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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 local_service(self, name_or_id):
 """Get the locally synced information for a service. This method is safe to call outside of the background event loop without any race condition. Internally it uses a thread-safe mutex to protect the local copies of supervisor data and ensure that it cannot change while this method is iterating over it. Args: name_or_id (string or int):
 Either a short name for the service or a numeric id. Returns: ServiceState: the current state of the service synced locally at the time of the call. """


        if not self._loop.inside_loop():
            self._state_lock.acquire()

        try:
            if isinstance(name_or_id, int):
                if name_or_id not in self._name_map:
                    raise ArgumentError("Unknown ID used to look up service", id=name_or_id)
                name = self._name_map[name_or_id]
            else:
                name = name_or_id
            if name not in self.services:
                raise ArgumentError("Unknown service name", name=name)

            return copy(self.services[name])
        finally:
            if not self._loop.inside_loop():
                self._state_lock.release()