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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 _process(self, metric):
 """ Decorator for processing handlers with a lock, catching exceptions """

        if not self.enabled:
            return
        try:
            try:
                self.lock.acquire()
                self.process(metric)
            except Exception:
                self.log.error(traceback.format_exc())
        finally:
            if self.lock.locked():
                self.lock.release()