Macro cpython::py_exception [−][src]
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
#[macro_use] extern crate cpython; use cpython::{Python, PyDict}; 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(); }