> i use this to get updated versions of curses.COLS and curses.LINES in
> the fact of an curses.KEY_RESIZE event.

I didn't know this event. Is a key in a special keyboard? Or an event raised 
by some curses internals?

> Updates curses.LINES and curses.COLS

Your documentation is incomplete. You may reused this comment:

/* Internal helper used for updating curses.LINES, curses.COLS, 
 * _curses.LINES and _curses.COLS */

Oh I just realized that _curses functions have no documentation, great :-/

> It's my first day here on the issue tracker.

Welcome on the tracker ;-)