def test_invalid_scalar_index(adata, index):
    # https://github.com/theislab/anndata/issues/619
    with pytest.raises(IndexError, match=r".*index.* out of range\."):
        _ = adata[index]
def __erase_empty_clusters(self):
        clusters, means, variances, pic, gaussians, rc = [], [], [], [], [], []