def main()

in scripts/breakout.py [0:0]
69 lines of code
28 McCabe index (conditional complexity)

def main(stdscr):
    global height, width, ship

    for i in range(1, 8):
        curses.init_pair(i, i, 0)
    curses.curs_set(0)
    curses.raw()

    height, width = stdscr.getmaxyx()

    if height < 15 or width < 30:
        raise PowerOverwhelmingException(
            "Your computer is not powerful enough to run 'arc anoid'. "
            "It must support at least 30 columns and 15 rows of next-gen "
            "full-color 3D graphics.")

    status = curses.newwin(1, width, 0, 0)
    height -= 1
    game = curses.newwin(height, width, 1, 0)
    game.nodelay(1)
    game.keypad(1)

    grid[:] = [ [ None for x in range(width + 2) ] for y in range(height + 2) ]
    wall = Wall()
    for x in range(width + 2):
        grid[0][x] = wall
    for y in range(height + 2):
        grid[y][0] = grid[y][-1] = wall
    ship = Ship(width / 2, height - 5)
    entities.append(ship)

    colors = [ 1, 3, 2, 6, 4, 5 ]
    h = height / 10
    for x in range(1, width / 7 - 1):
        for y in range(1, 7):
            entities.append(Block(x * 7,
                                  y * h + x / 2 % 2,
                                  7,
                                  h,
                                  colors[y - 1]))

    while True:
        while select.select([ sys.stdin ], [], [], 0)[0]:
            key = game.getch()
            if key == curses.KEY_LEFT or key == ord('a') or key == ord('A'):
                ship.shift(-1)
            elif key == curses.KEY_RIGHT or key == ord('d') or key == ord('D'):
                ship.shift(1)
            elif key == ord(' '):
                ship.spawn()
            elif key == 0x1b or key == 3 or key == ord('q') or key == ord('Q'):
                return

        game.resize(height, width)
        game.erase()
        entities[:] = [ ent for ent in entities if ent.tick(game) ]

        status.hline(0, 0, curses.ACS_HLINE, width)
        status.addch(0, 2, curses.ACS_RTEE)
        status.addstr(' SCORE: ', curses.A_BOLD | curses.color_pair(4))
        status.addstr('%s/%s ' % (Block.killed, Block.total), curses.A_BOLD)
        status.addch(curses.ACS_VLINE)
        status.addstr(' DEATHS: ', curses.A_BOLD | curses.color_pair(4))
        status.addstr('%s ' % Ball.killed, curses.A_BOLD)
        status.addch(curses.ACS_LTEE)

        if Block.killed == Block.total:
            message = ' A WINNER IS YOU!! '
            i = int(time.time() / 0.8)
            for x in range(width):
                for y in range(6):
                    game.addch(height / 2 + y - 3 + (x / 8 + i) % 2, x,
                               curses.ACS_BLOCK,
                               curses.A_BOLD | curses.color_pair(colors[y]))
            game.addstr(height / 2, (width - len(message)) / 2, message,
                           curses.A_BOLD | curses.color_pair(7))

        game.refresh()
        status.refresh()
        time.sleep(0.05)