Fair enough.  However I very much doubt there is a platform on which both of the TIOC{G,S}WINSZ defaults in this file are correct (regardless of whether this one is 2148037735 or -2146929561).

TIOCGWINSZ = getattr(termios, 'TIOCGWINSZ', 1074295912)
TIOCSWINSZ = getattr(termios, 'TIOCSWINSZ', -2146929561)