import urwid


def exit_on_q(key):
    if key in ('q', 'Q'):
        raise urwid.ExitMainLoop()


txt = urwid.BigText(u" Greatness Awaits... ", urwid.HalfBlock5x4Font())
test = urwid.Padding(txt, 'center', None)
test = urwid.Filler(test, 'middle', None, 7)


loop = urwid.MainLoop(test, unhandled_input=exit_on_q)
loop.run()