Method insert

crates/vm/src/builtins/list.rs:195–199

(&self, position: isize, element: PyObjectRef)

    #[pymethod]
    pub(crate) fn insert(&self, position: isize, element: PyObjectRef) {
        let mut elements = self.borrow_vec_mut();
        let position = elements.saturate_index(position);
        elements.insert(position, element);
    }

    fn concat(&self, other: &PyObject, vm: &VirtualMachine) -> PyResult<PyRef<Self>> {
        let other = other.downcast_ref::<Self>().ok_or_else(|| {