Remove use of typing.final

Author: mikeshardmind

pyproject.toml

@@ -90,6 +90,13 @@ convention = "numpy"
 "typing.runtime_checkable".msg = "Runtime checkable is fundamentally unsafe."
 "typing_extensions.runtime_checkable".msg = "Runtime checkable is fundamentally unsafe."
 
+# these don't work as deferred imports, intentionally, because type checkers are dumb
+# and require they be imported directly from typing to work, this breaks the deferred re-export.
+"typing.Final".msg = "see https://github.com/microsoft/pyright/issues/9664#issuecomment-2574042580"
+"typing_extensions.Final".msg = "see https://github.com/microsoft/pyright/issues/9664#issuecomment-2574042580"
+"typing.final".msg = "see https://github.com/microsoft/pyright/issues/9664#issuecomment-2574042580"
+"typing_extensions.final".msg = "see https://github.com/microsoft/pyright/issues/9664#issuecomment-2574042580"
+
 [project]
 name = "async-utils"
 description = "Various async utilities"

src/async_utils/_paramkey.py

@@ -23,7 +23,6 @@
 from . import _typings as t
 
 
-@t.final
 class _HK:
     __slots__ = ("_hashvalue", "_tup")
 
@@ -40,7 +39,7 @@ def __eq__(self, other: object) -> bool:
         return self._tup == other._tup
 
 
-_marker: t.Final[tuple[object]] = (object(),)
+_marker: tuple[object] = (object(),)
 
 
 def make_key(args: tuple[t.Any, ...], kwds: dict[t.Any, t.Any]) -> Hashable:

src/async_utils/_typings.py

@@ -29,15 +29,11 @@
 TYPE_CHECKING = False
 
 if TYPE_CHECKING:
-    from typing import Any, Final, Literal, Self, final
-else:
-
-    def final(f):  # noqa: ANN001
-        return f
+    from typing import Any, Literal, Self
 
 
 def __getattr__(name: str):
-    if name in {"Any", "Final", "Literal", "Self"}:
+    if name in {"Any", "Literal", "Self"}:
         import typing
 
         return getattr(typing, name)
@@ -46,4 +42,4 @@ def __getattr__(name: str):
     raise AttributeError(msg)
 
 
-__all__ = ["Any", "Final", "Literal", "Self", "final"]
+__all__ = ["Any", "Literal", "Self"]

src/async_utils/sig_service.py

@@ -34,7 +34,7 @@
 type HandleableSignals = t.Literal["SIGINT", "SIGTERM", "SIGBREAK", "SIGHUP"]
 type SignalTuple = tuple[HandleableSignals, ...]
 
-default_handled: t.Final = "SIGINT", "SIGTERM", "SIGBREAK"
+default_handled: SignalTuple = "SIGINT", "SIGTERM", "SIGBREAK"
 
 
 class SpecialExit(enum.IntEnum):