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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 start(self):
 """Start the process with daemonization. If the process is already started this call should exit with code ALREADY_RUNNING. Otherwise it must call the 'daemonize' method and then call 'run'. """

        if self.pid is not None:

            LOG.error(
                "The process is already running with pid {0}.".format(self.pid)
            )
            sys.exit(exit.ALREADY_RUNNING)

        self.daemonize()

        LOG.info("Beginning run loop for process.")
        try:

            self.run()

        except Exception:

            LOG.exception("Uncaught exception in the daemon run() method.")
            self.stop()
            sys.exit(exit.RUN_FAILURE)