Method detach

crates/vm/src/stdlib/_io.rs:1700–1707

(zelf: PyRef<Self>, vm: &VirtualMachine)

        }
        #[pymethod]
        fn detach(zelf: PyRef<Self>, vm: &VirtualMachine) -> PyResult {
            vm.call_method(zelf.as_object(), "flush", ())?;
            let mut data = zelf.lock(vm)?;
            data.flags.insert(BufferedFlags::DETACHED);
            data.raw
                .take()
                .ok_or_else(|| vm.new_value_error("raw stream has been detached"))
        }

        #[pymethod]
        fn seekable(&self, vm: &VirtualMachine) -> PyResult {