rust-cpython

Usage

[dependencies]cpython ="0.7"

Example program displaying the value ofsys.version:

use cpython::{Python,PyDict,PyResult};fnmain(){let gil =Python::acquire_gil();hello(gil.python()).unwrap();}fnhello(py:Python) ->PyResult<()>{let sys = py.import("sys")?;let version:String = sys.get(py,"version")?.extract(py)?;let locals =PyDict::new(py);    locals.set_item(py,"os", py.import("os")?)?;let user:String = py.eval("os.getenv('USER') or os.getenv('USERNAME')",None,Some(&locals))?.extract(py)?;println!("Hello {}, I'm Python {}", user, version);Ok(())}

Example library with python bindings:

Note:

[lib]name ="rust2py"crate-type = ["cdylib"][dependencies.cpython]version ="0.7"features = ["extension-module"]

use cpython::{PyResult,Python, py_module_initializer, py_fn};// add bindings to the generated python module// N.B: names: "rust2py" must be the name of the `.so` or `.pyd` filepy_module_initializer!(rust2py, |py, m|{    m.add(py,"__doc__","This module is implemented in Rust.")?;    m.add(py,"sum_as_string", py_fn!(py, sum_as_string_py(a:i64, b:i64)))?;Ok(())});// logic implemented as a normal rust functionfnsum_as_string(a:i64,b:i64) ->String{format!("{}", a + b).to_string()}// rust-cpython aware function. All of our python interface could be// declared in a separate module.// Note that the py_fn!() macro automatically converts the arguments from// Python objects to Rust values; and the Rust return value back into a Python object.fnsum_as_string_py(_:Python,a:i64,b:i64) ->PyResult<String>{let out =sum_as_string(a, b);Ok(out)}

[target.x86_64-apple-darwin]rustflags = [  "-C", "link-arg=-undefined",  "-C", "link-arg=dynamic_lookup",]

Development