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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()
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