How do I forward the output of Python::attach code to the current process stdout?

[pawamoy]

I'm running some Python code from Rust with this:

        Python::attach(|py| {
            let module = py.import("some_module")?;
            module
                .call_method1("render", (content, id.location()))?
                .extract::<SomeText>()
        })

None of the print statements in the Python code print anything to the terminal. How do I forward the standard output of the Python execution to the Rust program standard output?

I'm only trying to debug things and I'd like to add print statements here and there to see what's going wrong 🙂

[pawamoy]

I got something working thanks to another discussion:

#[pyclass]
struct LoggingStdout;

#[pymethods]
impl LoggingStdout {
    fn write(&self, data: &str) {
        println!("stdout from python: {:?}", data);
    }

    fn flush(&self) {}
}

Python::attach(|py| {
    let sys = py.import("sys")?;
    let stdout = Py::new(py, LoggingStdout)?;
    sys.setattr("stdout", stdout)?;
    let module = py.import("some_module")?;
    module
        .call_method1("render", (content, id.location()))?
        .extract::<SomeText>()
})