Get dictionary from python

[robertosante]

Hey how do you actually get a dictionary from a python file I'm using from_code to run a py file but when I call the file I haven't figured out how to get the dictionary from python to rust

[robertosante]

I have the following code:

`
let from_python = Python::with_gil(|py| -> PyResult<()> {
let app: Py = PyModule::from_code(py, py_app, "", "")?
.getattr("run")?
.into();
let kwargs = vec![(key1, val1), (key2, val2), (key3, val3), (key4, val4), (key5, val5)];

    let result = app.call(py, (), Some(kwargs.into_py_dict(py)));
    println!("py: {:#?}", result?);
    Ok(())
});`

my file py_app returns a dictionary like

d = dict(); d['name'] = tr.beneficiario.nombre d['rfc'] = tr.beneficiario.rfc return d

on the print result? i get:
py: Py( 0x000000010d76e400, )

my question is how can i extract that result to something that i can use in rust

[birkenfeld]

It depends. If you want to keep working with it as a Python object, you can already use its methods from PyAny, and you can get to PyDict using result?.downcast::<PyDict>()?.

If you want to convert everything to Rust, i.e. a HashMap, use extract ().

[robertosante]

@birkenfeld thanks for your time! if i would like to keep it live how can i map it to a hashmap? just use extract and then assign to a hash literal?

[birkenfeld]

Yes, you assign to a variable where you specify the desired type:

let rust_map: HashMap<String, String> = result?.extract()?;

Of course, Rust maps being strong-typed, this only works if all key and value types are the same. Otherwise you can still keep some types as Python objects, e.g. HashMap<String, Py<PyAny>>.

[robertosante]

@birkenfeld got it thanks