )
              _lowerCamelCase  :				Tuple      =		local_file.read(__snake_case      )
  
  
  
  
  
  def 							_snake_case			(      __snake_case       :			Union[str, Any]	,   __snake_case       :			List[Any]	,   __snake_case       :			Union[str, Any]=False      ):
  
  
  
  
     """simple docstring"""
  
  
  
  
  
  
  
     _lowerCamelCase  :				int      =		FileSystems
     if os.path.exists(__snake_case      ):
        if force_download:
           logger.info(F'Local path already exist: {remote_file_path}. Overwriting it as force_upload=True.'      )
        else:
           logger.info(F'Local path already exist: {remote_file_path}. Skipping it as force_upload=False.'      )
           return
     with fs.open(__snake_case      ) as remote_file:
        with open(__snake_case	,   """wb"""      ) as local_file:
           _lowerCamelCase  :				str      =		remote_file.read(__snake_case      )
           while chunk:
              local_file.write(__snake_case      )
              _lowerCamelCase  :				Any      =		remote_file.read(__snake_case      )
  
  