#![cfg(all(feature = "macros", not(PyPy)))] use pyo3::prelude::*; #[pyfunction] fn foo() -> usize { 123 } #[pymodule] fn module_with_functions(_py: Python<'_>, m: &PyModule) -> PyResult<()> { m.add_function(wrap_pyfunction!(foo, m)?).unwrap(); Ok(()) } #[cfg(not(PyPy))] #[test] fn test_module_append_to_inittab() { use pyo3::append_to_inittab; append_to_inittab!(module_with_functions); Python::with_gil(|py| { py.run( r#" import module_with_functions assert module_with_functions.foo() == 123 "#, None, None, ) .map_err(|e| e.print(py)) .unwrap(); }) }