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 _ignoring_sigint(self):
        with self._ignore_sigint_lock:
            self._check_sigint_gate_is_correct()
            self._threads_ignoring_sigint += 1
        try:
            yield
        finally:
            with self._ignore_sigint_lock:
                self._threads_ignoring_sigint -= 1
                self._check_sigint_gate_is_correct()