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, *args, **kwargs):
        FloatConverter.__init__(self, *args, **kwargs)
        self.type_ = "float"
        self.regex = '-?\\d+(\\.\\d+)?'