from __future__ import annotations

import urwid


def exit_on_q(key: str) -> None:
    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", " 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()