Curses die-roller for Settlers of Catan

catan.py

#! /usr/bin/python

import random
import curses

KEY_ESCAPE = 27
KEY_ENTER  = 10
KEY_Q      = 81
KEY_q      = 113

def roll():
    return random.randint(1, 6)

def rolltwo():
    return roll() + roll()

def draw(screen, color, number):

    screen.move(0, 0)
    screen.erase()

    height, width = screen.getmaxyx()
    screen.move(height / 2, width / 2)

    screen.addstr(str(number), color)
    white = curses.color_pair(3)

    screen.move(height - 2, 0)
    screen.addstr("ENTER: roll", white)

    screen.move(height - 1, 0)
    screen.addstr("Q/q:   quit", white)

def curses_setup(screen):

    print '\033[?25l' # hide cursor

    curses.start_color()
    curses.init_pair(1, curses.COLOR_RED, curses.COLOR_BLACK)
    curses.init_pair(2, curses.COLOR_GREEN, curses.COLOR_BLACK)
    curses.init_pair(3, curses.COLOR_WHITE, curses.COLOR_BLACK)

    curses.noecho()
    screen.keypad(1)
    curses.cbreak()

    screen.move(0, 0)
    screen.erase()

def curses_teardown(screen):

    screen.move(0, 0)
    screen.erase()

    curses.nocbreak()
    screen.keypad(0)
    curses.echo()

    curses.endwin()

    print '\033[?25h' # show cursor

def main():

    random.seed()

    screen = curses.initscr()
    curses_setup(screen)

    dice         = rolltwo()
    color_parity = True

    try:
        while True:

            color_pair_id = 1 if color_parity else 2
            color         = curses.color_pair(color_pair_id)

            draw(screen, color, dice)

            key = screen.getch()

            if key == KEY_ENTER:
                color_parity = not color_parity
                dice         = rolltwo()

            elif key == KEY_ESCAPE or key == KEY_Q or key == KEY_q:
                break

    except KeyboardInterrupt as e:
        pass

    finally:
        curses_teardown(screen)

if __name__ == '__main__':
    main()

Works best with high terminal font size.