def _make_namespaced_xattr_key(key, namespace='user'):
    namespaced_key = ".".join([namespace, key])
    return namespaced_key
Create a fully-qualified xattr-key by including the intended namespace.
dataset/ETHPy150Open rcbops/glance-buildpackage/glance/image_cache/drivers/xattr.py/_make_namespaced_xattr_key