Merge branch 'main' into type_hints

Tests/test_file_gif.py

@@ -1252,10 +1252,11 @@ def test_palette_save_L(tmp_path: Path) -> None:
 
     im = hopper("P")
     im_l = Image.frombytes("L", im.size, im.tobytes())
-    palette = bytes(im.getpalette())
+    palette = im.getpalette()
+    assert palette is not None
 
     out = str(tmp_path / "temp.gif")
-    im_l.save(out, palette=palette)
+    im_l.save(out, palette=bytes(palette))
 
     with Image.open(out) as reloaded:
         assert_image_equal(reloaded.convert("RGB"), im.convert("RGB"))

Tests/test_file_jpeg.py

@@ -154,7 +154,7 @@ class TestFileJpeg:
             assert k > 0.9
 
     def test_rgb(self) -> None:
-        def getchannels(im: Image.Image) -> tuple[int, int, int]:
+        def getchannels(im: JpegImagePlugin.JpegImageFile) -> tuple[int, int, int]:
             return tuple(v[0] for v in im.layer)
 
         im = hopper()
@@ -443,7 +443,7 @@ class TestFileJpeg:
         assert_image(im1, im2.mode, im2.size)
 
     def test_subsampling(self) -> None:
-        def getsampling(im: Image.Image):
+        def getsampling(im: JpegImagePlugin.JpegImageFile):
             layer = im.layer
             return layer[0][1:3] + layer[1][1:3] + layer[2][1:3]
 

Tests/test_file_libtiff.py

@@ -668,7 +668,8 @@ class TestFileLibTiff(LibTiffTestCase):
             pilim.save(buffer_io, format="tiff", compression=compression)
             buffer_io.seek(0)
 
-            assert_image_similar_tofile(pilim, buffer_io, 0)
+            with Image.open(buffer_io) as saved_im:
+                assert_image_similar(pilim, saved_im, 0)
 
         save_bytesio()
         save_bytesio("raw")

Tests/test_font_leaks.py

@@ -12,7 +12,7 @@ class TestTTypeFontLeak(PillowLeakTestCase):
     iterations = 10
     mem_limit = 4096  # k
 
-    def _test_font(self, font: ImageFont.FreeTypeFont) -> None:
+    def _test_font(self, font: ImageFont.FreeTypeFont | ImageFont.ImageFont) -> None:
         im = Image.new("RGB", (255, 255), "white")
         draw = ImageDraw.ImageDraw(im)
         self._test_leak(

Tests/test_image.py

@@ -25,6 +25,7 @@ from PIL import (
 from .helper import (
     assert_image_equal,
     assert_image_equal_tofile,
+    assert_image_similar,
     assert_image_similar_tofile,
     assert_not_all_same,
     hopper,
@@ -99,10 +100,18 @@ class TestImage:
         JPGFILE = "Tests/images/hopper.jpg"
 
         with pytest.raises(TypeError):
-            with Image.open(PNGFILE, formats=123):
+            with Image.open(PNGFILE, formats=123):  # type: ignore[arg-type]
                 pass
 
-        for formats in [["JPEG"], ("JPEG",), ["jpeg"], ["Jpeg"], ["jPeG"], ["JpEg"]]:
+        format_list: list[list[str] | tuple[str, ...]] = [
+            ["JPEG"],
+            ("JPEG",),
+            ["jpeg"],
+            ["Jpeg"],
+            ["jPeG"],
+            ["JpEg"],
+        ]
+        for formats in format_list:
             with pytest.raises(UnidentifiedImageError):
                 with Image.open(PNGFILE, formats=formats):
                     pass
@@ -138,7 +147,7 @@ class TestImage:
 
     def test_bad_mode(self) -> None:
         with pytest.raises(ValueError):
-            with Image.open("filename", "bad mode"):
+            with Image.open("filename", "bad mode"):  # type: ignore[arg-type]
                 pass
 
     def test_stringio(self) -> None:
@@ -185,7 +194,8 @@ class TestImage:
         with tempfile.TemporaryFile() as fp:
             im.save(fp, "JPEG")
             fp.seek(0)
-            assert_image_similar_tofile(im, fp, 20)
+            with Image.open(fp) as reloaded:
+                assert_image_similar(im, reloaded, 20)
 
     def test_unknown_extension(self, tmp_path: Path) -> None:
         im = hopper()
@@ -497,9 +507,11 @@ class TestImage:
     def test_check_size(self) -> None:
         # Checking that the _check_size function throws value errors when we want it to
         with pytest.raises(ValueError):
-            Image.new("RGB", 0)  # not a tuple
+            # not a tuple
+            Image.new("RGB", 0)  # type: ignore[arg-type]
         with pytest.raises(ValueError):
-            Image.new("RGB", (0,))  # Tuple too short
+            # tuple too short
+            Image.new("RGB", (0,))  # type: ignore[arg-type]
         with pytest.raises(ValueError):
             Image.new("RGB", (-1, -1))  # w,h < 0
 

Tests/test_image_array.py

@@ -86,8 +86,8 @@ def test_fromarray() -> None:
     assert test("RGBX") == ("RGBA", (128, 100), True)
 
     # Test mode is None with no "typestr" in the array interface
+    wrapped = Wrapper(hopper("L"), {"shape": (100, 128)})
     with pytest.raises(TypeError):
-        wrapped = Wrapper(test("L"), {"shape": (100, 128)})
         Image.fromarray(wrapped)
 
 

Tests/test_image_crop.py

@@ -18,7 +18,7 @@ def test_crop(mode: str) -> None:
 
 
 def test_wide_crop() -> None:
-    def crop(*bbox: int) -> tuple[int, ...]:
+    def crop(bbox: tuple[int, int, int, int]) -> tuple[int, ...]:
         i = im.crop(bbox)
         h = i.histogram()
         while h and not h[-1]:
@@ -27,23 +27,23 @@ def test_wide_crop() -> None:
 
     im = Image.new("L", (100, 100), 1)
 
-    assert crop(0, 0, 100, 100) == (0, 10000)
+    assert crop((0, 0, 100, 100)) == (0, 10000)
-    assert crop(25, 25, 75, 75) == (0, 2500)
+    assert crop((25, 25, 75, 75)) == (0, 2500)
 
     # sides
-    assert crop(-25, 0, 25, 50) == (1250, 1250)
+    assert crop((-25, 0, 25, 50)) == (1250, 1250)
-    assert crop(0, -25, 50, 25) == (1250, 1250)
+    assert crop((0, -25, 50, 25)) == (1250, 1250)
-    assert crop(75, 0, 125, 50) == (1250, 1250)
+    assert crop((75, 0, 125, 50)) == (1250, 1250)
-    assert crop(0, 75, 50, 125) == (1250, 1250)
+    assert crop((0, 75, 50, 125)) == (1250, 1250)
 
-    assert crop(-25, 25, 125, 75) == (2500, 5000)
+    assert crop((-25, 25, 125, 75)) == (2500, 5000)
-    assert crop(25, -25, 75, 125) == (2500, 5000)
+    assert crop((25, -25, 75, 125)) == (2500, 5000)
 
     # corners
-    assert crop(-25, -25, 25, 25) == (1875, 625)
+    assert crop((-25, -25, 25, 25)) == (1875, 625)
-    assert crop(75, -25, 125, 25) == (1875, 625)
+    assert crop((75, -25, 125, 25)) == (1875, 625)
-    assert crop(75, 75, 125, 125) == (1875, 625)
+    assert crop((75, 75, 125, 125)) == (1875, 625)
-    assert crop(-25, 75, 25, 125) == (1875, 625)
+    assert crop((-25, 75, 25, 125)) == (1875, 625)
 
 
 @pytest.mark.parametrize("box", ((8, 2, 2, 8), (2, 8, 8, 2), (8, 8, 2, 2)))

Tests/test_image_filter.py

@@ -46,9 +46,9 @@ def test_sanity(filter_to_apply: ImageFilter.Filter, mode: str) -> None:
 
 @pytest.mark.parametrize("mode", ("L", "I", "RGB", "CMYK"))
 def test_sanity_error(mode: str) -> None:
+    im = hopper(mode)
     with pytest.raises(TypeError):
-        im = hopper(mode)
+        im.filter("hello")  # type: ignore[arg-type]
-        im.filter("hello")
 
 
 # crashes on small images

Tests/test_image_getextrema.py

@@ -6,7 +6,7 @@ from .helper import hopper
 
 
 def test_extrema() -> None:
-    def extrema(mode: str) -> tuple[int, int] | tuple[tuple[int, int], ...]:
+    def extrema(mode: str) -> tuple[float, float] | tuple[tuple[int, int], ...]:
         return hopper(mode).getextrema()
 
     assert extrema("1") == (0, 255)

Tests/test_imagecms.py

@@ -7,7 +7,7 @@ import shutil
 import sys
 from io import BytesIO
 from pathlib import Path
-from typing import Any
+from typing import Any, Literal, cast
 
 import pytest
 
@@ -209,13 +209,13 @@ def test_exceptions() -> None:
         ImageCms.buildTransform("foo", "bar", "RGB", "RGB")
 
     with pytest.raises(ImageCms.PyCMSError, match="Invalid type for Profile"):
-        ImageCms.getProfileName(None)
+        ImageCms.getProfileName(None)  # type: ignore[arg-type]
     skip_missing()
 
     # Python <= 3.9: "an integer is required (got type NoneType)"
     # Python > 3.9: "'NoneType' object cannot be interpreted as an integer"
     with pytest.raises(ImageCms.PyCMSError, match="integer"):
-        ImageCms.isIntentSupported(SRGB, None, None)
+        ImageCms.isIntentSupported(SRGB, None, None)  # type: ignore[arg-type]
 
 
 def test_display_profile() -> None:
@@ -239,7 +239,7 @@ def test_unsupported_color_space() -> None:
             "Color space not supported for on-the-fly profile creation (unsupported)"
         ),
     ):
-        ImageCms.createProfile("unsupported")
+        ImageCms.createProfile("unsupported")  # type: ignore[arg-type]
 
 
 def test_invalid_color_temperature() -> None:
@@ -247,7 +247,7 @@ def test_invalid_color_temperature() -> None:
         ImageCms.PyCMSError,
         match='Color temperature must be numeric, "invalid" not valid',
     ):
-        ImageCms.createProfile("LAB", "invalid")
+        ImageCms.createProfile("LAB", "invalid")  # type: ignore[arg-type]
 
 
 @pytest.mark.parametrize("flag", ("my string", -1))
@@ -256,7 +256,7 @@ def test_invalid_flag(flag: str | int) -> None:
         with pytest.raises(
             ImageCms.PyCMSError, match="flags must be an integer between 0 and "
         ):
-            ImageCms.profileToProfile(im, "foo", "bar", flags=flag)
+            ImageCms.profileToProfile(im, "foo", "bar", flags=flag)  # type: ignore[arg-type]
 
 
 def test_simple_lab() -> None:
@@ -352,7 +352,7 @@ def test_extended_information() -> None:
     p = o.profile
 
     def assert_truncated_tuple_equal(
-        tup1: tuple[Any, ...], tup2: tuple[Any, ...], digits: int = 10
+        tup1: tuple[Any, ...] | None, tup2: tuple[Any, ...], digits: int = 10
     ) -> None:
         # Helper function to reduce precision of tuples of floats
         # recursively and then check equality.
@@ -368,6 +368,7 @@ def test_extended_information() -> None:
                 for val in tuple_value
             )
 
+        assert tup1 is not None
         assert truncate_tuple(tup1) == truncate_tuple(tup2)
 
     assert p.attributes == 4294967296
@@ -513,22 +514,22 @@ def test_non_ascii_path(tmp_path: Path) -> None:
 def test_profile_typesafety() -> None:
     # does not segfault
     with pytest.raises(TypeError, match="Invalid type for Profile"):
-        ImageCms.ImageCmsProfile(0).tobytes()
+        ImageCms.ImageCmsProfile(0)  # type: ignore[arg-type]
     with pytest.raises(TypeError, match="Invalid type for Profile"):
-        ImageCms.ImageCmsProfile(1).tobytes()
+        ImageCms.ImageCmsProfile(1)  # type: ignore[arg-type]
 
     # also check core function
     with pytest.raises(TypeError):
-        ImageCms.core.profile_tobytes(0)
+        ImageCms.core.profile_tobytes(0)  # type: ignore[arg-type]
     with pytest.raises(TypeError):
-        ImageCms.core.profile_tobytes(1)
+        ImageCms.core.profile_tobytes(1)  # type: ignore[arg-type]
 
     if not is_pypy():
         # core profile should not be directly instantiable
         with pytest.raises(TypeError):
             ImageCms.core.CmsProfile()
         with pytest.raises(TypeError):
-            ImageCms.core.CmsProfile(0)
+            ImageCms.core.CmsProfile(0)  # type: ignore[call-arg]
 
 
 @pytest.mark.skipif(is_pypy(), reason="fails on PyPy")
@@ -537,7 +538,7 @@ def test_transform_typesafety() -> None:
     with pytest.raises(TypeError):
         ImageCms.core.CmsTransform()
     with pytest.raises(TypeError):
-        ImageCms.core.CmsTransform(0)
+        ImageCms.core.CmsTransform(0)  # type: ignore[call-arg]
 
 
 def assert_aux_channel_preserved(
@@ -587,11 +588,13 @@ def assert_aux_channel_preserved(
     )
 
     # apply transform
+    result_image: Image.Image | None
     if transform_in_place:
         ImageCms.applyTransform(source_image, t, inPlace=True)
         result_image = source_image
     else:
         result_image = ImageCms.applyTransform(source_image, t, inPlace=False)
+    assert result_image is not None
     result_image_aux = result_image.getchannel(preserved_channel)
 
     assert_image_equal(source_image_aux, result_image_aux)
@@ -637,7 +640,8 @@ def test_auxiliary_channels_isolated() -> None:
                     continue
 
                 # convert with and without AUX data, test colors are equal
-                source_profile = ImageCms.createProfile(src_format[1])
+                src_colorSpace = cast(Literal["LAB", "XYZ", "sRGB"], src_format[1])
+                source_profile = ImageCms.createProfile(src_colorSpace)
                 destination_profile = ImageCms.createProfile(dst_format[1])
                 source_image = src_format[3]
                 test_transform = ImageCms.buildTransform(
@@ -648,6 +652,7 @@ def test_auxiliary_channels_isolated() -> None:
                 )
 
                 # test conversion from aux-ful source
+                test_image: Image.Image | None
                 if transform_in_place:
                     test_image = source_image.copy()
                     ImageCms.applyTransform(test_image, test_transform, inPlace=True)
@@ -655,6 +660,7 @@ def test_auxiliary_channels_isolated() -> None:
                     test_image = ImageCms.applyTransform(
                         source_image, test_transform, inPlace=False
                     )
+                assert test_image is not None
 
                 # reference conversion from aux-less source
                 reference_transform = ImageCms.buildTransform(

Tests/test_imagedraw.py

@@ -1083,8 +1083,8 @@ def test_line_horizontal() -> None:
     )
 
 
+@pytest.mark.xfail(reason="failing test")
 def test_line_h_s1_w2() -> None:
-    pytest.skip("failing")
     img, draw = create_base_image_draw((20, 20))
     draw.line((5, 5, 14, 6), BLACK, 2)
     assert_image_equal_tofile(

Tests/test_imagestat.py

@@ -25,10 +25,10 @@ def test_sanity() -> None:
     st.stddev
 
     with pytest.raises(AttributeError):
-        st.spam()
+        st.spam()  # type: ignore[attr-defined]
 
     with pytest.raises(TypeError):
-        ImageStat.Stat(1)
+        ImageStat.Stat(1)  # type: ignore[arg-type]
 
 
 def test_hopper() -> None:

src/PIL/ImageCms.py

@@ -754,7 +754,7 @@ def applyTransform(
 
 
 def createProfile(
-    colorSpace: Literal["LAB", "XYZ", "sRGB"], colorTemp: SupportsFloat = -1
+    colorSpace: Literal["LAB", "XYZ", "sRGB"], colorTemp: SupportsFloat = 0
 ) -> core.CmsProfile:
     """
     (pyCMS) Creates a profile.
@@ -777,7 +777,7 @@ def createProfile(
     :param colorSpace: String, the color space of the profile you wish to
         create.
         Currently only "LAB", "XYZ", and "sRGB" are supported.
-    :param colorTemp: Positive integer for the white point for the profile, in
+    :param colorTemp: Positive number for the white point for the profile, in
         degrees Kelvin (i.e. 5000, 6500, 9600, etc.).  The default is for D50
         illuminant if omitted (5000k).  colorTemp is ONLY applied to LAB
         profiles, and is ignored for XYZ and sRGB.
@@ -1089,7 +1089,7 @@ def isIntentSupported(
         raise PyCMSError(v) from v
 
 
-def versions() -> tuple[str, str, str, str]:
+def versions() -> tuple[str, str | None, str, str]:
     """
     (pyCMS) Fetches versions.
     """

src/PIL/_imagingcms.pyi

@@ -2,7 +2,7 @@ import datetime
 import sys
 from typing import Literal, SupportsFloat, TypedDict
 
-littlecms_version: str
+littlecms_version: str | None
 
 _Tuple3f = tuple[float, float, float]
 _Tuple2x3f = tuple[_Tuple3f, _Tuple3f]