Function delattr

crates/vm/src/stdlib/builtins.rs:446–454

(obj: PyObjectRef, attr: PyObjectRef, vm: &VirtualMachine)

    #[pyfunction]
    fn delattr(obj: PyObjectRef, attr: PyObjectRef, vm: &VirtualMachine) -> PyResult<()> {
        let attr = attr.try_to_ref::<PyStr>(vm).map_err(|_e| {
            vm.new_type_error(format!(
                "attribute name must be string, not '{}'",
                attr.class().name()
            ))
        })?;
        obj.del_attr(attr, vm)
    }

    #[pyfunction]
    fn dir(obj: OptionalArg<PyObjectRef>, vm: &VirtualMachine) -> PyResult<PyList> {