clustering.py 文件源码

def create_legacy_kmeans_nodes(f, new_group_name, legacy_group_name, namedtuple, clustering_key):
    """ Soft-link a legacy-structured (CR 1.2) kmeans subgroup (dest) to a new-style (CR 1.3) subgroup (src).
        The old-style was a group called 'kmeans' with subgroups named _K.
        The new-style is a group called 'clustering' with subgroups named kmeans_K_clusters, etc. """
    group = f.create_group(f.root, legacy_group_name)

    cluster_type, cluster_param = parse_clustering_key(clustering_key)
    if cluster_type != CLUSTER_TYPE_KMEANS:
        return

    legacy_key = format_legacy_clustering_key(cluster_type, cluster_param)
    subgroup = f.create_group(group, legacy_key)
    for field in namedtuple._fields:
        target = '/%s/_%s/%s' % (new_group_name, clustering_key, field)

        if f.__contains__(target):
            # NOTE: coerce `target` to 'str' here because pytables chokes on unicode `target`
            f.create_soft_link(subgroup, field, target=str(target))
        else:
            sys.stderr.write('Skipped soft-link of legacy dataset to %s; node doesn\'t exist\n' % target)