Function dup

crates/stdlib/src/socket.rs:3422–3430

(x: PyObjectRef, vm: &VirtualMachine)

    #[pyfunction]
    fn dup(x: PyObjectRef, vm: &VirtualMachine) -> Result<RawSocket, IoOrPyException> {
        let sock = get_raw_sock(x, vm)?;
        let sock = core::mem::ManuallyDrop::new(sock_from_raw(sock, vm)?);
        let newsock = sock.try_clone()?;
        let fd = into_sock_fileno(newsock);
        #[cfg(windows)]
        crate::vm::stdlib::nt::raw_set_handle_inheritable(fd as _, false)?;
        Ok(fd)
    }

    #[pyfunction]
    fn close(x: PyObjectRef, vm: &VirtualMachine) -> Result<(), IoOrPyException> {