text: import urwid
  
  def exit_on_q(key):
      if key in ('q', 'Q'):
          raise urwid.ExitMainLoop()
  
  palette = [
      ('banner', 'black', 'light gray'),
      ('streak', 'black', 'dark red'),
      ('bg', 'black', 'dark blue'),]
  
  txt = urwid.Text(('banner', u" Hello World "), align='center')
  map1 = urwid.AttrMap(txt, 'streak')
  fill = urwid.Filler(map1)
  map2 = urwid.AttrMap(fill, 'bg')
  loop = urwid.MainLoop(map2, palette, unhandled_input=exit_on_q)
  loop.run()
  