Merge branch 'main' into apng

.appveyor.yml

@@ -32,10 +32,10 @@ install:
 - curl -fsSL -o pillow-test-images.zip https://github.com/python-pillow/test-images/archive/main.zip
 - 7z x pillow-test-images.zip -oc:\
 - xcopy /S /Y c:\test-images-main\* c:\pillow\tests\images
-- curl -fsSL -o nasm-win64.zip https://raw.githubusercontent.com/python-pillow/pillow-depends/main/nasm-2.16.01-win64.zip
+- curl -fsSL -o nasm-win64.zip https://raw.githubusercontent.com/python-pillow/pillow-depends/main/nasm-2.16.03-win64.zip
 - 7z x nasm-win64.zip -oc:\
-- choco install ghostscript --version=10.3.0
+- choco install ghostscript --version=10.3.1
-- path c:\nasm-2.16.01;C:\Program Files\gs\gs10.00.0\bin;%PATH%
+- path c:\nasm-2.16.03;C:\Program Files\gs\gs10.03.1\bin;%PATH%
 - cd c:\pillow\winbuild\
 - ps: |
         c:\python38\python.exe c:\pillow\winbuild\build_prepare.py -v --depends=C:\pillow-depends\

.ci/requirements-cibw.txt

@@ -1 +1 @@
-cibuildwheel==2.18.1
+cibuildwheel==2.19.1

.github/workflows/macos-install.sh

@@ -7,11 +7,15 @@ brew install \
     ghostscript \
     libimagequant \
     libjpeg \
-    libraqm \
     libtiff \
     little-cms2 \
     openjpeg \
     webp
+if [[ "$ImageOS" == "macos13" ]]; then
+    brew install --ignore-dependencies libraqm
+else
+    brew install libraqm
+fi
 export PKG_CONFIG_PATH="/usr/local/opt/openblas/lib/pkgconfig"
 
 # TODO Update condition when cffi supports 3.13

.github/workflows/test-windows.yml

@@ -86,7 +86,7 @@ jobs:
         choco install nasm --no-progress
         echo "C:\Program Files\NASM" >> $env:GITHUB_PATH
 
-        choco install ghostscript --version=10.3.0 --no-progress
+        choco install ghostscript --version=10.3.1 --no-progress
         echo "C:\Program Files\gs\gs10.00.0\bin" >> $env:GITHUB_PATH
 
         # Install extra test images

.github/workflows/wheels-dependencies.sh

@@ -16,9 +16,9 @@ ARCHIVE_SDIR=pillow-depends-main
 
 # Package versions for fresh source builds
 FREETYPE_VERSION=2.13.2
-HARFBUZZ_VERSION=8.4.0
+HARFBUZZ_VERSION=8.5.0
 LIBPNG_VERSION=1.6.43
-JPEGTURBO_VERSION=3.0.2
+JPEGTURBO_VERSION=3.0.3
 OPENJPEG_VERSION=2.5.2
 XZ_VERSION=5.4.5
 TIFF_VERSION=4.6.0
@@ -33,9 +33,9 @@ if [[ -n "$IS_MACOS" ]] || [[ "$MB_ML_VER" != 2014 ]]; then
 else
     ZLIB_VERSION=1.2.8
 fi
-LIBWEBP_VERSION=1.3.2
+LIBWEBP_VERSION=1.4.0
 BZIP2_VERSION=1.0.8
-LIBXCB_VERSION=1.16.1
+LIBXCB_VERSION=1.17.0
 BROTLI_VERSION=1.1.0
 
 if [[ -n "$IS_MACOS" ]] && [[ "$CIBW_ARCHS" == "x86_64" ]]; then
@@ -70,7 +70,7 @@ function build {
     fi
     build_new_zlib
 
-    build_simple xcb-proto 1.16.0 https://xorg.freedesktop.org/archive/individual/proto
+    build_simple xcb-proto 1.17.0 https://xorg.freedesktop.org/archive/individual/proto
     if [ -n "$IS_MACOS" ]; then
         build_simple xorgproto 2024.1 https://www.x.org/pub/individual/proto
         build_simple libXau 1.0.11 https://www.x.org/pub/individual/lib

.readthedocs.yml

@@ -3,7 +3,7 @@ version: 2
 formats: [pdf]
 
 build:
-  os: ubuntu-22.04
+  os: ubuntu-lts-latest
   tools:
     python: "3"
   jobs:

CHANGES.rst

@@ -5,6 +5,36 @@ Changelog (Pillow)
 10.4.0 (unreleased)
 -------------------
 
+- Read IM and TIFF images as RGB, rather than RGBX #7997
+  [radarhere]
+
+- Only preserve TIFF IPTC_NAA_CHUNK tag if type is BYTE or UNDEFINED #7948
+  [radarhere]
+
+- Clarify ImageDraw2 error message when size is missing #8165
+  [radarhere]
+
+- Support unpacking more rawmodes to RGBA palettes #7966
+  [radarhere]
+
+- Removed support for Qt 5 #8159
+  [radarhere]
+
+- Improve ``ImageFont.freetype`` support for XDG directories on Linux #8135
+  [mamg22, radarhere]
+
+- Improved consistency of XMP handling #8069
+  [radarhere]
+
+- Use pkg-config to help find libwebp and raqm #8142
+  [radarhere]
+
+- Accept 't' suffix for libtiff version #8126, #8129
+  [radarhere]
+
+- Deprecate ImageDraw.getdraw hints parameter #8124
+  [radarhere, hugovk]
+
 - Added ImageDraw circle() #8085
   [void4, hugovk, radarhere]
 

Tests/bench_cffi_access.py

@@ -44,6 +44,7 @@ def test_direct() -> None:
     caccess = im.im.pixel_access(False)
     access = PyAccess.new(im, False)
 
+    assert access is not None
     assert caccess[(0, 0)] == access[(0, 0)]
 
     print(f"Size: {im.width}x{im.height}")

Tests/helper.py

@@ -18,7 +18,7 @@ from typing import Any, Callable, Sequence
 import pytest
 from packaging.version import parse as parse_version
 
-from PIL import Image, ImageMath, features
+from PIL import Image, ImageFile, ImageMath, features
 
 logger = logging.getLogger(__name__)
 
@@ -240,7 +240,7 @@ class PillowLeakTestCase:
 # helpers
 
 
-def fromstring(data: bytes) -> Image.Image:
+def fromstring(data: bytes) -> ImageFile.ImageFile:
     return Image.open(BytesIO(data))
 
 

Tests/test_color_lut.py

@@ -354,10 +354,10 @@ class TestColorLut3DCoreAPI:
 class TestColorLut3DFilter:
     def test_wrong_args(self) -> None:
         with pytest.raises(ValueError, match="should be either an integer"):
-            ImageFilter.Color3DLUT("small", [1])
+            ImageFilter.Color3DLUT("small", [1])  # type: ignore[arg-type]
 
         with pytest.raises(ValueError, match="should be either an integer"):
-            ImageFilter.Color3DLUT((11, 11), [1])
+            ImageFilter.Color3DLUT((11, 11), [1])  # type: ignore[arg-type]
 
         with pytest.raises(ValueError, match=r"in \[2, 65\] range"):
             ImageFilter.Color3DLUT((11, 11, 1), [1])

Tests/test_decompression_bomb.py

@@ -12,7 +12,7 @@ ORIGINAL_LIMIT = Image.MAX_IMAGE_PIXELS
 
 
 class TestDecompressionBomb:
-    def teardown_method(self, method) -> None:
+    def teardown_method(self) -> None:
         Image.MAX_IMAGE_PIXELS = ORIGINAL_LIMIT
 
     def test_no_warning_small_file(self) -> None:

Tests/test_features.py

@@ -38,7 +38,9 @@ def test_version() -> None:
             assert function(name) == version
             if name != "PIL":
                 if name == "zlib" and version is not None:
-                    version = version.replace(".zlib-ng", "")
+                    version = re.sub(".zlib-ng$", "", version)
+                elif name == "libtiff" and version is not None:
+                    version = re.sub("t$", "", version)
                 assert version is None or re.search(r"\d+(\.\d+)*$", version)
 
     for module in features.modules:
@@ -124,7 +126,7 @@ def test_unsupported_module() -> None:
 
 
 @pytest.mark.parametrize("supported_formats", (True, False))
-def test_pilinfo(supported_formats) -> None:
+def test_pilinfo(supported_formats: bool) -> None:
     buf = io.StringIO()
     features.pilinfo(buf, supported_formats=supported_formats)
     out = buf.getvalue()

Tests/test_file_bmp.py

@@ -140,7 +140,7 @@ def test_load_dib() -> None:
         (124, "g/pal8v5.bmp"),
     ),
 )
-def test_dib_header_size(header_size, path):
+def test_dib_header_size(header_size: int, path: str) -> None:
     image_path = "Tests/images/bmp/" + path
     with open(image_path, "rb") as fp:
         data = fp.read()[14:]

Tests/test_file_bufrstub.py

@@ -1,10 +1,11 @@
 from __future__ import annotations
 
 from pathlib import Path
+from typing import IO
 
 import pytest
 
-from PIL import BufrStubImagePlugin, Image
+from PIL import BufrStubImagePlugin, Image, ImageFile
 
 from .helper import hopper
 
@@ -50,30 +51,33 @@ def test_save(tmp_path: Path) -> None:
 
 
 def test_handler(tmp_path: Path) -> None:
-    class TestHandler:
+    class TestHandler(ImageFile.StubHandler):
         opened = False
         loaded = False
         saved = False
 
-        def open(self, im) -> None:
+        def open(self, im: ImageFile.StubImageFile) -> None:
             self.opened = True
 
-        def load(self, im):
+        def load(self, im: ImageFile.StubImageFile) -> Image.Image:
             self.loaded = True
             im.fp.close()
             return Image.new("RGB", (1, 1))
 
-        def save(self, im, fp, filename) -> None:
+        def is_loaded(self) -> bool:
+            return self.loaded
+
+        def save(self, im: Image.Image, fp: IO[bytes], filename: str) -> None:
             self.saved = True
 
     handler = TestHandler()
     BufrStubImagePlugin.register_handler(handler)
     with Image.open(TEST_FILE) as im:
         assert handler.opened
-        assert not handler.loaded
+        assert not handler.is_loaded()
 
         im.load()
-        assert handler.loaded
+        assert handler.is_loaded()
 
         temp_file = str(tmp_path / "temp.bufr")
         im.save(temp_file)

Tests/test_file_gif.py

@@ -53,6 +53,7 @@ def test_closed_file() -> None:
 
 def test_seek_after_close() -> None:
     im = Image.open("Tests/images/iss634.gif")
+    assert isinstance(im, GifImagePlugin.GifImageFile)
     im.load()
     im.close()
 
@@ -377,7 +378,8 @@ def test_save_netpbm_bmp_mode(tmp_path: Path) -> None:
         img = img.convert("RGB")
 
         tempfile = str(tmp_path / "temp.gif")
-        GifImagePlugin._save_netpbm(img, 0, tempfile)
+        b = BytesIO()
+        GifImagePlugin._save_netpbm(img, b, tempfile)
         with Image.open(tempfile) as reloaded:
             assert_image_similar(img, reloaded.convert("RGB"), 0)
 
@@ -388,7 +390,8 @@ def test_save_netpbm_l_mode(tmp_path: Path) -> None:
         img = img.convert("L")
 
         tempfile = str(tmp_path / "temp.gif")
-        GifImagePlugin._save_netpbm(img, 0, tempfile)
+        b = BytesIO()
+        GifImagePlugin._save_netpbm(img, b, tempfile)
         with Image.open(tempfile) as reloaded:
             assert_image_similar(img, reloaded.convert("L"), 0)
 
@@ -648,7 +651,7 @@ def test_dispose2_palette(tmp_path: Path) -> None:
             assert rgb_img.getpixel((50, 50)) == circle
 
             # Check that frame transparency wasn't added unnecessarily
-            assert img._frame_transparency is None
+            assert getattr(img, "_frame_transparency") is None
 
 
 def test_dispose2_diff(tmp_path: Path) -> None:

Tests/test_file_gribstub.py

@@ -5,7 +5,7 @@ from typing import IO
 
 import pytest
 
-from PIL import GribStubImagePlugin, Image
+from PIL import GribStubImagePlugin, Image, ImageFile
 
 from .helper import hopper
 
@@ -51,7 +51,7 @@ def test_save(tmp_path: Path) -> None:
 
 
 def test_handler(tmp_path: Path) -> None:
-    class TestHandler:
+    class TestHandler(ImageFile.StubHandler):
         opened = False
         loaded = False
         saved = False
@@ -64,6 +64,9 @@ def test_handler(tmp_path: Path) -> None:
             im.fp.close()
             return Image.new("RGB", (1, 1))
 
+        def is_loaded(self) -> bool:
+            return self.loaded
+
         def save(self, im: Image.Image, fp: IO[bytes], filename: str) -> None:
             self.saved = True
 
@@ -71,10 +74,10 @@ def test_handler(tmp_path: Path) -> None:
     GribStubImagePlugin.register_handler(handler)
     with Image.open(TEST_FILE) as im:
         assert handler.opened
-        assert not handler.loaded
+        assert not handler.is_loaded()
 
         im.load()
-        assert handler.loaded
+        assert handler.is_loaded()
 
         temp_file = str(tmp_path / "temp.grib")
         im.save(temp_file)

Tests/test_file_hdf5stub.py

@@ -1,11 +1,12 @@
 from __future__ import annotations
 
+from io import BytesIO
 from pathlib import Path
 from typing import IO
 
 import pytest
 
-from PIL import Hdf5StubImagePlugin, Image
+from PIL import Hdf5StubImagePlugin, Image, ImageFile
 
 TEST_FILE = "Tests/images/hdf5.h5"
 
@@ -41,7 +42,7 @@ def test_load() -> None:
 def test_save() -> None:
     # Arrange
     with Image.open(TEST_FILE) as im:
-        dummy_fp = None
+        dummy_fp = BytesIO()
         dummy_filename = "dummy.filename"
 
         # Act / Assert: stub cannot save without an implemented handler
@@ -52,7 +53,7 @@ def test_save() -> None:
 
 
 def test_handler(tmp_path: Path) -> None:
-    class TestHandler:
+    class TestHandler(ImageFile.StubHandler):
         opened = False
         loaded = False
         saved = False
@@ -65,6 +66,9 @@ def test_handler(tmp_path: Path) -> None:
             im.fp.close()
             return Image.new("RGB", (1, 1))
 
+        def is_loaded(self) -> bool:
+            return self.loaded
+
         def save(self, im: Image.Image, fp: IO[bytes], filename: str) -> None:
             self.saved = True
 
@@ -72,10 +76,10 @@ def test_handler(tmp_path: Path) -> None:
     Hdf5StubImagePlugin.register_handler(handler)
     with Image.open(TEST_FILE) as im:
         assert handler.opened
-        assert not handler.loaded
+        assert not handler.is_loaded()
 
         im.load()
-        assert handler.loaded
+        assert handler.is_loaded()
 
         temp_file = str(tmp_path / "temp.h5")
         im.save(temp_file)

Tests/test_file_jpeg.py

@@ -171,7 +171,7 @@ class TestFileJpeg:
         [TEST_FILE, "Tests/images/pil_sample_cmyk.jpg"],
     )
     def test_dpi(self, test_image_path: str) -> None:
-        def test(xdpi: int, ydpi: int | None = None):
+        def test(xdpi: int, ydpi: int | None = None) -> tuple[int, int] | None:
             with Image.open(test_image_path) as im:
                 im = self.roundtrip(im, dpi=(xdpi, ydpi or xdpi))
             return im.info.get("dpi")
@@ -443,7 +443,9 @@ class TestFileJpeg:
         assert_image(im1, im2.mode, im2.size)
 
     def test_subsampling(self) -> None:
-        def getsampling(im: JpegImagePlugin.JpegImageFile):
+        def getsampling(
+            im: JpegImagePlugin.JpegImageFile,
+        ) -> tuple[int, int, int, int, int, int]:
             layer = im.layer
             return layer[0][1:3] + layer[1][1:3] + layer[2][1:3]
 
@@ -699,7 +701,7 @@ class TestFileJpeg:
     def test_save_cjpeg(self, tmp_path: Path) -> None:
         with Image.open(TEST_FILE) as img:
             tempfile = str(tmp_path / "temp.jpg")
-            JpegImagePlugin._save_cjpeg(img, 0, tempfile)
+            JpegImagePlugin._save_cjpeg(img, BytesIO(), tempfile)
             # Default save quality is 75%, so a tiny bit of difference is alright
             assert_image_similar_tofile(img, tempfile, 17)
 
@@ -917,24 +919,25 @@ class TestFileJpeg:
         with Image.open("Tests/images/icc-after-SOF.jpg") as im:
             assert im.info["icc_profile"] == b"profile"
 
-    def test_jpeg_magic_number(self) -> None:
+    def test_jpeg_magic_number(self, monkeypatch: pytest.MonkeyPatch) -> None:
         size = 4097
         buffer = BytesIO(b"\xFF" * size)  # Many xFF bytes
-        buffer.max_pos = 0
+        max_pos = 0
         orig_read = buffer.read
 
-        def read(n=-1):
+        def read(n: int | None = -1) -> bytes:
+            nonlocal max_pos
             res = orig_read(n)
-            buffer.max_pos = max(buffer.max_pos, buffer.tell())
+            max_pos = max(max_pos, buffer.tell())
             return res
 
-        buffer.read = read
+        monkeypatch.setattr(buffer, "read", read)
         with pytest.raises(UnidentifiedImageError):
             with Image.open(buffer):
                 pass
 
         # Assert the entire file has not been read
-        assert 0 < buffer.max_pos < size
+        assert 0 < max_pos < size
 
     def test_getxmp(self) -> None:
         with Image.open("Tests/images/xmp_test.jpg") as im:
@@ -945,6 +948,7 @@ class TestFileJpeg:
                 ):
                     assert im.getxmp() == {}
             else:
+                assert "xmp" in im.info
                 xmp = im.getxmp()
 
                 description = xmp["xmpmeta"]["RDF"]["Description"]
@@ -1029,8 +1033,10 @@ class TestFileJpeg:
 
     def test_repr_jpeg(self) -> None:
         im = hopper()
+        b = im._repr_jpeg_()
+        assert b is not None
 
-        with Image.open(BytesIO(im._repr_jpeg_())) as repr_jpeg:
+        with Image.open(BytesIO(b)) as repr_jpeg:
             assert repr_jpeg.format == "JPEG"
             assert_image_similar(im, repr_jpeg, 17)
 

Tests/test_file_jpeg2k.py

@@ -460,7 +460,7 @@ def test_plt_marker() -> None:
         out.seek(length - 2, os.SEEK_CUR)
 
 
-def test_9bit():
+def test_9bit() -> None:
     with Image.open("Tests/images/9bit.j2k") as im:
         assert im.mode == "I;16"
         assert im.size == (128, 128)

Tests/test_file_libtiff.py

@@ -54,7 +54,7 @@ class TestFileLibTiff(LibTiffTestCase):
     def test_version(self) -> None:
         version = features.version_codec("libtiff")
         assert version is not None
-        assert re.search(r"\d+\.\d+\.\d+$", version)
+        assert re.search(r"\d+\.\d+\.\d+t?$", version)
 
     def test_g4_tiff(self, tmp_path: Path) -> None:
         """Test the ordinary file path load path"""

Tests/test_file_png.py

@@ -535,8 +535,10 @@ class TestFilePng:
 
     def test_repr_png(self) -> None:
         im = hopper()
+        b = im._repr_png_()
+        assert b is not None
 
-        with Image.open(BytesIO(im._repr_png_())) as repr_png:
+        with Image.open(BytesIO(b)) as repr_png:
             assert repr_png.format == "PNG"
             assert_image_equal(im, repr_png)
 
@@ -655,11 +657,12 @@ class TestFilePng:
             png.call(cid, 0, 0)
             ImageFile.LOAD_TRUNCATED_IMAGES = False
 
-    def test_specify_bits(self, tmp_path: Path) -> None:
+    @pytest.mark.parametrize("save_all", (True, False))
+    def test_specify_bits(self, save_all: bool, tmp_path: Path) -> None:
         im = hopper("P")
 
         out = str(tmp_path / "temp.png")
-        im.save(out, bits=4)
+        im.save(out, bits=4, save_all=save_all)
 
         with Image.open(out) as reloaded:
             assert len(reloaded.png.im_palette[1]) == 48
@@ -683,6 +686,7 @@ class TestFilePng:
                 ):
                     assert im.getxmp() == {}
             else:
+                assert "xmp" in im.info
                 xmp = im.getxmp()
 
                 description = xmp["xmpmeta"]["RDF"]["Description"]
@@ -767,16 +771,12 @@ class TestFilePng:
     def test_save_stdout(self, buffer: bool) -> None:
         old_stdout = sys.stdout
 
-        if buffer:
-
         class MyStdOut:
             buffer = BytesIO()
 
-            mystdout = MyStdOut()
+        mystdout: MyStdOut | BytesIO = MyStdOut() if buffer else BytesIO()
-        else:
-            mystdout = BytesIO()
 
-        sys.stdout = mystdout
+        sys.stdout = mystdout  # type: ignore[assignment]
 
         with Image.open(TEST_PNG_FILE) as im:
             im.save(sys.stdout, "PNG")
@@ -784,7 +784,7 @@ class TestFilePng:
         # Reset stdout
         sys.stdout = old_stdout
 
-        if buffer:
+        if isinstance(mystdout, MyStdOut):
             mystdout = mystdout.buffer
         with Image.open(mystdout) as reloaded:
             assert_image_equal_tofile(reloaded, TEST_PNG_FILE)

Tests/test_file_ppm.py

@@ -368,16 +368,12 @@ def test_mimetypes(tmp_path: Path) -> None:
 def test_save_stdout(buffer: bool) -> None:
     old_stdout = sys.stdout
 
-    if buffer:
-
     class MyStdOut:
         buffer = BytesIO()
 
-        mystdout = MyStdOut()
+    mystdout: MyStdOut | BytesIO = MyStdOut() if buffer else BytesIO()
-    else:
-        mystdout = BytesIO()
 
-    sys.stdout = mystdout
+    sys.stdout = mystdout  # type: ignore[assignment]
 
     with Image.open(TEST_FILE) as im:
         im.save(sys.stdout, "PPM")
@@ -385,7 +381,7 @@ def test_save_stdout(buffer: bool) -> None:
     # Reset stdout
     sys.stdout = old_stdout
 
-    if buffer:
+    if isinstance(mystdout, MyStdOut):
         mystdout = mystdout.buffer
     with Image.open(mystdout) as reloaded:
         assert_image_equal_tofile(reloaded, TEST_FILE)

Tests/test_file_psd.py

@@ -4,7 +4,7 @@ import warnings
 
 import pytest
 
-from PIL import Image, PsdImagePlugin, UnidentifiedImageError
+from PIL import Image, PsdImagePlugin
 
 from .helper import assert_image_equal_tofile, assert_image_similar, hopper, is_pypy
 
@@ -150,20 +150,26 @@ def test_combined_larger_than_size() -> None:
 @pytest.mark.parametrize(
     "test_file,raises",
     [
-        (
-            "Tests/images/timeout-1ee28a249896e05b83840ae8140622de8e648ba9.psd",
-            UnidentifiedImageError,
-        ),
-        (
-            "Tests/images/timeout-598843abc37fc080ec36a2699ebbd44f795d3a6f.psd",
-            UnidentifiedImageError,
-        ),
         ("Tests/images/timeout-c8efc3fded6426986ba867a399791bae544f59bc.psd", OSError),
         ("Tests/images/timeout-dedc7a4ebd856d79b4359bbcc79e8ef231ce38f6.psd", OSError),
     ],
 )
-def test_crashes(test_file: str, raises) -> None:
+def test_crashes(test_file: str, raises: type[Exception]) -> None:
     with open(test_file, "rb") as f:
         with pytest.raises(raises):
             with Image.open(f):
                 pass
+
+
+@pytest.mark.parametrize(
+    "test_file",
+    [
+        "Tests/images/timeout-1ee28a249896e05b83840ae8140622de8e648ba9.psd",
+        "Tests/images/timeout-598843abc37fc080ec36a2699ebbd44f795d3a6f.psd",
+    ],
+)
+def test_layer_crashes(test_file: str) -> None:
+    with open(test_file, "rb") as f:
+        with Image.open(f) as im:
+            with pytest.raises(SyntaxError):
+                im.layers

Tests/test_file_spider.py

@@ -105,6 +105,7 @@ def test_load_image_series() -> None:
     img_list = SpiderImagePlugin.loadImageSeries(file_list)
 
     # Assert
+    assert img_list is not None
     assert len(img_list) == 1
     assert isinstance(img_list[0], Image.Image)
     assert img_list[0].size == (128, 128)

Tests/test_file_tiff.py

@@ -113,14 +113,14 @@ class TestFileTiff:
             outfile = str(tmp_path / "temp.tif")
             im.save(outfile, save_all=True, append_images=[im], tiffinfo=im.tag_v2)
 
-    def test_seek_too_large(self):
+    def test_seek_too_large(self) -> None:
         with pytest.raises(ValueError, match="Unable to seek to frame"):
             Image.open("Tests/images/seek_too_large.tif")
 
     def test_set_legacy_api(self) -> None:
         ifd = TiffImagePlugin.ImageFileDirectory_v2()
         with pytest.raises(Exception) as e:
-            ifd.legacy_api = None
+            ifd.legacy_api = False
         assert str(e.value) == "Not allowing setting of legacy api"
 
     def test_xyres_tiff(self) -> None:
@@ -621,6 +621,19 @@ class TestFileTiff:
 
             assert_image_equal_tofile(im, tmpfile)
 
+    def test_iptc(self, tmp_path: Path) -> None:
+        # Do not preserve IPTC_NAA_CHUNK by default if type is LONG
+        outfile = str(tmp_path / "temp.tif")
+        im = hopper()
+        ifd = TiffImagePlugin.ImageFileDirectory_v2()
+        ifd[33723] = 1
+        ifd.tagtype[33723] = 4
+        im.tag_v2 = ifd
+        im.save(outfile)
+
+        with Image.open(outfile) as im:
+            assert 33723 not in im.tag_v2
+
     def test_rowsperstrip(self, tmp_path: Path) -> None:
         outfile = str(tmp_path / "temp.tif")
         im = hopper()
@@ -759,6 +772,7 @@ class TestFileTiff:
                 ):
                     assert im.getxmp() == {}
             else:
+                assert "xmp" in im.info
                 xmp = im.getxmp()
 
                 description = xmp["xmpmeta"]["RDF"]["Description"]

Tests/test_file_tiff_metadata.py

@@ -11,7 +11,11 @@ from PIL.TiffImagePlugin import IFDRational
 
 from .helper import assert_deep_equal, hopper
 
-TAG_IDS = {info.name: info.value for info in TiffTags.TAGS_V2.values()}
+TAG_IDS: dict[str, int] = {
+    info.name: info.value
+    for info in TiffTags.TAGS_V2.values()
+    if info.value is not None
+}
 
 
 def test_rt_metadata(tmp_path: Path) -> None:
@@ -411,8 +415,8 @@ def test_empty_values() -> None:
     info = TiffImagePlugin.ImageFileDirectory_v2(head)
     info.load(data)
     # Should not raise ValueError.
-    info = dict(info)
+    info_dict = dict(info)
-    assert 33432 in info
+    assert 33432 in info_dict
 
 
 def test_photoshop_info(tmp_path: Path) -> None:

Tests/test_file_webp.py

@@ -5,6 +5,7 @@ import re
 import sys
 import warnings
 from pathlib import Path
+from typing import Any
 
 import pytest
 
@@ -70,7 +71,9 @@ class TestFileWebp:
             # dwebp -ppm ../../Tests/images/hopper.webp -o hopper_webp_bits.ppm
             assert_image_similar_tofile(image, "Tests/images/hopper_webp_bits.ppm", 1.0)
 
-    def _roundtrip(self, tmp_path: Path, mode, epsilon, args={}) -> None:
+    def _roundtrip(
+        self, tmp_path: Path, mode: str, epsilon: float, args: dict[str, Any] = {}
+    ) -> None:
         temp_file = str(tmp_path / "temp.webp")
 
         hopper(mode).save(temp_file, **args)
@@ -198,7 +201,9 @@ class TestFileWebp:
         (0, (0,), (-1, 0, 1, 2), (253, 254, 255, 256)),
     )
     @skip_unless_feature("webp_anim")
-    def test_invalid_background(self, background, tmp_path: Path) -> None:
+    def test_invalid_background(
+        self, background: int | tuple[int, ...], tmp_path: Path
+    ) -> None:
         temp_file = str(tmp_path / "temp.webp")
         im = hopper()
         with pytest.raises(OSError):

Tests/test_file_webp_animated.py

@@ -69,7 +69,7 @@ def test_write_animation_RGB(tmp_path: Path) -> None:
     are visually similar to the originals.
     """
 
-    def check(temp_file) -> None:
+    def check(temp_file: str) -> None:
         with Image.open(temp_file) as im:
             assert im.n_frames == 2
 

Tests/test_file_webp_metadata.py

@@ -129,6 +129,7 @@ def test_getxmp() -> None:
             ):
                 assert im.getxmp() == {}
         else:
+            assert "xmp" in im.info
             assert (
                 im.getxmp()["xmpmeta"]["xmptk"]
                 == "Adobe XMP Core 5.3-c011 66.145661, 2012/02/06-14:56:27        "

Tests/test_file_wmf.py

@@ -1,10 +1,11 @@
 from __future__ import annotations
 
 from pathlib import Path
+from typing import IO
 
 import pytest
 
-from PIL import Image, WmfImagePlugin
+from PIL import Image, ImageFile, WmfImagePlugin
 
 from .helper import assert_image_similar_tofile, hopper
 
@@ -34,10 +35,13 @@ def test_load() -> None:
 
 
 def test_register_handler(tmp_path: Path) -> None:
-    class TestHandler:
+    class TestHandler(ImageFile.StubHandler):
         methodCalled = False
 
-        def save(self, im, fp, filename) -> None:
+        def load(self, im: ImageFile.StubImageFile) -> Image.Image:
+            return Image.new("RGB", (1, 1))
+
+        def save(self, im: Image.Image, fp: IO[bytes], filename: str) -> None:
             self.methodCalled = True
 
     handler = TestHandler()
@@ -70,7 +74,7 @@ def test_load_set_dpi() -> None:
 
 
 @pytest.mark.parametrize("ext", (".wmf", ".emf"))
-def test_save(ext, tmp_path: Path) -> None:
+def test_save(ext: str, tmp_path: Path) -> None:
     im = hopper()
 
     tmpfile = str(tmp_path / ("temp" + ext))

Tests/test_font_leaks.py

@@ -34,7 +34,7 @@ class TestDefaultFontLeak(TestTTypeFontLeak):
 
     def test_leak(self) -> None:
         if features.check_module("freetype2"):
-            ImageFont.core = _util.DeferredError(ImportError)
+            ImageFont.core = _util.DeferredError(ImportError("Disabled for testing"))
         try:
             default_font = ImageFont.load_default()
         finally:

Tests/test_image.py

@@ -8,7 +8,7 @@ import sys
 import tempfile
 import warnings
 from pathlib import Path
-from typing import IO
+from typing import IO, Any
 
 import pytest
 
@@ -152,7 +152,7 @@ class TestImage:
 
     def test_stringio(self) -> None:
         with pytest.raises(ValueError):
-            with Image.open(io.StringIO()):
+            with Image.open(io.StringIO()):  # type: ignore[arg-type]
                 pass
 
     def test_pathlib(self, tmp_path: Path) -> None:
@@ -175,11 +175,19 @@ class TestImage:
     def test_fp_name(self, tmp_path: Path) -> None:
         temp_file = str(tmp_path / "temp.jpg")
 
-        class FP:
+        class FP(io.BytesIO):
             name: str
 
-            def write(self, b: bytes) -> None:
+            if sys.version_info >= (3, 12):
-                pass
+                from collections.abc import Buffer
+
+                def write(self, data: Buffer) -> int:
+                    return len(data)
+
+            else:
+
+                def write(self, data: Any) -> int:
+                    return len(data)
 
         fp = FP()
         fp.name = temp_file
@@ -393,13 +401,13 @@ class TestImage:
 
         # errors
         with pytest.raises(ValueError):
-            source.alpha_composite(over, "invalid source")
+            source.alpha_composite(over, "invalid destination")  # type: ignore[arg-type]
         with pytest.raises(ValueError):
-            source.alpha_composite(over, (0, 0), "invalid destination")
+            source.alpha_composite(over, (0, 0), "invalid source")  # type: ignore[arg-type]
         with pytest.raises(ValueError):
-            source.alpha_composite(over, 0)
+            source.alpha_composite(over, 0)  # type: ignore[arg-type]
         with pytest.raises(ValueError):
-            source.alpha_composite(over, (0, 0), 0)
+            source.alpha_composite(over, (0, 0), 0)  # type: ignore[arg-type]
         with pytest.raises(ValueError):
             source.alpha_composite(over, (0, 0), (0, -1))
 
@@ -909,6 +917,10 @@ class TestImage:
                     assert tag not in exif.get_ifd(0x8769)
                 assert exif.get_ifd(0xA005)
 
+    def test_empty_xmp(self) -> None:
+        with Image.open("Tests/images/hopper.gif") as im:
+            assert im.getxmp() == {}
+
     @pytest.mark.parametrize("size", ((1, 0), (0, 1), (0, 0)))
     def test_zero_tobytes(self, size: tuple[int, int]) -> None:
         im = Image.new("RGB", size)

Tests/test_image_access.py

@@ -259,6 +259,7 @@ class TestCffi(AccessTest):
         caccess = im.im.pixel_access(False)
         with pytest.warns(DeprecationWarning):
             access = PyAccess.new(im, False)
+        assert access is not None
 
         w, h = im.size
         for x in range(0, w, 10):
@@ -289,6 +290,7 @@ class TestCffi(AccessTest):
         caccess = im.im.pixel_access(False)
         with pytest.warns(DeprecationWarning):
             access = PyAccess.new(im, False)
+        assert access is not None
 
         w, h = im.size
         for x in range(0, w, 10):
@@ -299,6 +301,8 @@ class TestCffi(AccessTest):
         # Attempt to set the value on a read-only image
         with pytest.warns(DeprecationWarning):
             access = PyAccess.new(im, True)
+        assert access is not None
+
         with pytest.raises(ValueError):
             access[(0, 0)] = color
 
@@ -341,6 +345,8 @@ class TestCffi(AccessTest):
             im = Image.new(mode, (1, 1))
             with pytest.warns(DeprecationWarning):
                 access = PyAccess.new(im, False)
+                assert access is not None
+
                 access.putpixel((0, 0), color)
 
                 if len(color) == 3:

Tests/test_image_array.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import Any
+from typing import TYPE_CHECKING, Any
 
 import pytest
 from packaging.version import parse as parse_version
@@ -13,13 +13,16 @@ numpy = pytest.importorskip("numpy", reason="NumPy not installed")
 
 im = hopper().resize((128, 100))
 
+if TYPE_CHECKING:
+    import numpy.typing as npt
+
 
 def test_toarray() -> None:
     def test(mode: str) -> tuple[tuple[int, ...], str, int]:
         ai = numpy.array(im.convert(mode))
         return ai.shape, ai.dtype.str, ai.nbytes
 
-    def test_with_dtype(dtype) -> None:
+    def test_with_dtype(dtype: npt.DTypeLike) -> None:
         ai = numpy.array(im, dtype=dtype)
         assert ai.dtype == dtype
 

Tests/test_image_draft.py

@@ -16,7 +16,9 @@ def draft_roundtrip(
     im = Image.new(in_mode, in_size)
     data = tostring(im, "JPEG")
     im = fromstring(data)
-    mode, box = im.draft(req_mode, req_size)
+    result = im.draft(req_mode, req_size)
+    assert result is not None
+    box = result[1]
     scale, _ = im.decoderconfig
     assert box[:2] == (0, 0)
     assert (im.width - scale) < box[2] <= im.width

Tests/test_image_filter.py

@@ -137,7 +137,7 @@ def test_builtinfilter_p() -> None:
     builtin_filter = ImageFilter.BuiltinFilter()
 
     with pytest.raises(ValueError):
-        builtin_filter.filter(hopper("P"))
+        builtin_filter.filter(hopper("P").im)
 
 
 def test_kernel_not_enough_coefficients() -> None:

Tests/test_image_mode.py

@@ -68,7 +68,11 @@ def test_sanity() -> None:
     ),
 )
 def test_properties(
-    mode, expected_base, expected_type, expected_bands, expected_band_names
+    mode: str,
+    expected_base: str,
+    expected_type: str,
+    expected_bands: int,
+    expected_band_names: tuple[str, ...],
 ) -> None:
     assert Image.getmodebase(mode) == expected_base
     assert Image.getmodetype(mode) == expected_type

Tests/test_image_paste.py

@@ -338,3 +338,8 @@ class TestImagingPaste:
 
         im.copy().paste(im2)
         im.copy().paste(im2, (0, 0))
+
+    def test_incorrect_abbreviated_form(self) -> None:
+        im = Image.new("L", (1, 1))
+        with pytest.raises(ValueError):
+            im.paste(im, im, im)

Tests/test_image_point.py

@@ -61,4 +61,4 @@ def test_f_lut() -> None:
 def test_f_mode() -> None:
     im = hopper("F")
     with pytest.raises(ValueError):
-        im.point(None)
+        im.point([])

Tests/test_image_putpalette.py

@@ -79,6 +79,7 @@ def test_putpalette_with_alpha_values() -> None:
     (
         ("RGBA", (1, 2, 3, 4)),
         ("RGBAX", (1, 2, 3, 4, 0)),
+        ("ARGB", (4, 1, 2, 3)),
     ),
 )
 def test_rgba_palette(mode: str, palette: tuple[int, ...]) -> None:

Tests/test_image_quantize.py

@@ -98,7 +98,7 @@ def test_quantize_dither_diff() -> None:
 @pytest.mark.parametrize(
     "method", (Image.Quantize.MEDIANCUT, Image.Quantize.MAXCOVERAGE)
 )
-def test_quantize_kmeans(method) -> None:
+def test_quantize_kmeans(method: Image.Quantize) -> None:
     im = hopper()
     no_kmeans = im.quantize(kmeans=0, method=method)
     kmeans = im.quantize(kmeans=1, method=method)

Tests/test_image_reduce.py

@@ -56,10 +56,12 @@ def test_args_factor(size: int | tuple[int, int], expected: tuple[int, int]) ->
 @pytest.mark.parametrize(
     "size, expected_error", ((0, ValueError), (2.0, TypeError), ((0, 10), ValueError))
 )
-def test_args_factor_error(size: float | tuple[int, int], expected_error) -> None:
+def test_args_factor_error(
+    size: float | tuple[int, int], expected_error: type[Exception]
+) -> None:
     im = Image.new("L", (10, 10))
     with pytest.raises(expected_error):
-        im.reduce(size)
+        im.reduce(size)  # type: ignore[arg-type]
 
 
 @pytest.mark.parametrize(
@@ -86,10 +88,12 @@ def test_args_box(size: tuple[int, int, int, int], expected: tuple[int, int]) ->
         ((5, 0, 5, 10), ValueError),
     ),
 )
-def test_args_box_error(size: str | tuple[int, int, int, int], expected_error) -> None:
+def test_args_box_error(
+    size: str | tuple[int, int, int, int], expected_error: type[Exception]
+) -> None:
     im = Image.new("L", (10, 10))
     with pytest.raises(expected_error):
-        im.reduce(2, size).size
+        im.reduce(2, size).size  # type: ignore[arg-type]
 
 
 @pytest.mark.parametrize("mode", ("P", "1", "I;16"))

Tests/test_image_resample.py

@@ -445,7 +445,7 @@ class TestCoreResampleBox:
         im.resize((32, 32), resample, (20, 20, 100, 20))
 
         with pytest.raises(TypeError, match="must be sequence of length 4"):
-            im.resize((32, 32), resample, (im.width, im.height))
+            im.resize((32, 32), resample, (im.width, im.height))  # type: ignore[arg-type]
 
         with pytest.raises(ValueError, match="can't be negative"):
             im.resize((32, 32), resample, (-20, 20, 100, 100))

Tests/test_image_rotate.py

@@ -124,8 +124,8 @@ def test_fastpath_translate() -> None:
 def test_center() -> None:
     im = hopper()
     rotate(im, im.mode, 45, center=(0, 0))
-    rotate(im, im.mode, 45, translate=(im.size[0] / 2, 0))
+    rotate(im, im.mode, 45, translate=(im.size[0] // 2, 0))
-    rotate(im, im.mode, 45, center=(0, 0), translate=(im.size[0] / 2, 0))
+    rotate(im, im.mode, 45, center=(0, 0), translate=(im.size[0] // 2, 0))
 
 
 def test_rotate_no_fill() -> None:

Tests/test_image_thumbnail.py

@@ -16,7 +16,7 @@ from .helper import (
 
 def test_sanity() -> None:
     im = hopper()
-    assert im.thumbnail((100, 100)) is None
+    im.thumbnail((100, 100))
 
     assert im.size == (100, 100)
 
@@ -111,7 +111,9 @@ def test_load_first_unless_jpeg() -> None:
     with Image.open("Tests/images/hopper.jpg") as im:
         draft = im.draft
 
-        def im_draft(mode: str, size: tuple[int, int]):
+        def im_draft(
+            mode: str, size: tuple[int, int]
+        ) -> tuple[str, tuple[int, int, float, float]] | None:
             result = draft(mode, size)
             assert result is not None
 

Tests/test_imagecms.py

@@ -103,7 +103,7 @@ def test_sanity() -> None:
 
 
 def test_flags() -> None:
-    assert ImageCms.Flags.NONE == 0
+    assert ImageCms.Flags.NONE.value == 0
     assert ImageCms.Flags.GRIDPOINTS(0) == ImageCms.Flags.NONE
     assert ImageCms.Flags.GRIDPOINTS(256) == ImageCms.Flags.NONE
 
@@ -569,9 +569,9 @@ def assert_aux_channel_preserved(
             for delta in nine_grid_deltas:
                 channel_data.paste(
                     channel_pattern,
-                    tuple(
+                    (
-                        paste_offset[c] + delta[c] * channel_pattern.size[c]
+                        paste_offset[0] + delta[0] * channel_pattern.size[0],
-                        for c in range(2)
+                        paste_offset[1] + delta[1] * channel_pattern.size[1],
                     ),
                 )
             chans.append(channel_data)
@@ -642,7 +642,8 @@ def test_auxiliary_channels_isolated() -> None:
                 # convert with and without AUX data, test colors are equal
                 src_colorSpace = cast(Literal["LAB", "XYZ", "sRGB"], src_format[1])
                 source_profile = ImageCms.createProfile(src_colorSpace)
-                destination_profile = ImageCms.createProfile(dst_format[1])
+                dst_colorSpace = cast(Literal["LAB", "XYZ", "sRGB"], dst_format[1])
+                destination_profile = ImageCms.createProfile(dst_colorSpace)
                 source_image = src_format[3]
                 test_transform = ImageCms.buildTransform(
                     source_profile,

Tests/test_imagedraw.py

@@ -448,6 +448,7 @@ def test_shape1() -> None:
     x3, y3 = 95, 5
 
     # Act
+    assert ImageDraw.Outline is not None
     s = ImageDraw.Outline()
     s.move(x0, y0)
     s.curve(x1, y1, x2, y2, x3, y3)
@@ -469,6 +470,7 @@ def test_shape2() -> None:
     x3, y3 = 5, 95
 
     # Act
+    assert ImageDraw.Outline is not None
     s = ImageDraw.Outline()
     s.move(x0, y0)
     s.curve(x1, y1, x2, y2, x3, y3)
@@ -487,6 +489,7 @@ def test_transform() -> None:
     draw = ImageDraw.Draw(im)
 
     # Act
+    assert ImageDraw.Outline is not None
     s = ImageDraw.Outline()
     s.line(0, 0)
     s.transform((0, 0, 0, 0, 0, 0))
@@ -913,7 +916,12 @@ def test_rounded_rectangle_translucent(
 def test_floodfill(bbox: Coords) -> None:
     red = ImageColor.getrgb("red")
 
-    for mode, value in [("L", 1), ("RGBA", (255, 0, 0, 0)), ("RGB", red)]:
+    mode_values: list[tuple[str, int | tuple[int, ...]]] = [
+        ("L", 1),
+        ("RGBA", (255, 0, 0, 0)),
+        ("RGB", red),
+    ]
+    for mode, value in mode_values:
         # Arrange
         im = Image.new(mode, (W, H))
         draw = ImageDraw.Draw(im)
@@ -1429,6 +1437,7 @@ def test_same_color_outline(bbox: Coords) -> None:
     x2, y2 = 95, 50
     x3, y3 = 95, 5
 
+    assert ImageDraw.Outline is not None
     s = ImageDraw.Outline()
     s.move(x0, y0)
     s.curve(x1, y1, x2, y2, x3, y3)
@@ -1467,7 +1476,7 @@ def test_same_color_outline(bbox: Coords) -> None:
         (4, "square", {}),
         (8, "regular_octagon", {}),
         (4, "square_rotate_45", {"rotation": 45}),
-        (3, "triangle_width", {"width": 5, "outline": "yellow"}),
+        (3, "triangle_width", {"outline": "yellow", "width": 5}),
     ],
 )
 def test_draw_regular_polygon(
@@ -1477,7 +1486,10 @@ def test_draw_regular_polygon(
     filename = f"Tests/images/imagedraw_{polygon_name}.png"
     draw = ImageDraw.Draw(im)
     bounding_circle = ((W // 2, H // 2), 25)
-    draw.regular_polygon(bounding_circle, n_sides, fill="red", **args)
+    rotation = int(args.get("rotation", 0))
+    outline = args.get("outline")
+    width = int(args.get("width", 1))
+    draw.regular_polygon(bounding_circle, n_sides, rotation, "red", outline, width)
     assert_image_equal_tofile(im, filename)
 
 
@@ -1562,10 +1574,14 @@ def test_compute_regular_polygon_vertices(
     ],
 )
 def test_compute_regular_polygon_vertices_input_error_handling(
-    n_sides, bounding_circle, rotation, expected_error, error_message
+    n_sides: int,
+    bounding_circle: int | tuple[int | tuple[int] | str, ...],
+    rotation: int | str,
+    expected_error: type[Exception],
+    error_message: str,
 ) -> None:
     with pytest.raises(expected_error) as e:
-        ImageDraw._compute_regular_polygon_vertices(bounding_circle, n_sides, rotation)
+        ImageDraw._compute_regular_polygon_vertices(bounding_circle, n_sides, rotation)  # type: ignore[arg-type]
     assert str(e.value) == error_message
 
 
@@ -1624,3 +1640,8 @@ def test_incorrectly_ordered_coordinates(xy: tuple[int, int, int, int]) -> None:
         draw.rectangle(xy)
     with pytest.raises(ValueError):
         draw.rounded_rectangle(xy)
+
+
+def test_getdraw() -> None:
+    with pytest.warns(DeprecationWarning):
+        ImageDraw.getdraw(None, [])

Tests/test_imagedraw2.py

@@ -51,9 +51,18 @@ def test_sanity() -> None:
     pen = ImageDraw2.Pen("blue", width=7)
     draw.line(list(range(10)), pen)
 
-    draw, handler = ImageDraw.getdraw(im)
+    draw2, handler = ImageDraw.getdraw(im)
+    assert draw2 is not None
     pen = ImageDraw2.Pen("blue", width=7)
-    draw.line(list(range(10)), pen)
+    draw2.line(list(range(10)), pen)
+
+
+def test_mode() -> None:
+    draw = ImageDraw2.Draw("L", (1, 1))
+    assert draw.image.mode == "L"
+
+    with pytest.raises(ValueError):
+        ImageDraw2.Draw("L")
 
 
 @pytest.mark.parametrize("bbox", BBOX)

Tests/test_imagefile.py

@@ -209,7 +209,7 @@ class MockPyDecoder(ImageFile.PyDecoder):
 
         super().__init__(mode, *args)
 
-    def decode(self, buffer):
+    def decode(self, buffer: bytes) -> tuple[int, int]:
         # eof
         return -1, 0
 
@@ -222,7 +222,7 @@ class MockPyEncoder(ImageFile.PyEncoder):
 
         super().__init__(mode, *args)
 
-    def encode(self, buffer):
+    def encode(self, bufsize: int) -> tuple[int, int, bytes]:
         return 1, 1, b""
 
     def cleanup(self) -> None:
@@ -351,7 +351,9 @@ class TestPyEncoder(CodecsTest):
             ImageFile._save(
                 im, fp, [("MOCK", (xoff, yoff, -10, yoff + ysize), 0, "RGB")]
             )
-        assert MockPyEncoder.last.cleanup_called
+        last: MockPyEncoder | None = MockPyEncoder.last
+        assert last
+        assert last.cleanup_called
 
         with pytest.raises(ValueError):
             ImageFile._save(
@@ -381,7 +383,7 @@ class TestPyEncoder(CodecsTest):
     def test_encode(self) -> None:
         encoder = ImageFile.PyEncoder(None)
         with pytest.raises(NotImplementedError):
-            encoder.encode(None)
+            encoder.encode(0)
 
         bytes_consumed, errcode = encoder.encode_to_pyfd()
         assert bytes_consumed == 0

Tests/test_imagefont.py

@@ -209,7 +209,7 @@ def test_getlength(
         assert length == length_raqm
 
 
-def test_float_size() -> None:
+def test_float_size(layout_engine: ImageFont.Layout) -> None:
     lengths = []
     for size in (48, 48.5, 49):
         f = ImageFont.truetype(
@@ -224,7 +224,7 @@ def test_render_multiline(font: ImageFont.FreeTypeFont) -> None:
     draw = ImageDraw.Draw(im)
     line_spacing = font.getbbox("A")[3] + 4
     lines = TEST_TEXT.split("\n")
-    y = 0
+    y: float = 0
     for line in lines:
         draw.text((0, y), line, font=font)
         y += line_spacing
@@ -494,8 +494,8 @@ def test_default_font() -> None:
     assert_image_equal_tofile(im, "Tests/images/default_font_freetype.png")
 
 
-@pytest.mark.parametrize("mode", (None, "1", "RGBA"))
+@pytest.mark.parametrize("mode", ("", "1", "RGBA"))
-def test_getbbox(font: ImageFont.FreeTypeFont, mode: str | None) -> None:
+def test_getbbox(font: ImageFont.FreeTypeFont, mode: str) -> None:
     assert (0, 4, 12, 16) == font.getbbox("A", mode)
 
 
@@ -548,7 +548,7 @@ def test_find_font(
 
             def loadable_font(
                 filepath: str, size: int, index: int, encoding: str, *args: Any
-            ):
+            ) -> ImageFont.FreeTypeFont:
                 _freeTypeFont = getattr(ImageFont, "_FreeTypeFont")
                 if filepath == path_to_fake:
                     return _freeTypeFont(FONT_PATH, size, index, encoding, *args)
@@ -564,6 +564,7 @@ def test_find_font(
     # catching syntax like errors
     monkeypatch.setattr(sys, "platform", platform)
     if platform == "linux":
+        monkeypatch.setenv("XDG_DATA_HOME", os.path.expanduser("~/.local/share"))
         monkeypatch.setenv("XDG_DATA_DIRS", "/usr/share/:/usr/local/share/")
 
     def fake_walker(path: str) -> list[tuple[str, list[str], list[str]]]:
@@ -1096,6 +1097,23 @@ def test_too_many_characters(font: ImageFont.FreeTypeFont) -> None:
         imagefont.getmask("A" * 1_000_001)
 
 
+def test_bytes(font: ImageFont.FreeTypeFont) -> None:
+    assert font.getlength(b"test") == font.getlength("test")
+
+    assert font.getbbox(b"test") == font.getbbox("test")
+
+    assert_image_equal(
+        Image.Image()._new(font.getmask(b"test")),
+        Image.Image()._new(font.getmask("test")),
+    )
+
+    assert_image_equal(
+        Image.Image()._new(font.getmask2(b"test")[0]),
+        Image.Image()._new(font.getmask2("test")[0]),
+    )
+    assert font.getmask2(b"test")[1] == font.getmask2("test")[1]
+
+
 @pytest.mark.parametrize(
     "test_file",
     [

Tests/test_imagefontpil.py

@@ -14,7 +14,7 @@ original_core = ImageFont.core
 
 def setup_module() -> None:
     if features.check_module("freetype2"):
-        ImageFont.core = _util.DeferredError(ImportError)
+        ImageFont.core = _util.DeferredError(ImportError("Disabled for testing"))
 
 
 def teardown_module() -> None:
@@ -76,3 +76,8 @@ def test_oom() -> None:
     font = ImageFont.ImageFont()
     font._load_pilfont_data(fp, Image.new("L", (1, 1)))
     font.getmask("A" * 1_000_000)
+
+
+def test_freetypefont_without_freetype() -> None:
+    with pytest.raises(ImportError):
+        ImageFont.truetype("Tests/fonts/FreeMono.ttf")

Tests/test_imagegrab.py

@@ -89,6 +89,7 @@ $bmp = New-Object Drawing.Bitmap 200, 200
         p.communicate()
 
         im = ImageGrab.grabclipboard()
+        assert isinstance(im, list)
         assert len(im) == 1
         assert os.path.samefile(im[0], "Tests/images/hopper.gif")
 
@@ -105,6 +106,7 @@ $ms = new-object System.IO.MemoryStream(, $bytes)
         p.communicate()
 
         im = ImageGrab.grabclipboard()
+        assert isinstance(im, Image.Image)
         assert_image_equal_tofile(im, "Tests/images/hopper.png")
 
     @pytest.mark.skipif(
@@ -120,6 +122,7 @@ $ms = new-object System.IO.MemoryStream(, $bytes)
         with open(image_path, "rb") as fp:
             subprocess.call(["wl-copy"], stdin=fp)
         im = ImageGrab.grabclipboard()
+        assert isinstance(im, Image.Image)
         assert_image_equal_tofile(im, image_path)
 
     @pytest.mark.skipif(

Tests/test_imageops.py

@@ -454,7 +454,7 @@ def test_autocontrast_cutoff() -> None:
     # Test the cutoff argument of autocontrast
     with Image.open("Tests/images/bw_gradient.png") as img:
 
-        def autocontrast(cutoff: int | tuple[int, int]):
+        def autocontrast(cutoff: int | tuple[int, int]) -> list[int]:
             return ImageOps.autocontrast(img, cutoff).histogram()
 
         assert autocontrast(10) == autocontrast((10, 10))

Tests/test_imageops_usm.py

@@ -58,7 +58,6 @@ def test_blur_formats(test_images: dict[str, ImageFile.ImageFile]) -> None:
     blur = ImageFilter.GaussianBlur
     with pytest.raises(ValueError):
         im.convert("1").filter(blur)
-    blur(im.convert("L"))
     with pytest.raises(ValueError):
         im.convert("I").filter(blur)
     with pytest.raises(ValueError):
@@ -102,7 +101,7 @@ def test_blur_accuracy(test_images: dict[str, ImageFile.ImageFile]) -> None:
         assert i.im.getpixel((x, y))[c] >= 250
     # Fuzzy match.
 
-    def gp(x, y):
+    def gp(x: int, y: int) -> tuple[int, ...]:
         return i.im.getpixel((x, y))
 
     assert 236 <= gp(7, 4)[0] <= 239

Tests/test_imagepalette.py

@@ -45,7 +45,7 @@ def test_getcolor() -> None:
 
     # Test unknown color specifier
     with pytest.raises(ValueError):
-        palette.getcolor("unknown")
+        palette.getcolor("unknown")  # type: ignore[arg-type]
 
 
 def test_getcolor_rgba_color_rgb_palette() -> None:
@@ -88,13 +88,13 @@ def test_file(tmp_path: Path) -> None:
 
     palette.save(f)
 
-    p = ImagePalette.load(f)
+    lut = ImagePalette.load(f)
 
     # load returns raw palette information
-    assert len(p[0]) == 768
+    assert len(lut[0]) == 768
-    assert p[1] == "RGB"
+    assert lut[1] == "RGB"
 
-    p = ImagePalette.raw(p[1], p[0])
+    p = ImagePalette.raw(lut[1], lut[0])
     assert isinstance(p, ImagePalette.ImagePalette)
     assert p.palette == palette.tobytes()
 

Tests/test_imageqt.py

@@ -41,13 +41,8 @@ def test_rgb() -> None:
     checkrgb(0, 0, 255)
 
 
-def test_image() -> None:
+@pytest.mark.parametrize("mode", ("1", "RGB", "RGBA", "L", "P", "I;16"))
-    modes = ["1", "RGB", "RGBA", "L", "P"]
+def test_image(mode: str) -> None:
-    qt_format = ImageQt.QImage.Format if ImageQt.qt_version == "6" else ImageQt.QImage
-    if hasattr(qt_format, "Format_Grayscale16"):  # Qt 5.13+
-        modes.append("I;16")
-
-    for mode in modes:
     im = hopper(mode)
     roundtripped_im = ImageQt.fromqimage(ImageQt.ImageQt(im))
     if mode not in ("RGB", "RGBA"):

Tests/test_imagewin_pointers.py

@@ -45,21 +45,22 @@ if is_win32():
     memcpy = ctypes.cdll.msvcrt.memcpy
     memcpy.argtypes = [ctypes.c_void_p, ctypes.c_void_p, ctypes.c_size_t]
 
-    CreateCompatibleDC = ctypes.windll.gdi32.CreateCompatibleDC
+    windll = getattr(ctypes, "windll")
+    CreateCompatibleDC = windll.gdi32.CreateCompatibleDC
     CreateCompatibleDC.argtypes = [ctypes.wintypes.HDC]
     CreateCompatibleDC.restype = ctypes.wintypes.HDC
 
-    DeleteDC = ctypes.windll.gdi32.DeleteDC
+    DeleteDC = windll.gdi32.DeleteDC
     DeleteDC.argtypes = [ctypes.wintypes.HDC]
 
-    SelectObject = ctypes.windll.gdi32.SelectObject
+    SelectObject = windll.gdi32.SelectObject
     SelectObject.argtypes = [ctypes.wintypes.HDC, ctypes.wintypes.HGDIOBJ]
     SelectObject.restype = ctypes.wintypes.HGDIOBJ
 
-    DeleteObject = ctypes.windll.gdi32.DeleteObject
+    DeleteObject = windll.gdi32.DeleteObject
     DeleteObject.argtypes = [ctypes.wintypes.HGDIOBJ]
 
-    CreateDIBSection = ctypes.windll.gdi32.CreateDIBSection
+    CreateDIBSection = windll.gdi32.CreateDIBSection
     CreateDIBSection.argtypes = [
         ctypes.wintypes.HDC,
         ctypes.c_void_p,
@@ -70,7 +71,7 @@ if is_win32():
     ]
     CreateDIBSection.restype = ctypes.wintypes.HBITMAP
 
-    def serialize_dib(bi, pixels) -> bytearray:
+    def serialize_dib(bi: BITMAPINFOHEADER, pixels: ctypes.c_void_p) -> bytearray:
         bf = BITMAPFILEHEADER()
         bf.bfType = 0x4D42
         bf.bfOffBits = ctypes.sizeof(bf) + bi.biSize

Tests/test_main.py

@@ -11,7 +11,7 @@ import pytest
     "args, report",
     ((["PIL"], False), (["PIL", "--report"], True), (["PIL.report"], True)),
 )
-def test_main(args, report) -> None:
+def test_main(args: list[str], report: bool) -> None:
     args = [sys.executable, "-m"] + args
     out = subprocess.check_output(args).decode("utf-8")
     lines = out.splitlines()

Tests/test_numpy.py

@@ -1,20 +1,25 @@
 from __future__ import annotations
 
 import warnings
+from typing import TYPE_CHECKING
 
 import pytest
 
-from PIL import Image
+from PIL import Image, _typing
 
 from .helper import assert_deep_equal, assert_image, hopper, skip_unless_feature
 
+if TYPE_CHECKING:
+    import numpy
+    import numpy.typing as npt
+else:
     numpy = pytest.importorskip("numpy", reason="NumPy not installed")
 
 TEST_IMAGE_SIZE = (10, 10)
 
 
 def test_numpy_to_image() -> None:
-    def to_image(dtype, bands: int = 1, boolean: int = 0) -> Image.Image:
+    def to_image(dtype: npt.DTypeLike, bands: int = 1, boolean: int = 0) -> Image.Image:
         if bands == 1:
             if boolean:
                 data = [0, 255] * 50
@@ -99,14 +104,14 @@ def test_1d_array() -> None:
     assert_image(Image.fromarray(a), "L", (1, 5))
 
 
-def _test_img_equals_nparray(img: Image.Image, np) -> None:
+def _test_img_equals_nparray(img: Image.Image, np_img: _typing.NumpyArray) -> None:
-    assert len(np.shape) >= 2
+    assert len(np_img.shape) >= 2
-    np_size = np.shape[1], np.shape[0]
+    np_size = np_img.shape[1], np_img.shape[0]
     assert img.size == np_size
     px = img.load()
     for x in range(0, img.size[0], int(img.size[0] / 10)):
         for y in range(0, img.size[1], int(img.size[1] / 10)):
-            assert_deep_equal(px[x, y], np[y, x])
+            assert_deep_equal(px[x, y], np_img[y, x])
 
 
 def test_16bit() -> None:
@@ -157,7 +162,7 @@ def test_save_tiff_uint16() -> None:
         ("HSV", numpy.uint8),
     ),
 )
-def test_to_array(mode: str, dtype) -> None:
+def test_to_array(mode: str, dtype: npt.DTypeLike) -> None:
     img = hopper(mode)
 
     # Resize to non-square
@@ -207,7 +212,7 @@ def test_putdata() -> None:
         numpy.float64,
     ),
 )
-def test_roundtrip_eye(dtype) -> None:
+def test_roundtrip_eye(dtype: npt.DTypeLike) -> None:
     arr = numpy.eye(10, dtype=dtype)
     numpy.testing.assert_array_equal(arr, numpy.array(Image.fromarray(arr)))
 

Tests/test_psdraw.py

@@ -54,16 +54,12 @@ def test_stdout(buffer: bool) -> None:
     # Temporarily redirect stdout
     old_stdout = sys.stdout
 
-    if buffer:
-
     class MyStdOut:
         buffer = BytesIO()
 
-        mystdout = MyStdOut()
+    mystdout: MyStdOut | BytesIO = MyStdOut() if buffer else BytesIO()
-    else:
-        mystdout = BytesIO()
 
-    sys.stdout = mystdout
+    sys.stdout = mystdout  # type: ignore[assignment]
 
     ps = PSDraw.PSDraw()
     _create_document(ps)
@@ -71,6 +67,6 @@ def test_stdout(buffer: bool) -> None:
     # Reset stdout
     sys.stdout = old_stdout
 
-    if buffer:
+    if isinstance(mystdout, MyStdOut):
         mystdout = mystdout.buffer
     assert mystdout.getvalue() != b""

Tests/test_qt_image_qapplication.py

@@ -46,7 +46,7 @@ def roundtrip(expected: Image.Image) -> None:
 @pytest.mark.skipif(not ImageQt.qt_is_installed, reason="Qt bindings are not installed")
 def test_sanity(tmp_path: Path) -> None:
     # Segfault test
-    app = QApplication([])
+    app: QApplication | None = QApplication([])
     ex = Example()
     assert app  # Silence warning
     assert ex  # Silence warning

Tests/test_shell_injection.py

@@ -1,8 +1,9 @@
 from __future__ import annotations
 
 import shutil
+from io import BytesIO
 from pathlib import Path
-from typing import Callable
+from typing import IO, Callable
 
 import pytest
 
@@ -22,11 +23,11 @@ class TestShellInjection:
         self,
         tmp_path: Path,
         src_img: Image.Image,
-        save_func: Callable[[Image.Image, int, str], None],
+        save_func: Callable[[Image.Image, IO[bytes], str | bytes], None],
     ) -> None:
         for filename in test_filenames:
             dest_file = str(tmp_path / filename)
-            save_func(src_img, 0, dest_file)
+            save_func(src_img, BytesIO(), dest_file)
             # If file can't be opened, shell injection probably occurred
             with Image.open(dest_file) as im:
                 im.load()

depends/install_imagequant.sh

@@ -2,7 +2,7 @@
 # install libimagequant
 
 archive_name=libimagequant
-archive_version=4.3.0
+archive_version=4.3.1
 
 archive=$archive_name-$archive_version
 

depends/install_webp.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 # install webp
 
-archive=libwebp-1.3.2
+archive=libwebp-1.4.0
 
 ./download-and-extract.sh $archive https://raw.githubusercontent.com/python-pillow/pillow-depends/main/$archive.tar.gz
 

docs/Makefile

@@ -9,9 +9,9 @@ PAPER         =
 BUILDDIR      = _build
 
 # Internal variables.
-PAPEROPT_a4     = -D latex_paper_size=a4
+PAPEROPT_a4     = --define latex_paper_size=a4
-PAPEROPT_letter = -D latex_paper_size=letter
+PAPEROPT_letter = --define latex_paper_size=letter
-ALLSPHINXOPTS   = -d $(BUILDDIR)/doctrees $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .
+ALLSPHINXOPTS   = --doctree-dir $(BUILDDIR)/doctrees $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .
 # the i18n builder cannot share the environment and doctrees with the others
 I18NSPHINXOPTS  = $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .
 
@@ -51,42 +51,42 @@ install-sphinx:
 .PHONY: html
 html:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b html -W --keep-going $(ALLSPHINXOPTS) $(BUILDDIR)/html
+	$(SPHINXBUILD) --builder html --fail-on-warning --keep-going $(ALLSPHINXOPTS) $(BUILDDIR)/html
 	@echo
 	@echo "Build finished. The HTML pages are in $(BUILDDIR)/html."
 
 .PHONY: dirhtml
 dirhtml:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b dirhtml $(ALLSPHINXOPTS) $(BUILDDIR)/dirhtml
+	$(SPHINXBUILD) --builder dirhtml $(ALLSPHINXOPTS) $(BUILDDIR)/dirhtml
 	@echo
 	@echo "Build finished. The HTML pages are in $(BUILDDIR)/dirhtml."
 
 .PHONY: singlehtml
 singlehtml:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b singlehtml $(ALLSPHINXOPTS) $(BUILDDIR)/singlehtml
+	$(SPHINXBUILD) --builder singlehtml $(ALLSPHINXOPTS) $(BUILDDIR)/singlehtml
 	@echo
 	@echo "Build finished. The HTML page is in $(BUILDDIR)/singlehtml."
 
 .PHONY: pickle
 pickle:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b pickle $(ALLSPHINXOPTS) $(BUILDDIR)/pickle
+	$(SPHINXBUILD) --builder pickle $(ALLSPHINXOPTS) $(BUILDDIR)/pickle
 	@echo
 	@echo "Build finished; now you can process the pickle files."
 
 .PHONY: json
 json:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b json $(ALLSPHINXOPTS) $(BUILDDIR)/json
+	$(SPHINXBUILD) --builder json $(ALLSPHINXOPTS) $(BUILDDIR)/json
 	@echo
 	@echo "Build finished; now you can process the JSON files."
 
 .PHONY: htmlhelp
 htmlhelp:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b htmlhelp $(ALLSPHINXOPTS) $(BUILDDIR)/htmlhelp
+	$(SPHINXBUILD) --builder htmlhelp $(ALLSPHINXOPTS) $(BUILDDIR)/htmlhelp
 	@echo
 	@echo "Build finished; now you can run HTML Help Workshop with the" \
 	      ".hhp project file in $(BUILDDIR)/htmlhelp."
@@ -94,7 +94,7 @@ htmlhelp:
 .PHONY: qthelp
 qthelp:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b qthelp $(ALLSPHINXOPTS) $(BUILDDIR)/qthelp
+	$(SPHINXBUILD) --builder qthelp $(ALLSPHINXOPTS) $(BUILDDIR)/qthelp
 	@echo
 	@echo "Build finished; now you can run "qcollectiongenerator" with the" \
 	      ".qhcp project file in $(BUILDDIR)/qthelp, like this:"
@@ -105,7 +105,7 @@ qthelp:
 .PHONY: devhelp
 devhelp:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b devhelp $(ALLSPHINXOPTS) $(BUILDDIR)/devhelp
+	$(SPHINXBUILD) --builder devhelp $(ALLSPHINXOPTS) $(BUILDDIR)/devhelp
 	@echo
 	@echo "Build finished."
 	@echo "To view the help file:"
@@ -116,14 +116,14 @@ devhelp:
 .PHONY: epub
 epub:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b epub $(ALLSPHINXOPTS) $(BUILDDIR)/epub
+	$(SPHINXBUILD) --builder epub $(ALLSPHINXOPTS) $(BUILDDIR)/epub
 	@echo
 	@echo "Build finished. The epub file is in $(BUILDDIR)/epub."
 
 .PHONY: latex
 latex:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
+	$(SPHINXBUILD) --builder latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
 	@echo
 	@echo "Build finished; the LaTeX files are in $(BUILDDIR)/latex."
 	@echo "Run \`make' in that directory to run these through (pdf)latex" \
@@ -132,7 +132,7 @@ latex:
 .PHONY: latexpdf
 latexpdf:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
+	$(SPHINXBUILD) --builder latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
 	@echo "Running LaTeX files through pdflatex..."
 	$(MAKE) -C $(BUILDDIR)/latex all-pdf
 	@echo "pdflatex finished; the PDF files are in $(BUILDDIR)/latex."
@@ -140,21 +140,21 @@ latexpdf:
 .PHONY: text
 text:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b text $(ALLSPHINXOPTS) $(BUILDDIR)/text
+	$(SPHINXBUILD) --builder text $(ALLSPHINXOPTS) $(BUILDDIR)/text
 	@echo
 	@echo "Build finished. The text files are in $(BUILDDIR)/text."
 
 .PHONY: man
 man:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b man $(ALLSPHINXOPTS) $(BUILDDIR)/man
+	$(SPHINXBUILD) --builder man $(ALLSPHINXOPTS) $(BUILDDIR)/man
 	@echo
 	@echo "Build finished. The manual pages are in $(BUILDDIR)/man."
 
 .PHONY: texinfo
 texinfo:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b texinfo $(ALLSPHINXOPTS) $(BUILDDIR)/texinfo
+	$(SPHINXBUILD) --builder texinfo $(ALLSPHINXOPTS) $(BUILDDIR)/texinfo
 	@echo
 	@echo "Build finished. The Texinfo files are in $(BUILDDIR)/texinfo."
 	@echo "Run \`make' in that directory to run these through makeinfo" \
@@ -163,7 +163,7 @@ texinfo:
 .PHONY: info
 info:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b texinfo $(ALLSPHINXOPTS) $(BUILDDIR)/texinfo
+	$(SPHINXBUILD) --builder texinfo $(ALLSPHINXOPTS) $(BUILDDIR)/texinfo
 	@echo "Running Texinfo files through makeinfo..."
 	make -C $(BUILDDIR)/texinfo info
 	@echo "makeinfo finished; the Info files are in $(BUILDDIR)/texinfo."
@@ -171,21 +171,21 @@ info:
 .PHONY: gettext
 gettext:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b gettext $(I18NSPHINXOPTS) $(BUILDDIR)/locale
+	$(SPHINXBUILD) --builder gettext $(I18NSPHINXOPTS) $(BUILDDIR)/locale
 	@echo
 	@echo "Build finished. The message catalogs are in $(BUILDDIR)/locale."
 
 .PHONY: changes
 changes:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b changes $(ALLSPHINXOPTS) $(BUILDDIR)/changes
+	$(SPHINXBUILD) --builder changes $(ALLSPHINXOPTS) $(BUILDDIR)/changes
 	@echo
 	@echo "The overview file is in $(BUILDDIR)/changes."
 
 .PHONY: linkcheck
 linkcheck:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b linkcheck $(ALLSPHINXOPTS) $(BUILDDIR)/linkcheck -j auto
+	$(SPHINXBUILD) --builder linkcheck $(ALLSPHINXOPTS) $(BUILDDIR)/linkcheck -j auto
 	@echo
 	@echo "Link check complete; look for any errors in the above output " \
 	      "or in $(BUILDDIR)/linkcheck/output.txt."
@@ -193,7 +193,7 @@ linkcheck:
 .PHONY: doctest
 doctest:
 	$(MAKE) install-sphinx
-	$(SPHINXBUILD) -b doctest $(ALLSPHINXOPTS) $(BUILDDIR)/doctest
+	$(SPHINXBUILD) --builder doctest $(ALLSPHINXOPTS) $(BUILDDIR)/doctest
 	@echo "Testing of doctests in the sources finished, look at the " \
 	      "results in $(BUILDDIR)/doctest/output.txt."
 

docs/deprecations.rst

@@ -115,6 +115,13 @@ Support for LibTIFF earlier than 4
 Support for LibTIFF earlier than version 4 has been deprecated.
 Upgrade to a newer version of LibTIFF instead.
 
+ImageDraw.getdraw hints parameter
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+.. deprecated:: 10.4.0
+
+The ``hints`` parameter in :py:meth:`~PIL.ImageDraw.getdraw()` has been deprecated.
+
 Removed features
 ----------------
 
@@ -279,7 +286,7 @@ Previously, the ``size`` methods returned a ``height`` that included the vertica
 offset of the text, while the new ``bbox`` methods distinguish this as a ``top``
 offset.
 
-.. image:: ./example/size_vs_bbox.png
+.. image:: ./example/size_vs_bbox.webp
     :alt: In bbox methods, top measures the vertical distance above the text, while bottom measures that plus the vertical distance of the text itself. In size methods, height also measures the vertical distance above the text plus the vertical distance of the text itself.
     :align: center
 

docs/example/anchors.py

@@ -26,5 +26,5 @@ if __name__ == "__main__":
                 d.line(((x * 200, y * 100), (x * 200, (y + 1) * 100)), "black", 3)
             if y != 0:
                 d.line(((x * 200, y * 100), ((x + 1) * 200, y * 100)), "black", 3)
-    im.save("docs/example/anchors.png")
+    im.save("docs/example/anchors.webp")
     im.show()

docs/handbook/concepts.rst

@@ -144,10 +144,12 @@ pixel, the Python Imaging Library provides different resampling *filters*.
 .. py:currentmodule:: PIL.Image
 
 .. data:: Resampling.NEAREST
+    :noindex:
 
     Pick one nearest pixel from the input image. Ignore all other input pixels.
 
 .. data:: Resampling.BOX
+    :noindex:
 
     Each pixel of source image contributes to one pixel of the
     destination image with identical weights.
@@ -158,6 +160,7 @@ pixel, the Python Imaging Library provides different resampling *filters*.
     .. versionadded:: 3.4.0
 
 .. data:: Resampling.BILINEAR
+    :noindex:
 
     For resize calculate the output pixel value using linear interpolation
     on all pixels that may contribute to the output value.
@@ -165,6 +168,7 @@ pixel, the Python Imaging Library provides different resampling *filters*.
     in the input image is used.
 
 .. data:: Resampling.HAMMING
+    :noindex:
 
     Produces a sharper image than :data:`Resampling.BILINEAR`, doesn't have
     dislocations on local level like with :data:`Resampling.BOX`.
@@ -174,6 +178,7 @@ pixel, the Python Imaging Library provides different resampling *filters*.
     .. versionadded:: 3.4.0
 
 .. data:: Resampling.BICUBIC
+    :noindex:
 
     For resize calculate the output pixel value using cubic interpolation
     on all pixels that may contribute to the output value.
@@ -181,6 +186,7 @@ pixel, the Python Imaging Library provides different resampling *filters*.
     in the input image is used.
 
 .. data:: Resampling.LANCZOS
+    :noindex:
 
     Calculate the output pixel value using a high-quality Lanczos filter (a
     truncated sinc) on all pixels that may contribute to the output value.

docs/handbook/text-anchors.rst

@@ -132,7 +132,7 @@ of the two lines.
 
 .. comment: Image generated with ../example/anchors.py
 
-.. image:: ../example/anchors.png
+.. image:: ../example/anchors.webp
     :alt: Text anchor examples
     :align: center
 

docs/handbook/tutorial.rst

@@ -278,26 +278,26 @@ choose to resize relative to a given size.
 
     from PIL import Image, ImageOps
     size = (100, 150)
-    with Image.open("Tests/images/hopper.png") as im:
+    with Image.open("Tests/images/hopper.webp") as im:
-        ImageOps.contain(im, size).save("imageops_contain.png")
+        ImageOps.contain(im, size).save("imageops_contain.webp")
-        ImageOps.cover(im, size).save("imageops_cover.png")
+        ImageOps.cover(im, size).save("imageops_cover.webp")
-        ImageOps.fit(im, size).save("imageops_fit.png")
+        ImageOps.fit(im, size).save("imageops_fit.webp")
-        ImageOps.pad(im, size, color="#f00").save("imageops_pad.png")
+        ImageOps.pad(im, size, color="#f00").save("imageops_pad.webp")
 
         # thumbnail() can also be used,
         # but will modify the image object in place
         im.thumbnail(size)
-        im.save("imageops_thumbnail.png")
+        im.save("image_thumbnail.webp")
 
-+----------------+-------------------------------------------+--------------------------------------------+------------------------------------------+----------------------------------------+----------------------------------------+
++----------------+--------------------------------------------+---------------------------------------------+-------------------------------------------+-----------------------------------------+-----------------------------------------+
 |                | :py:meth:`~PIL.Image.Image.thumbnail`      | :py:meth:`~PIL.ImageOps.contain`            | :py:meth:`~PIL.ImageOps.cover`            | :py:meth:`~PIL.ImageOps.fit`            | :py:meth:`~PIL.ImageOps.pad`            |
-+================+===========================================+============================================+==========================================+========================================+========================================+
++================+============================================+=============================================+===========================================+=========================================+=========================================+
 |Given size      | ``(100, 150)``                             | ``(100, 150)``                              | ``(100, 150)``                            | ``(100, 150)``                          | ``(100, 150)``                          |
-+----------------+-------------------------------------------+--------------------------------------------+------------------------------------------+----------------------------------------+----------------------------------------+
++----------------+--------------------------------------------+---------------------------------------------+-------------------------------------------+-----------------------------------------+-----------------------------------------+
-|Resulting image | .. image:: ../example/image_thumbnail.png | .. image:: ../example/imageops_contain.png | .. image:: ../example/imageops_cover.png | .. image:: ../example/imageops_fit.png | .. image:: ../example/imageops_pad.png |
+|Resulting image | .. image:: ../example/image_thumbnail.webp | .. image:: ../example/imageops_contain.webp | .. image:: ../example/imageops_cover.webp | .. image:: ../example/imageops_fit.webp | .. image:: ../example/imageops_pad.webp |
-+----------------+-------------------------------------------+--------------------------------------------+------------------------------------------+----------------------------------------+----------------------------------------+
++----------------+--------------------------------------------+---------------------------------------------+-------------------------------------------+-----------------------------------------+-----------------------------------------+
 |Resulting size  | ``100×100``                                | ``100×100``                                 | ``150×150``                               | ``100×150``                             | ``100×150``                             |
-+----------------+-------------------------------------------+--------------------------------------------+------------------------------------------+----------------------------------------+----------------------------------------+
++----------------+--------------------------------------------+---------------------------------------------+-------------------------------------------+-----------------------------------------+-----------------------------------------+
 
 .. _color-transforms:
 

docs/installation/building-from-source.rst

@@ -68,7 +68,7 @@ Many of Pillow's features require external libraries:
 
 * **libimagequant** provides improved color quantization
 
-  * Pillow has been tested with libimagequant **2.6-4.3**
+  * Pillow has been tested with libimagequant **2.6-4.3.1**
   * Libimagequant is licensed GPLv3, which is more restrictive than
     the Pillow license, therefore we will not be distributing binaries
     with libimagequant support enabled.

docs/reference/Image.rst

@@ -78,8 +78,6 @@ Constructing images
 ^^^^^^^^^^^^^^^^^^^
 
 .. autofunction:: new
-.. autoclass:: SupportsArrayInterface
-    :show-inheritance:
 .. autofunction:: fromarray
 .. autofunction:: frombytes
 .. autofunction:: frombuffer
@@ -197,6 +195,7 @@ This helps to get the bounding box coordinates of the input image::
 .. automethod:: PIL.Image.Image.getpalette
 .. automethod:: PIL.Image.Image.getpixel
 .. automethod:: PIL.Image.Image.getprojection
+.. automethod:: PIL.Image.Image.getxmp
 .. automethod:: PIL.Image.Image.histogram
 .. automethod:: PIL.Image.Image.paste
 .. automethod:: PIL.Image.Image.point
@@ -365,6 +364,14 @@ Classes
 .. autoclass:: PIL.Image.ImagePointHandler
 .. autoclass:: PIL.Image.ImageTransformHandler
 
+Protocols
+---------
+
+.. autoclass:: SupportsArrayInterface
+    :show-inheritance:
+.. autoclass:: SupportsGetData
+    :show-inheritance:
+
 Constants
 ---------
 
@@ -418,7 +425,6 @@ See :ref:`concept-filters` for details.
 .. autoclass:: Resampling
     :members:
     :undoc-members:
-    :noindex:
 
 Dither modes
 ^^^^^^^^^^^^

docs/reference/ImageDraw.rst

@@ -691,23 +691,7 @@ Methods
     :param hints: An optional list of hints.
     :returns: A (drawing context, drawing resource factory) tuple.
 
-.. py:method:: floodfill(image, xy, value, border=None, thresh=0)
+.. autofunction:: PIL.ImageDraw.floodfill
-
-    .. warning:: This method is experimental.
-
-    Fills a bounded region with a given color.
-
-    :param image: Target image.
-    :param xy: Seed position (a 2-item coordinate tuple).
-    :param value: Fill color.
-    :param border: Optional border value.  If given, the region consists of
-        pixels with a color different from the border color.  If not given,
-        the region consists of pixels having the same color as the seed
-        pixel.
-    :param thresh: Optional threshold value which specifies a maximum
-        tolerable difference of a pixel value from the 'background' in
-        order for it to be replaced. Useful for filling regions of non-
-        homogeneous, but similar, colors.
 
 .. _BCP 47 language code: https://www.w3.org/International/articles/language-tags/
 .. _OpenType docs: https://learn.microsoft.com/en-us/typography/opentype/spec/featurelist

docs/reference/ImageFile.rst

@@ -57,6 +57,10 @@ Classes
     :undoc-members:
     :show-inheritance:
 
+.. autoclass:: PIL.ImageFile.StubHandler()
+    :members:
+    :show-inheritance:
+
 .. autoclass:: PIL.ImageFile.StubImageFile()
     :members:
     :show-inheritance:

docs/reference/ImageOps.rst

@@ -36,26 +36,26 @@ Resize relative to a given size
 
     from PIL import Image, ImageOps
     size = (100, 150)
-    with Image.open("Tests/images/hopper.png") as im:
+    with Image.open("Tests/images/hopper.webp") as im:
-        ImageOps.contain(im, size).save("imageops_contain.png")
+        ImageOps.contain(im, size).save("imageops_contain.webp")
-        ImageOps.cover(im, size).save("imageops_cover.png")
+        ImageOps.cover(im, size).save("imageops_cover.webp")
-        ImageOps.fit(im, size).save("imageops_fit.png")
+        ImageOps.fit(im, size).save("imageops_fit.webp")
-        ImageOps.pad(im, size, color="#f00").save("imageops_pad.png")
+        ImageOps.pad(im, size, color="#f00").save("imageops_pad.webp")
 
         # thumbnail() can also be used,
         # but will modify the image object in place
         im.thumbnail(size)
-        im.save("imageops_thumbnail.png")
+        im.save("image_thumbnail.webp")
 
-+----------------+-------------------------------------------+--------------------------------------------+------------------------------------------+----------------------------------------+----------------------------------------+
++----------------+--------------------------------------------+---------------------------------------------+-------------------------------------------+-----------------------------------------+-----------------------------------------+
 |                | :py:meth:`~PIL.Image.Image.thumbnail`      | :py:meth:`~PIL.ImageOps.contain`            | :py:meth:`~PIL.ImageOps.cover`            | :py:meth:`~PIL.ImageOps.fit`            | :py:meth:`~PIL.ImageOps.pad`            |
-+================+===========================================+============================================+==========================================+========================================+========================================+
++================+============================================+=============================================+===========================================+=========================================+=========================================+
 |Given size      | ``(100, 150)``                             | ``(100, 150)``                              | ``(100, 150)``                            | ``(100, 150)``                          | ``(100, 150)``                          |
-+----------------+-------------------------------------------+--------------------------------------------+------------------------------------------+----------------------------------------+----------------------------------------+
++----------------+--------------------------------------------+---------------------------------------------+-------------------------------------------+-----------------------------------------+-----------------------------------------+
-|Resulting image | .. image:: ../example/image_thumbnail.png | .. image:: ../example/imageops_contain.png | .. image:: ../example/imageops_cover.png | .. image:: ../example/imageops_fit.png | .. image:: ../example/imageops_pad.png |
+|Resulting image | .. image:: ../example/image_thumbnail.webp | .. image:: ../example/imageops_contain.webp | .. image:: ../example/imageops_cover.webp | .. image:: ../example/imageops_fit.webp | .. image:: ../example/imageops_pad.webp |
-+----------------+-------------------------------------------+--------------------------------------------+------------------------------------------+----------------------------------------+----------------------------------------+
++----------------+--------------------------------------------+---------------------------------------------+-------------------------------------------+-----------------------------------------+-----------------------------------------+
 |Resulting size  | ``100×100``                                | ``100×100``                                 | ``150×150``                               | ``100×150``                             | ``100×150``                             |
-+----------------+-------------------------------------------+--------------------------------------------+------------------------------------------+----------------------------------------+----------------------------------------+
++----------------+--------------------------------------------+---------------------------------------------+-------------------------------------------+-----------------------------------------+-----------------------------------------+
 
 .. autofunction:: contain
 .. autofunction:: cover

docs/reference/PixelAccess.rst

@@ -44,42 +44,23 @@ Access using negative indexes is also possible. ::
 -----------------------------
 
 .. class:: PixelAccess
+  :canonical: PIL.Image.core.PixelAccess
 
-  .. method:: __setitem__(self, xy, color):
+  .. method:: __getitem__(self, xy: tuple[int, int]) -> float | tuple[int, ...]
-
-        Modifies the pixel at x,y. The color is given as a single
-        numerical value for single band images, and a tuple for
-        multi-band images
-
-        :param xy: The pixel coordinate, given as (x, y).
-        :param color: The pixel value according to its mode. e.g. tuple (r, g, b) for RGB mode)
-
-  .. method:: __getitem__(self, xy):
 
         Returns the pixel at x,y. The pixel is returned as a single
-        value for single band images or a tuple for multiple band
+        value for single band images or a tuple for multi-band images.
-        images
 
         :param xy: The pixel coordinate, given as (x, y).
         :returns: a pixel value for single band images, a tuple of
                   pixel values for multiband images.
 
-  .. method:: putpixel(self, xy, color):
+  .. method:: __setitem__(self, xy: tuple[int, int], color: float | tuple[int, ...]) -> None
 
         Modifies the pixel at x,y. The color is given as a single
         numerical value for single band images, and a tuple for
-        multi-band images. In addition to this, RGB and RGBA tuples
+        multi-band images.
-        are accepted for P and PA images.
 
         :param xy: The pixel coordinate, given as (x, y).
-        :param color: The pixel value according to its mode. e.g. tuple (r, g, b) for RGB mode)
+        :param color: The pixel value according to its mode,
-
+                      e.g. tuple (r, g, b) for RGB mode.
-  .. method:: getpixel(self, xy):
-
-       Returns the pixel at x,y. The pixel is returned as a single
-        value for single band images or a tuple for multiple band
-        images
-
-        :param xy: The pixel coordinate, given as (x, y).
-        :returns: a pixel value for single band images, a tuple of
-          pixel values for multiband images.

docs/reference/PyAccess.rst

@@ -44,3 +44,4 @@ Access using negative indexes is also possible. ::
 
 .. autoclass:: PIL.PyAccess.PyAccess()
     :members:
+    :special-members: __getitem__, __setitem__

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:: NumpyArray
+
+    Typing alias.
+
 .. py:class:: StrOrBytesPath
 
     Typing alias.

docs/releasenotes/10.4.0.rst

@@ -34,6 +34,11 @@ Support for LibTIFF earlier than 4
 Support for LibTIFF earlier than version 4 has been deprecated.
 Upgrade to a newer version of LibTIFF instead.
 
+ImageDraw.getdraw hints parameter
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+The ``hints`` parameter in :py:meth:`~PIL.ImageDraw.getdraw()` has been deprecated.
+
 API Changes
 ===========
 

docs/releasenotes/8.3.0.rst

@@ -18,9 +18,9 @@ is not secure.
 
 - :py:meth:`~PIL.Image.Image.getexif` has used ``xml`` to potentially retrieve
   orientation data since Pillow 7.2.0. It has been refactored to use ``re`` instead.
-- :py:meth:`~PIL.JpegImagePlugin.JpegImageFile.getxmp` was added in Pillow 8.2.0. It
+- ``getxmp()`` was added to :py:class:`~PIL.JpegImagePlugin.JpegImageFile` in Pillow
-  will now use ``defusedxml`` instead. If the dependency is not present, an empty
+  8.2.0. It will now use ``defusedxml`` instead. If the dependency is not present, an
-  dictionary will be returned and a warning raised.
+  empty dictionary will be returned and a warning raised.
 
 Deprecations
 ============

docs/releasenotes/9.2.0.rst

@@ -98,7 +98,7 @@ Previously, the ``size`` methods returned a ``height`` that included the vertica
 offset of the text, while the new ``bbox`` methods distinguish this as a ``top``
 offset.
 
-.. image:: ../example/size_vs_bbox.png
+.. image:: ../example/size_vs_bbox.webp
     :alt: In bbox methods, top measures the vertical distance above the text, while bottom measures that plus the vertical distance of the text itself. In size methods, height also measures the vertical distance above the text plus the vertical distance of the text itself.
     :align: center
 

setup.py

@@ -37,7 +37,9 @@ IMAGEQUANT_ROOT = None
 JPEG2K_ROOT = None
 JPEG_ROOT = None
 LCMS_ROOT = None
+RAQM_ROOT = None
 TIFF_ROOT = None
+WEBP_ROOT = None
 ZLIB_ROOT = None
 FUZZING_BUILD = "LIB_FUZZING_ENGINE" in os.environ
 
@@ -459,6 +461,8 @@ class pil_build_ext(build_ext):
             "FREETYPE_ROOT": "freetype2",
             "HARFBUZZ_ROOT": "harfbuzz",
             "FRIBIDI_ROOT": "fribidi",
+            "RAQM_ROOT": "raqm",
+            "WEBP_ROOT": "libwebp",
             "LCMS_ROOT": "lcms2",
             "IMAGEQUANT_ROOT": "libimagequant",
         }.items():

src/PIL/BdfFontFile.py

@@ -103,7 +103,7 @@ def bdf_char(
 class BdfFontFile(FontFile.FontFile):
     """Font file plugin for the X11 BDF format."""
 
-    def __init__(self, fp: BinaryIO):
+    def __init__(self, fp: BinaryIO) -> None:
         super().__init__()
 
         s = fp.readline()

src/PIL/BlpImagePlugin.py

@@ -31,10 +31,12 @@ BLP files come in many different flavours:
 
 from __future__ import annotations
 
+import abc
 import os
 import struct
 from enum import IntEnum
 from io import BytesIO
+from typing import IO
 
 from . import Image, ImageFile
 
@@ -55,11 +57,13 @@ class AlphaEncoding(IntEnum):
     DXT5 = 7
 
 
-def unpack_565(i):
+def unpack_565(i: int) -> tuple[int, int, int]:
     return ((i >> 11) & 0x1F) << 3, ((i >> 5) & 0x3F) << 2, (i & 0x1F) << 3
 
 
-def decode_dxt1(data, alpha=False):
+def decode_dxt1(
+    data: bytes, alpha: bool = False
+) -> tuple[bytearray, bytearray, bytearray, bytearray]:
     """
     input: one "row" of data (i.e. will produce 4*width pixels)
     """
@@ -67,9 +71,9 @@ def decode_dxt1(data, alpha=False):
     blocks = len(data) // 8  # number of blocks in row
     ret = (bytearray(), bytearray(), bytearray(), bytearray())
 
-    for block in range(blocks):
+    for block_index in range(blocks):
         # Decode next 8-byte block.
-        idx = block * 8
+        idx = block_index * 8
         color0, color1, bits = struct.unpack_from("<HHI", data, idx)
 
         r0, g0, b0 = unpack_565(color0)
@@ -114,7 +118,7 @@ def decode_dxt1(data, alpha=False):
     return ret
 
 
-def decode_dxt3(data):
+def decode_dxt3(data: bytes) -> tuple[bytearray, bytearray, bytearray, bytearray]:
     """
     input: one "row" of data (i.e. will produce 4*width pixels)
     """
@@ -122,8 +126,8 @@ def decode_dxt3(data):
     blocks = len(data) // 16  # number of blocks in row
     ret = (bytearray(), bytearray(), bytearray(), bytearray())
 
-    for block in range(blocks):
+    for block_index in range(blocks):
-        idx = block * 16
+        idx = block_index * 16
         block = data[idx : idx + 16]
         # Decode next 16-byte block.
         bits = struct.unpack_from("<8B", block)
@@ -167,7 +171,7 @@ def decode_dxt3(data):
     return ret
 
 
-def decode_dxt5(data):
+def decode_dxt5(data: bytes) -> tuple[bytearray, bytearray, bytearray, bytearray]:
     """
     input: one "row" of data (i.e. will produce 4 * width pixels)
     """
@@ -175,8 +179,8 @@ def decode_dxt5(data):
     blocks = len(data) // 16  # number of blocks in row
     ret = (bytearray(), bytearray(), bytearray(), bytearray())
 
-    for block in range(blocks):
+    for block_index in range(blocks):
-        idx = block * 16
+        idx = block_index * 16
         block = data[idx : idx + 16]
         # Decode next 16-byte block.
         a0, a1 = struct.unpack_from("<BB", block)
@@ -275,7 +279,7 @@ class BlpImageFile(ImageFile.ImageFile):
 class _BLPBaseDecoder(ImageFile.PyDecoder):
     _pulls_fd = True
 
-    def decode(self, buffer):
+    def decode(self, buffer: bytes) -> tuple[int, int]:
         try:
             self._read_blp_header()
             self._load()
@@ -284,7 +288,12 @@ class _BLPBaseDecoder(ImageFile.PyDecoder):
             raise OSError(msg) from e
         return -1, 0
 
-    def _read_blp_header(self):
+    @abc.abstractmethod
+    def _load(self) -> None:
+        pass
+
+    def _read_blp_header(self) -> None:
+        assert self.fd is not None
         self.fd.seek(4)
         (self._blp_compression,) = struct.unpack("<i", self._safe_read(4))
 
@@ -303,10 +312,10 @@ class _BLPBaseDecoder(ImageFile.PyDecoder):
         self._blp_offsets = struct.unpack("<16I", self._safe_read(16 * 4))
         self._blp_lengths = struct.unpack("<16I", self._safe_read(16 * 4))
 
-    def _safe_read(self, length):
+    def _safe_read(self, length: int) -> bytes:
         return ImageFile._safe_read(self.fd, length)
 
-    def _read_palette(self):
+    def _read_palette(self) -> list[tuple[int, int, int, int]]:
         ret = []
         for i in range(256):
             try:
@@ -316,7 +325,7 @@ class _BLPBaseDecoder(ImageFile.PyDecoder):
             ret.append((b, g, r, a))
         return ret
 
-    def _read_bgra(self, palette):
+    def _read_bgra(self, palette: list[tuple[int, int, int, int]]) -> bytearray:
         data = bytearray()
         _data = BytesIO(self._safe_read(self._blp_lengths[0]))
         while True:
@@ -325,7 +334,7 @@ class _BLPBaseDecoder(ImageFile.PyDecoder):
             except struct.error:
                 break
             b, g, r, a = palette[offset]
-            d = (r, g, b)
+            d: tuple[int, ...] = (r, g, b)
             if self._blp_alpha_depth:
                 d += (a,)
             data.extend(d)
@@ -349,29 +358,30 @@ class BLP1Decoder(_BLPBaseDecoder):
             msg = f"Unsupported BLP compression {repr(self._blp_encoding)}"
             raise BLPFormatError(msg)
 
-    def _decode_jpeg_stream(self):
+    def _decode_jpeg_stream(self) -> None:
         from .JpegImagePlugin import JpegImageFile
 
         (jpeg_header_size,) = struct.unpack("<I", self._safe_read(4))
         jpeg_header = self._safe_read(jpeg_header_size)
+        assert self.fd is not None
         self._safe_read(self._blp_offsets[0] - self.fd.tell())  # What IS this?
         data = self._safe_read(self._blp_lengths[0])
         data = jpeg_header + data
-        data = BytesIO(data)
+        image = JpegImageFile(BytesIO(data))
-        image = JpegImageFile(data)
         Image._decompression_bomb_check(image.size)
         if image.mode == "CMYK":
             decoder_name, extents, offset, args = image.tile[0]
             image.tile = [(decoder_name, extents, offset, (args[0], "CMYK"))]
         r, g, b = image.convert("RGB").split()
-        image = Image.merge("RGB", (b, g, r))
+        reversed_image = Image.merge("RGB", (b, g, r))
-        self.set_as_raw(image.tobytes())
+        self.set_as_raw(reversed_image.tobytes())
 
 
 class BLP2Decoder(_BLPBaseDecoder):
-    def _load(self):
+    def _load(self) -> None:
         palette = self._read_palette()
 
+        assert self.fd is not None
         self.fd.seek(self._blp_offsets[0])
 
         if self._blp_compression == 1:
@@ -420,6 +430,7 @@ class BLPEncoder(ImageFile.PyEncoder):
 
     def _write_palette(self) -> bytes:
         data = b""
+        assert self.im is not None
         palette = self.im.getpalette("RGBA", "RGBA")
         for i in range(len(palette) // 4):
             r, g, b, a = palette[i * 4 : (i + 1) * 4]
@@ -428,12 +439,13 @@ class BLPEncoder(ImageFile.PyEncoder):
             data += b"\x00" * 4
         return data
 
-    def encode(self, bufsize):
+    def encode(self, bufsize: int) -> tuple[int, int, bytes]:
         palette_data = self._write_palette()
 
         offset = 20 + 16 * 4 * 2 + len(palette_data)
         data = struct.pack("<16I", offset, *((0,) * 15))
 
+        assert self.im is not None
         w, h = self.im.size
         data += struct.pack("<16I", w * h, *((0,) * 15))
 
@@ -446,7 +458,7 @@ class BLPEncoder(ImageFile.PyEncoder):
         return len(data), 0, data
 
 
-def _save(im, fp, filename):
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     if im.mode != "P":
         msg = "Unsupported BLP image mode"
         raise ValueError(msg)

src/PIL/BmpImagePlugin.py

@@ -25,6 +25,7 @@
 from __future__ import annotations
 
 import os
+from typing import IO
 
 from . import Image, ImageFile, ImagePalette
 from ._binary import i16le as i16
@@ -52,7 +53,7 @@ def _accept(prefix: bytes) -> bool:
     return prefix[:2] == b"BM"
 
 
-def _dib_accept(prefix):
+def _dib_accept(prefix: bytes) -> bool:
     return i32(prefix) in [12, 40, 52, 56, 64, 108, 124]
 
 
@@ -300,7 +301,8 @@ class BmpImageFile(ImageFile.ImageFile):
 class BmpRleDecoder(ImageFile.PyDecoder):
     _pulls_fd = True
 
-    def decode(self, buffer):
+    def decode(self, buffer: bytes) -> tuple[int, int]:
+        assert self.fd is not None
         rle4 = self.args[1]
         data = bytearray()
         x = 0
@@ -394,11 +396,13 @@ SAVE = {
 }
 
 
-def _dib_save(im, fp, filename):
+def _dib_save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     _save(im, fp, filename, False)
 
 
-def _save(im, fp, filename, bitmap_header=True):
+def _save(
+    im: Image.Image, fp: IO[bytes], filename: str | bytes, bitmap_header: bool = True
+) -> None:
     try:
         rawmode, bits, colors = SAVE[im.mode]
     except KeyError as e:

src/PIL/BufrStubImagePlugin.py

@@ -10,12 +10,14 @@
 #
 from __future__ import annotations
 
+from typing import IO
+
 from . import Image, ImageFile
 
 _handler = None
 
 
-def register_handler(handler):
+def register_handler(handler: ImageFile.StubHandler | None) -> None:
     """
     Install application-specific BUFR image handler.
 
@@ -54,11 +56,11 @@ class BufrStubImageFile(ImageFile.StubImageFile):
         if loader:
             loader.open(self)
 
-    def _load(self):
+    def _load(self) -> ImageFile.StubHandler | None:
         return _handler
 
 
-def _save(im, fp, filename):
+def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     if _handler is None or not hasattr(_handler, "save"):
         msg = "BUFR save handler not installed"
         raise OSError(msg)