def METHOD_NAME(X, n_clusters):
    """
    :param X: ndarray
    :param n_clusters: exact number of clusters to use
    :return:
    """
    from sklearn.cluster import KMeans
    k_means = KMeans(init='k-means++', n_clusters=n_clusters)
    k_means.fit(X)
    return k_means.labels_, k_means.cluster_centers_