Moved Buffer into _typing

docs/reference/internal_modules.rst

@@ -33,6 +33,10 @@ Internal Modules
 Provides a convenient way to import type hints that are not available
 on some Python versions.
 
+.. py:class:: Buffer
+
+    Typing alias.
+
 .. py:class:: IntegralLike
 
     Typing alias.

src/PIL/GifImagePlugin.py

@@ -29,7 +29,6 @@ import itertools
 import math
 import os
 import subprocess
-import sys
 from enum import IntEnum
 from functools import cached_property
 from typing import IO, TYPE_CHECKING, Any, Literal, NamedTuple, Union
@@ -49,6 +48,7 @@ from ._binary import o16le as o16
 
 if TYPE_CHECKING:
     from . import _imaging
+    from ._typing import Buffer
 
 
 class LoadingStrategy(IntEnum):
@@ -1157,18 +1157,9 @@ def getdata(
     class Collector(BytesIO):
         data = []
 
-        if sys.version_info >= (3, 12):
-            from collections.abc import Buffer
-
-            def write(self, data: Buffer) -> int:
-                self.data.append(data)
-                return len(data)
-
-        else:
-
-            def write(self, data: Any) -> int:
-                self.data.append(data)
-                return len(data)
+        def write(self, data: Buffer) -> int:
+            self.data.append(data)
+            return len(data)
 
     im.load()  # make sure raster data is available
 

src/PIL/TiffImagePlugin.py

@@ -46,7 +46,6 @@ import logging
 import math
 import os
 import struct
-import sys
 import warnings
 from collections.abc import Iterator, MutableMapping
 from fractions import Fraction
@@ -63,7 +62,7 @@ from ._util import is_path
 from .TiffTags import TYPES
 
 if TYPE_CHECKING:
-    from ._typing import IntegralLike
+    from ._typing import Buffer, IntegralLike
 
 logger = logging.getLogger(__name__)
 
@@ -2108,16 +2107,8 @@ class AppendingTiffWriter(io.BytesIO):
             num_tags = self.readShort()
             self.f.seek(num_tags * 12, os.SEEK_CUR)
 
-    if sys.version_info >= (3, 12):
-        from collections.abc import Buffer
-
-        def write(self, data: Buffer, /) -> int:
-            return self.f.write(data)
-
-    else:
-
-        def write(self, data: Any, /) -> int:
-            return self.f.write(data)
+    def write(self, data: Buffer, /) -> int:
+        return self.f.write(data)
 
     def readShort(self) -> int:
         (value,) = struct.unpack(self.shortFmt, self.f.read(2))

src/PIL/_typing.py

@@ -15,6 +15,11 @@ if TYPE_CHECKING:
     except (ImportError, AttributeError):
         pass
 
+if sys.version_info >= (3, 12):
+    from collections.abc import Buffer
+else:
+    Buffer = Any
+
 if sys.version_info >= (3, 10):
     from typing import TypeGuard
 else:
@@ -40,4 +45,4 @@ class SupportsRead(Protocol[_T_co]):
 StrOrBytesPath = Union[str, bytes, "os.PathLike[str]", "os.PathLike[bytes]"]
 
 
-__all__ = ["IntegralLike", "StrOrBytesPath", "SupportsRead", "TypeGuard"]
+__all__ = ["Buffer", "IntegralLike", "StrOrBytesPath", "SupportsRead", "TypeGuard"]