如何实现rust-cpython as_object()和into_object()？

use cpython::{Python, PyResult, PyObject, ObjectProtocol};

fn rust_to_python(py: Python, rust_value: RustType) -> PyResult<PyObject> {
    // 将rust_value转换为Python对象
    let py_object = pyo3::types::IntoPy<PyObject>::into_py(rust_value, py);
    Ok(py_object)
}

fn python_to_rust(py: Python, py_object: PyObject) -> PyResult<RustType> {
    // 将py_object转换为Rust类型
    let rust_value = py_object.extract::<RustType>(py)?;
    Ok(rust_value)
}

fn main() {
    Python::with_gil(|py| {
        // 将Rust类型转换为Python对象
        let rust_value: RustType = ...;
        let py_object = rust_to_python(py, rust_value).unwrap();

        // 将Python对象转换为Rust类型
        let rust_value = python_to_rust(py, py_object).unwrap();

        // 使用转换后的Rust类型进行其他操作
        ...
    });
}