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 forums():
    categories = Category.query.order_by(Category.position.asc()).all()
    return render_template("management/forums.html", categories=categories)