docs: def openpty():
      """openpty() -> (master_fd, slave_fd)
      Open a pty master/slave pair, using os.openpty() if possible."""
  
      try:
          return os.openpty()
      except (AttributeError, OSError):
          pass
      master_fd, slave_name = _open_terminal()
      slave_fd = slave_open(slave_name)
      return master_fd, slave_fd