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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def release(self, signal=True):
 """ Unlocks the account. Method has no effect if the constructor argument `needs_lock` wsa set to False. :type signal: bool :param signal: Whether to emit the released_event signal. """

        if not self.needs_lock:
            return
        with self.synclock:
            self.lock.release()
            if signal:
                self.released_event(self)
            self.synclock.notify_all()