Method next

src/objects/iterator.rs:72–84

Retrieves the next item from an iterator. Returns `None` when the iterator is exhausted. If an exception occurs, returns `Some(Err(..))`. Further next() calls after an exception occurs are likely to repeatedly result in the same exception.

(&mut self)

    /// Further next() calls after an exception occurs are likely
    /// to repeatedly result in the same exception.
    fn next(&mut self) -> Option<PyResult<PyObject>> {
        let py = self.py;
        match unsafe { PyObject::from_owned_ptr_opt(py, ffi::PyIter_Next(self.iter.as_ptr())) } {
            Some(obj) => Some(Ok(obj)),
            None => {
                if PyErr::occurred(py) {
                    Some(Err(PyErr::fetch(py)))
                } else {
                    None
                }
            }
        }
    }
}

#[cfg(test)]