Method with_extracted

src/objects/string.rs:540–546

(py: Python, obj: &PyObject, f: F)

/// In Python 2.7, `str` is expected to be UTF-8 encoded.
impl RefFromPyObject for str {
    fn with_extracted<F, R>(py: Python, obj: &PyObject, f: F) -> PyResult<R>
    where
        F: FnOnce(&str) -> R,
    {
        let s = obj.extract::<Cow<str>>(py)?;
        Ok(f(&s))
    }
}

/// For Python `bytes`, returns a reference to the existing immutable string data.