Macro cpython::py_exception

macro_rules! py_exception {
    ($module: ident, $name: ident, $base: ty) => { ... };
    ($module: ident, $name: ident) => { ... };
}

Defines a new exception type.

Syntax

py_exception!(module, MyError)

• module is the name of the containing module.
• MyError is the name of the new exception type.

Example

use cpython::{Python, PyDict, py_exception};

py_exception!(mymodule, CustomError);

fn main() {
    let gil = Python::acquire_gil();
    let py = gil.python();
    let ctx = PyDict::new(py);

    ctx.set_item(py, "CustomError", py.get_type::<CustomError>()).unwrap();

    py.run("assert str(CustomError) == \"<class 'mymodule.CustomError'>\"", None, Some(&ctx)).unwrap();
    py.run("assert CustomError('oops').args == ('oops',)", None, Some(&ctx)).unwrap();
}