@classmethod
    def validate_version(cls, version):
        from novaclient import api_versions
        from novaclient import exceptions as nova_exc

        try:
            api_versions.get_api_version(version)
        except nova_exc.UnsupportedVersion:
            raise exceptions.RallyException(
                version % "Version string '%s' is unsupported.")
dataset/ETHPy150Open openstack/rally/rally/osclients.py/Nova.validate_version/swapped operands of `%`