Improve many __(a)exit__ annotations (#9696)

stubs/Pillow/PIL/Image.pyi

@@ -1,4 +1,4 @@
-from _typeshed import Incomplete, SupportsRead, SupportsWrite
+from _typeshed import Incomplete, SupportsRead, SupportsWrite, Unused
 from collections.abc import Callable, Iterable, Iterator, MutableMapping, Sequence
 from enum import IntEnum
 from pathlib import Path
@@ -172,7 +172,7 @@ class Image:
     @property
     def size(self) -> tuple[int, int]: ...
     def __enter__(self) -> Self: ...
-    def __exit__(self, *args: object) -> None: ...
+    def __exit__(self, *args: Unused) -> None: ...
     def close(self) -> None: ...
     def __eq__(self, other: object) -> bool: ...
     def __getstate__(self) -> _ImageState: ...

stubs/Pillow/PIL/ImageFile.pyi

@@ -1,4 +1,4 @@
-from _typeshed import Incomplete
+from _typeshed import Incomplete, Unused
 from typing import Any, NoReturn
 from typing_extensions import Self
 
@@ -42,7 +42,7 @@ class Parser:
     decode: Any
     def feed(self, data) -> None: ...
     def __enter__(self) -> Self: ...
-    def __exit__(self, *args: object) -> None: ...
+    def __exit__(self, *args: Unused) -> None: ...
     def close(self) -> Image: ...
 
 class PyCodecState:

stubs/Pillow/PIL/PdfParser.pyi

@@ -1,6 +1,8 @@
 import collections
 from _typeshed import Incomplete
+from types import TracebackType
 from typing import Any
+from typing_extensions import Literal
 
 def encode_text(s: str) -> bytes: ...
 
@@ -95,7 +97,9 @@ class PdfParser:
         mode: str = ...,
     ) -> None: ...
     def __enter__(self): ...
-    def __exit__(self, exc_type, exc_value, traceback): ...
+    def __exit__(
+        self, exc_type: type[BaseException] | None, exc_value: BaseException | None, traceback: TracebackType | None
+    ) -> Literal[False]: ...
     def start_writing(self) -> None: ...
     def close_buf(self) -> None: ...
     def close(self) -> None: ...

stubs/Pillow/PIL/PngImagePlugin.pyi

@@ -1,4 +1,4 @@
-from _typeshed import Incomplete
+from _typeshed import Incomplete, Unused
 from enum import IntEnum
 from typing import Any, ClassVar
 from typing_extensions import Literal
@@ -33,7 +33,7 @@ class ChunkStream:
     def __init__(self, fp) -> None: ...
     def read(self): ...
     def __enter__(self): ...
-    def __exit__(self, *args) -> None: ...
+    def __exit__(self, *args: Unused) -> None: ...
     def close(self) -> None: ...
     def push(self, cid, pos, length) -> None: ...
     def call(self, cid, pos, length): ...

stubs/Pillow/PIL/TarIO.pyi

@@ -1,3 +1,4 @@
+from _typeshed import Unused
 from typing import Any
 
 from .ContainerIO import ContainerIO
@@ -6,5 +7,5 @@ class TarIO(ContainerIO):
     fh: Any
     def __init__(self, tarfile, file) -> None: ...
     def __enter__(self): ...
-    def __exit__(self, *args) -> None: ...
+    def __exit__(self, *args: Unused) -> None: ...
     def close(self) -> None: ...

stubs/Pillow/PIL/TiffImagePlugin.pyi

@@ -1,6 +1,7 @@
 from _typeshed import Incomplete
 from collections.abc import MutableMapping
 from numbers import Rational
+from types import TracebackType
 from typing import Any, ClassVar
 from typing_extensions import Literal
 
@@ -171,7 +172,9 @@ class AppendingTiffWriter:
     def finalize(self) -> None: ...
     def newFrame(self) -> None: ...
     def __enter__(self): ...
-    def __exit__(self, exc_type, exc_value, traceback): ...
+    def __exit__(
+        self, exc_type: type[BaseException] | None, exc_value: BaseException | None, traceback: TracebackType | None
+    ) -> Literal[False]: ...
     def tell(self): ...
     def seek(self, offset, whence=...): ...
     def goToEnd(self) -> None: ...