Best way to handle exceptions with try/finally

[Maxim Sloyko]

I guess the following standard method will help :

class MyLocker(object):
    def __init__(self, lock):
          self.lock = lock
          self.lock.acquire()

    def __del__(self):
        self.lock.release()

Then whenever you need to acquire a lock:
templock = MyLocker(self.__mutex)

del templock # will release the lock (provided you didn't create an
extra link to this object)