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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, blocking=True):
 """Start the producer. This will eventually fire the ``server_start`` and ``running`` events in sequence, which signify that the incoming TCP request socket is running and the workers have been forked, respectively. If ``blocking`` is False, control ."""

        self.setup_zmq()
        if blocking:
            self.serve()
        else:
            eventlet.spawn(self.serve)
            # ensure that self.serve runs now as calling code will
            # expect start() to have started the server even non-blk
            eventlet.sleep(0)