How can I keep Rust data when sending PyClass to python

[shenjackyuanjie]

I want to send this py class back to python
and use the HashMap<usize, SR1PartData> after
how can I get this part_structs from PyClass ( like fn get_rust_data)

    #[pyclass(name = "PartDatas")]
    pub struct PartDatas {
        pub part_structs: HashMap<usize, SR1PartData>
    }

    #[pymethods]
    impl PartDatas {
        #[new]
        pub fn py_new(py_part_data: &PyDict) -> PyResult<Self> {
            let datas: HashMap<usize, SR1PartData> = part_data_tp_SR1PartDatas(py_part_data)?;
            // let datas: HashMap<usize, SR1PartData> = HashMap::new();
            return Ok(PartDatas { part_structs: datas })
        }

        // pub fn get_rust_data(&self) -> PyResult<Box<T>> {
        //     return Ok(self.part_structs);
        // }
    }

[adamreichold]

I am not sure I understand the problem correctly, but did you try to put the get_rust_data method into a separate impl block with #[pymethods]? (I assume you want to access the internals from the Rust side, not from the Python side.)

[shenjackyuanjie]

oh! I will try it. thanks!

[shenjackyuanjie]

OH, my bad, I can just use part.part_structs if input type in PartDatas

#[pyfunction]
#[allow(unused_variables)]
pub fn better_update_parts(render: &PyAny, option: &PyAny, window: &PyAny, parts: &types::PartDatas) -> PyResult<bool> {
    if !render.getattr(intern!(render.py(), "rendered"))?.is_true()? {
        return Ok(false);
    }
    let dx: f64 = render.getattr(intern!(render.py(), "dx"))?.extract()?;
    let dy: f64 = render.getattr(intern!(render.py(), "dy"))?.extract()?;
    let x_center: f32 = window.getattr(intern!(window.py(), "width"))?.extract()?;
    let y_center: f32 = window.getattr(intern!(window.py(), "height"))?.extract()?;
    let x_center: f32 = x_center / 2.0;
    let y_center: f32 = y_center / 2.0;
    let datas: &HashMap<usize, SR1PartData> = &parts.part_structs;

    for keys in datas {
        println!("{}", keys.0);
    }

    if option.getattr("debug_d_pos")?.is_true()? {
        let line = render.getattr(intern!(render.py(), "debug_line"))?;
    }
    // for part in parts.
    Ok(true)
}

like this
thanks also!