Function py_decode_error

crates/stdlib/src/json.rs:681–694

(
        e: machinery::DecodeError,
        s: PyStrRef,
        vm: &VirtualMachine,
    )

    }

    fn py_decode_error(
        e: machinery::DecodeError,
        s: PyStrRef,
        vm: &VirtualMachine,
    ) -> PyBaseExceptionRef {
        let get_error = || -> PyResult<_> {
            let cls = vm.try_class("json", "JSONDecodeError")?;
            let exc = PyType::call(&cls, (e.msg, s, e.pos).into_args(vm), vm)?;
            exc.try_into_value(vm)
        };
        match get_error() {
            Ok(x) | Err(x) => x,
        }
    }

    #[pyfunction]
    fn scanstring(