
"""simple docstring"""





import logging
import os
import threading
import time


try:
				import warnings
except ImportError:
				_a								=						None

try:
				import msvcrt
except ImportError:
				_a								=						None

try:
				import fcntl
except ImportError:
				_a								=						None


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


# Data
# ------------------------------------------------
_a								=						[
    """Timeout""",
    """BaseFileLock""",
    """WindowsFileLock""",
    """UnixFileLock""",
    """SoftFileLock""",
    """FileLock""",
]

_a								=						"""3.0.12"""


_a								=						None



def  lowerCamelCase__						(     )				->						List[Any]:


					"""simple docstring"""





					global _logger
					_UpperCamelCase									=    _logger or logging.getLogger(__name__      )
					return _logger






class        _UpperCAmelCase(       lowerCamelCase      ):



		def __init__(   self							,						__a)			->			Tuple:






							'''simple docstring'''
							_UpperCamelCase									=    lock_file
							return None




		def __str__(   self)			->			str:






							'''simple docstring'''
							_UpperCamelCase									=    F'''The file lock \'{self.lock_file}\' could not be acquired.'''
							return temp






class        _UpperCAmelCase:



		def __init__(   self							,						__a)			->			Optional[Any]:






							'''simple docstring'''
							_UpperCamelCase									=    lock
							return None



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






							'''simple docstring'''
							return self.lock




		def __exit__(   self							,						__a							,						__a							,						__a)			->			List[str]:






							'''simple docstring'''
							self.lock.release()
							return None






class        _UpperCAmelCase:



		def __init__(   self							,						__a							,						__a=-1							,						__a=None)			->			Optional[Any]:






							'''simple docstring'''
							_UpperCamelCase									=    max_filename_length if max_filename_length is not None else 2_55
							# Hash the filename if it's too long
							_UpperCamelCase									=    self.hash_filename_if_too_long(__a							,						__a)
							# The path to the lock file.
							_UpperCamelCase									=    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.
							_UpperCamelCase									=    None

							# The default timeout value.
							_UpperCamelCase									=    timeout

							# We use this lock primarily for the lock counter.
							_UpperCamelCase									=    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.
							_UpperCamelCase									=    0
							return None



		@property
		def 		UpperCAmelCase				(   self)			->			str:






							'''simple docstring'''
							return self._lock_file



		@property
		def 		UpperCAmelCase				(   self)			->			Tuple:






							'''simple docstring'''
							return self._timeout



		@timeout.setter
		def 		UpperCAmelCase				(   self							,						__a)			->			List[str]:






							'''simple docstring'''
							_UpperCamelCase									=    float(__a)
							return None



		def 		UpperCAmelCase				(   self)			->			Any:






							'''simple docstring'''
							raise NotImplementedError()



		def 		UpperCAmelCase				(   self)			->			int:






							'''simple docstring'''
							raise NotImplementedError()



		@property
		def 		UpperCAmelCase				(   self)			->			List[str]:






							'''simple docstring'''
							return self._lock_file_fd is not None



		def 		UpperCAmelCase				(   self							,						__a=None							,						__a=0.05)			->			str:






							'''simple docstring'''
							# Use the default timeout, if no timeout is provided.
							if timeout is None:
												_UpperCamelCase									=    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

							_UpperCamelCase									=    id(self)
							_UpperCamelCase									=    self._lock_file
							_UpperCamelCase									=    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:
																	_UpperCamelCase									=    max(0							,						self._lock_counter - 1)

												raise
							return _Acquire_ReturnProxy(lock=self)



		def 		UpperCAmelCase				(   self							,						__a=False)			->			Tuple:






							'''simple docstring'''
							with self._thread_lock:
												if self.is_locked:
																	self._lock_counter -= 1

																	if self._lock_counter == 0 or force:
																						_UpperCamelCase									=    id(self)
																						_UpperCamelCase									=    self._lock_file

																						logger().debug(F'''Attempting to release lock {lock_id} on {lock_filename}''')
																						self._release()
																						_UpperCamelCase									=    0
																						logger().debug(F'''Lock {lock_id} released on {lock_filename}''')

							return None



		def __enter__(   self)			->			Dict:






							'''simple docstring'''
							self.acquire()
							return self



		def __exit__(   self							,						__a							,						__a							,						__a)			->			List[str]:






							'''simple docstring'''
							self.release()
							return None



		def __del__(   self)			->			str:






							'''simple docstring'''
							self.release(force=__a)
							return None




		def 		UpperCAmelCase				(   self							,						__a							,						__a)			->			str:






							'''simple docstring'''
							_UpperCamelCase									=    os.path.basename(__a)
							if len(__a) > max_length and max_length > 0:
												_UpperCamelCase									=    os.path.dirname(__a)
												_UpperCamelCase									=    str(hash(__a))
												_UpperCamelCase									=    filename[: max_length - len(__a) - 8] + '''...''' + hashed_filename + '''.lock'''
												return os.path.join(__a							,						__a)
							else:
												return path






class        _UpperCAmelCase(       lowerCamelCase      ):



		def __init__(   self							,						__a							,						__a=-1							,						__a=None)			->			Union[str, Any]:






							'''simple docstring'''
							from .file_utils import relative_to_absolute_path

							super().__init__(__a							,						timeout=__a							,						max_filename_length=__a)
							_UpperCamelCase									=    '''\\\\?\\''' + relative_to_absolute_path(self.lock_file)



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






							'''simple docstring'''
							_UpperCamelCase									=    os.O_RDWR | os.O_CREAT | os.O_TRUNC

							try:
												_UpperCamelCase									=    os.open(self._lock_file							,						__a)
							except OSError:
												pass
							else:
												try:
																	msvcrt.locking(__a							,						msvcrt.LK_NBLCK							,						1)
												except OSError:
																	os.close(__a)
												else:
																	_UpperCamelCase									=    fd
							return None




		def 		UpperCAmelCase				(   self)			->			Any:






							'''simple docstring'''
							_UpperCamelCase									=    self._lock_file_fd
							_UpperCamelCase									=    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        _UpperCAmelCase(       lowerCamelCase      ):



		def __init__(   self							,						__a							,						__a=-1							,						__a=None)			->			str:






							'''simple docstring'''
							_UpperCamelCase									=    os.statvfs(os.path.dirname(__a)).f_namemax
							super().__init__(__a							,						timeout=__a							,						max_filename_length=__a)



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






							'''simple docstring'''
							_UpperCamelCase									=    os.O_RDWR | os.O_CREAT | os.O_TRUNC
							_UpperCamelCase									=    os.open(self._lock_file							,						__a)

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




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






							'''simple docstring'''
							# Do not remove the lockfile:
							#
							#   https://github.com/benediktschmitt/py-filelock/issues/31
							#   https://stackoverflow.com/questions/17708885/flock-removing-locked-file-without-race-condition
							_UpperCamelCase									=    self._lock_file_fd
							_UpperCamelCase									=    None
							fcntl.flock(__a							,						fcntl.LOCK_UN)
							os.close(__a)
							return None






class        _UpperCAmelCase(       lowerCamelCase      ):



		def 		UpperCAmelCase				(   self)			->			Any:






							'''simple docstring'''
							_UpperCamelCase									=    os.O_WRONLY | os.O_CREAT | os.O_EXCL | os.O_TRUNC
							try:
												_UpperCamelCase									=    os.open(self._lock_file							,						__a)
							except OSError:
												pass
							else:
												_UpperCamelCase									=    fd
							return None




		def 		UpperCAmelCase				(   self)			->			Optional[Any]:






							'''simple docstring'''
							os.close(self._lock_file_fd)
							_UpperCamelCase									=    None

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





_a								=						None

if msvcrt:
				_a								=						WindowsFileLock
elif fcntl:
				_a								=						UnixFileLock
else:
				_a								=						SoftFileLock

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













__A							:			Dict         =			"Alexander Joslin"

import operator as op

from .stack import Stack





def 				__lowerCAmelCase(       _SCREAMING_SNAKE_CASE				)							-> int:




    """simple docstring"""




    _A     =							{'*': op.mul, '/': op.truediv, '+': op.add, '-': op.sub}

    _A     =							Stack()
    _A     =							Stack()

    for i in equation:
        if i.isdigit():
            # RULE 1
            operand_stack.push(int(_SCREAMING_SNAKE_CASE				)				)
        elif i in operators:
            # RULE 2
            operator_stack.push(_SCREAMING_SNAKE_CASE				)
        elif i == ")":
            # RULE 4
            _A     =							operator_stack.peek()
            operator_stack.pop()
            _A     =							operand_stack.peek()
            operand_stack.pop()
            _A     =							operand_stack.peek()
            operand_stack.pop()

            _A     =							operators[opr](_SCREAMING_SNAKE_CASE							,     _SCREAMING_SNAKE_CASE				)
            operand_stack.push(_SCREAMING_SNAKE_CASE				)

    # RULE 5
    return operand_stack.peek()


if __name__ == "__main__":
 __A							:			Any         =			"(5 + ((4 * 2) * (2 + 3)))"
 # answer = 45
 print(f"{equation} = {dijkstras_two_stack_algorithm(equation)}")





