redis/asyncio/cluster.py [642:662]:
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                if command.upper() in ("FCALL", "FCALL_RO"):
                    return random.randrange(0, REDIS_CLUSTER_HASH_SLOTS)
                raise RedisClusterException(
                    "No way to dispatch this command to Redis Cluster. "
                    "Missing key.\nYou can execute the command by specifying "
                    f"target nodes.\nCommand: {args}"
                )

        # single key command
        if len(keys) == 1:
            return self.keyslot(keys[0])

        # multi-key command; we need to make sure all keys are mapped to
        # the same slot
        slots = {self.keyslot(key) for key in keys}
        if len(slots) != 1:
            raise RedisClusterException(
                f"{command} - all keys must map to the same key slot"
            )

        return slots.pop()
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -



redis/cluster.py [1026:1046]:
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                if command.upper() in ("FCALL", "FCALL_RO"):
                    return random.randrange(0, REDIS_CLUSTER_HASH_SLOTS)
                raise RedisClusterException(
                    "No way to dispatch this command to Redis Cluster. "
                    "Missing key.\nYou can execute the command by specifying "
                    f"target nodes.\nCommand: {args}"
                )

        # single key command
        if len(keys) == 1:
            return self.keyslot(keys[0])

        # multi-key command; we need to make sure all keys are mapped to
        # the same slot
        slots = {self.keyslot(key) for key in keys}
        if len(slots) != 1:
            raise RedisClusterException(
                f"{command} - all keys must map to the same key slot"
            )

        return slots.pop()
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -