

"""simple docstring"""




import logging
import os
import threading
import time


try:
     import warnings
except ImportError:
     _a				:		Union[str, Any]	   =       None

try:
     import msvcrt
except ImportError:
     _a				:		Tuple	   =       None

try:
     import fcntl
except ImportError:
     _a				:		Optional[Any]	   =       None


# Backward compatibility
# ------------------------------------------------
try:
     TimeoutError
except NameError:
     _a				:		Tuple	   =       OSError


# Data
# ------------------------------------------------
_a				:		int	   =       [
    'Timeout',
    'BaseFileLock',
    'WindowsFileLock',
    'UnixFileLock',
    'SoftFileLock',
    'FileLock',
]

_a				:		Dict	   =       '3.0.12'


_a				:		Optional[int]	   =       None





def 							SCREAMING_SNAKE_CASE					(      )	->				List[str]:
  global _logger
  _lowerCAmelCase						:	Dict        =					_logger or logging.getLogger(__name__     )
  return _logger
class 						__A							(			lowercase__		):






     def __init__(		self    ,					a__  ):
       _lowerCAmelCase						:	Dict        =					lock_file
       return None






     def __str__(		self  ):
       _lowerCAmelCase						:	List[Any]        =					F"The file lock '{self.lock_file}' could not be acquired."
       return temp







class 						__A							:






     def __init__(		self    ,					a__  ):
       _lowerCAmelCase						:	List[str]        =					lock
       return None






     def __enter__(		self  ):
       return self.lock






     def __exit__(		self    ,					a__    ,					a__    ,					a__  ):
       self.lock.release()
       return None







class 						__A							:






     def __init__(		self    ,					a__    ,					a__=-1    ,					a__=None  ):
       _lowerCAmelCase						:	List[Any]        =					max_filename_length if max_filename_length is not None else 255
       # Hash the filename if it's too long
       _lowerCAmelCase						:	Dict        =					self.hash_filename_if_too_long(_a    ,					_a  )
       # The path to the lock file.
       _lowerCAmelCase						:	List[Any]        =					lock_file

       # The file descriptor for the *_lock_file* as it is returned by the
       # os.open() function.
       # This file lock is only NOT None, if the object currently holds the
       # lock.
       _lowerCAmelCase						:	List[str]        =					None

       # The default timeout value.
       _lowerCAmelCase						:	List[str]        =					timeout

       # We use this lock primarily for the lock counter.
       _lowerCAmelCase						:	int        =					threading.Lock()

       # The lock counter is used for implementing the nested locking
       # mechanism. Whenever the lock is acquired, the counter is increased and
       # the lock is only released, when this value is 0 again.
       _lowerCAmelCase						:	str        =					0
       return None






     @property
     def    __A  (		self  ):
       return self._lock_file






     @property
     def    __A  (		self  ):
       return self._timeout






     @timeout.setter
     def    __A  (		self    ,					a__  ):
       _lowerCAmelCase						:	Union[str, Any]        =					float(_a  )
       return None






     def    __A  (		self  ):
       raise NotImplementedError()






     def    __A  (		self  ):
       raise NotImplementedError()






     @property
     def    __A  (		self  ):
       return self._lock_file_fd is not None






     def    __A  (		self    ,					a__=None    ,					a__=0.0_5  ):






       if timeout is None:
         _lowerCAmelCase						:	str        =					self.timeout

       # Increment the number right at the beginning.
       # We can still undo it, if something fails.
       with self._thread_lock:
         self._lock_counter += 1

       _lowerCAmelCase						:	str        =					id(self  )
       _lowerCAmelCase						:	int        =					self._lock_file
       _lowerCAmelCase						:	Dict        =					time.time()
       try:
         while True:
           with self._thread_lock:
             if not self.is_locked:
               logger().debug(F"Attempting to acquire lock {lock_id} on {lock_filename}"  )
               self._acquire()

           if self.is_locked:
             logger().debug(F"Lock {lock_id} acquired on {lock_filename}"  )
             break
           elif timeout >= 0 and time.time() - start_time > timeout:
             logger().debug(F"Timeout on acquiring lock {lock_id} on {lock_filename}"  )
             raise Timeout(self._lock_file  )
           else:
             logger().debug(
                 F"Lock {lock_id} not acquired on {lock_filename}, waiting {poll_intervall} seconds ..."  )
             time.sleep(_a  )
       except:  # noqa
         # Something did go wrong, so decrement the counter.
         with self._thread_lock:
           _lowerCAmelCase						:	Tuple        =					max(0    ,					self._lock_counter - 1  )

         raise
       return _Acquire_ReturnProxy(lock=self  )






     def    __A  (		self    ,					a__=False  ):






       with self._thread_lock:
         if self.is_locked:
           self._lock_counter -= 1

           if self._lock_counter == 0 or force:
             _lowerCAmelCase						:	int        =					id(self  )
             _lowerCAmelCase						:	Union[str, Any]        =					self._lock_file

             logger().debug(F"Attempting to release lock {lock_id} on {lock_filename}"  )
             self._release()
             _lowerCAmelCase						:	Optional[Any]        =					0
             logger().debug(F"Lock {lock_id} released on {lock_filename}"  )

       return None






     def __enter__(		self  ):
       self.acquire()
       return self






     def __exit__(		self    ,					a__    ,					a__    ,					a__  ):
       self.release()
       return None






     def __del__(		self  ):
       self.release(force=_a  )
       return None






     def    __A  (		self    ,					a__    ,					a__  ):
       _lowerCAmelCase						:	Any        =					os.path.basename(_a  )
       if len(_a  ) > max_length and max_length > 0:
         _lowerCAmelCase						:	List[str]        =					os.path.dirname(_a  )
         _lowerCAmelCase						:	Optional[Any]        =					str(hash(_a  )  )
         _lowerCAmelCase						:	List[str]        =					filename[: max_length - len(_a  ) - 8] + '...' + hashed_filename + '.lock'
         return os.path.join(_a    ,					_a  )
       else:
         return path







class 						__A							(			lowercase__		):






     def __init__(		self    ,					a__    ,					a__=-1    ,					a__=None  ):
       from .file_utils import relative_to_absolute_path

       super().__init__(_a    ,					timeout=_a    ,					max_filename_length=_a  )
       _lowerCAmelCase						:	Any        =					'\\\\?\\' + relative_to_absolute_path(self.lock_file  )






     def    __A  (		self  ):
       _lowerCAmelCase						:	List[Any]        =					os.O_RDWR | os.O_CREAT | os.O_TRUNC

       try:
         _lowerCAmelCase						:	int        =					os.open(self._lock_file    ,					_a  )
       except OSError:
         pass
       else:
         try:
           msvcrt.locking(_a    ,					msvcrt.LK_NBLCK    ,					1  )
         except OSError:
           os.close(_a  )
         else:
           _lowerCAmelCase						:	List[Any]        =					fd
       return None






     def    __A  (		self  ):
       _lowerCAmelCase						:	Optional[int]        =					self._lock_file_fd
       _lowerCAmelCase						:	Any        =					None
       msvcrt.locking(_a    ,					msvcrt.LK_UNLCK    ,					1  )
       os.close(_a  )

       try:
         os.remove(self._lock_file  )
       # Probably another instance of the application
       # that acquired the file lock.
       except OSError:
         pass
       return None







class 						__A							(			lowercase__		):






     def __init__(		self    ,					a__    ,					a__=-1    ,					a__=None  ):
       _lowerCAmelCase						:	Optional[int]        =					os.statvfs(os.path.dirname(_a  )  ).f_namemax
       super().__init__(_a    ,					timeout=_a    ,					max_filename_length=_a  )






     def    __A  (		self  ):
       _lowerCAmelCase						:	List[Any]        =					os.O_RDWR | os.O_CREAT | os.O_TRUNC
       _lowerCAmelCase						:	Optional[Any]        =					os.open(self._lock_file    ,					_a  )

       try:
         fcntl.flock(_a    ,					fcntl.LOCK_EX | fcntl.LOCK_NB  )
       except OSError:
         os.close(_a  )
       else:
         _lowerCAmelCase						:	Tuple        =					fd
       return None






     def    __A  (		self  ):
       _lowerCAmelCase						:	Optional[int]        =					self._lock_file_fd
       _lowerCAmelCase						:	Union[str, Any]        =					None
       fcntl.flock(_a    ,					fcntl.LOCK_UN  )
       os.close(_a  )
       return None







class 						__A							(			lowercase__		):






     def    __A  (		self  ):
       _lowerCAmelCase						:	Dict        =					os.O_WRONLY | os.O_CREAT | os.O_EXCL | os.O_TRUNC
       try:
         _lowerCAmelCase						:	List[Any]        =					os.open(self._lock_file    ,					_a  )
       except OSError:
         pass
       else:
         _lowerCAmelCase						:	List[str]        =					fd
       return None






     def    __A  (		self  ):
       os.close(self._lock_file_fd  )
       _lowerCAmelCase						:	Tuple        =					None

       try:
         os.remove(self._lock_file  )
       # The file is already deleted and that's what we want.
       except OSError:
         pass
       return None







_a				:		Optional[Any]	   =       None

if msvcrt:
     _a				:		Any	   =       WindowsFileLock
elif fcntl:
     _a				:		List[str]	   =       UnixFileLock
else:
     _a				:		Union[str, Any]	   =       SoftFileLock

     if warnings is not None:
          warnings.warn('only soft file lock is available')





"""simple docstring"""




def 							SCREAMING_SNAKE_CASE					(      _lowerCamelCase						:	int = 100     )	->				int:
  _lowerCAmelCase						:	Optional[Any]        =					n * (n + 1) * (2 * n + 1) / 6
  _lowerCAmelCase						:	Tuple        =					(n * (n + 1) / 2) ** 2
  return int(square_of_sum - sum_of_squares     )


if __name__ == "__main__":
     print(F"""{solution() = }""")




