Curses screens, windows and pads are typed as curses.window, and the
widgets that may get no parent window take curses.window | None.
- EventHandler is generic over a ParamSpec, so each handler declares
the arguments it passes, and MenuView is generic over the item its
on_confirm hands out. Choice callbacks take no arguments.
- Scrollable is generic over its items, which DataTable and ListBox
fix to tuple[str, str] and str.
- random.choice() and choice_low() are generic over the sequence, so
the casts at their call sites are gone. BasicUserInterface.menu()
and util.first() are generic too.
- Signal callbacks and their payloads are Callable[..., object] and
object, since emit() only forwards them.
- JSON values in game_data are object and narrowed by isinstance,
and data files are Traversable.
- Signal handlers take an int and a FrameType | None, and
list_players() takes a TextIO.
- The focus_standout() context managers return
Generator[None, None, None].
Any remains in three places: Player.__setstate__, whose pickled
__dict__ holds values of every type; Focusable.__init__, a mixin that
passes *args and **kwargs through to the next class; and the values
load_game_data() collects, whose element type depends on the field
each one fills.
Python 3.10 is the minimum, so annotations use `X | None`, `list[X]`
and friends, enforced by ruff's pyupgrade rules. The remaining typing
names are imported directly, with abstract types coming from
collections.abc. first() is now generic over the item and default.
ruff format keeps black's style at the same line length, and ruff
check covers import sorting plus pycodestyle and pyflakes. Three
comments and a test regex are wrapped to fit 79 columns.
Dash