Demonstration of thread-safety enforced by Rust's type system

Cargo.toml

[package]
name = "typedemo"
version = "0.1.0"
authors = ["saethlin <[email protected]>"]

[dependencies.cpython]
version = "0.1"
features = ["extension-module"]

[lib]
crate-type = ["cdylib", "rlib"]

lib.rs

#[macro_use]
extern crate cpython;

use std::rc::Rc;

#[derive(Default)]
struct Example {
    thing: Rc<u32>,
}

mod py_interface {
    use cpython::PyResult;
    use Example;

    py_module_initializer!(example, initexample, PyInit_example, |py, m| {
        m.add_class::<PyExample>(py)?;
        Ok(())
    });

    py_class!(class PyExample |py| {
        data ex: Example;

        def __new__(_cls) -> PyResult<PyExample> {
            PyExample::create_instance(py, Example::default())
        }
    });
}