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 __init__(self,title,richtext,text):
        self.title=title
        self.richtext=richtext
        self.text=text