Merge branch 'main' into zlib-ng

.github/workflows/wheels-dependencies.sh

@@ -121,6 +121,7 @@ curl -fsSL -o pillow-depends-main.zip https://github.com/python-pillow/pillow-de
 untar pillow-depends-main.zip
 
 if [[ -n "$IS_MACOS" ]]; then
+  # libdeflate may cause a minimum target error when repairing the wheel
   # libtiff and libxcb cause a conflict with building libtiff and libxcb
   # libxau and libxdmcp cause an issue on macOS < 11
   # remove cairo to fix building harfbuzz on arm64
@@ -132,7 +133,7 @@ if [[ -n "$IS_MACOS" ]]; then
   if [[ "$CIBW_ARCHS" == "arm64" ]]; then
     brew remove --ignore-dependencies jpeg-turbo
   else
-    brew remove --ignore-dependencies webp
+    brew remove --ignore-dependencies libdeflate webp
   fi
 
   brew install pkg-config

CHANGES.rst

@@ -5,6 +5,9 @@ Changelog (Pillow)
 11.1.0 (unreleased)
 -------------------
 
+- Corrected EMF DPI #8485
+  [radarhere]
+
 - Fix IFDRational with a zero denominator #8474
   [radarhere]
 

Tests/test_bmp_reference.py

@@ -22,6 +22,8 @@ def test_bad() -> None:
     for f in get_files("b"):
         # Assert that there is no unclosed file warning
         with warnings.catch_warnings():
+            warnings.simplefilter("error")
+
             try:
                 with Image.open(f) as im:
                     im.load()

Tests/test_file_dcx.py

@@ -36,6 +36,8 @@ def test_unclosed_file() -> None:
 
 def test_closed_file() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         im = Image.open(TEST_FILE)
         im.load()
         im.close()
@@ -43,6 +45,8 @@ def test_closed_file() -> None:
 
 def test_context_manager() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         with Image.open(TEST_FILE) as im:
             im.load()
 

Tests/test_file_fli.py

@@ -65,6 +65,8 @@ def test_unclosed_file() -> None:
 
 def test_closed_file() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         im = Image.open(static_test_file)
         im.load()
         im.close()
@@ -81,6 +83,8 @@ def test_seek_after_close() -> None:
 
 def test_context_manager() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         with Image.open(static_test_file) as im:
             im.load()
 

Tests/test_file_gif.py

@@ -46,6 +46,8 @@ def test_unclosed_file() -> None:
 
 def test_closed_file() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         im = Image.open(TEST_GIF)
         im.load()
         im.close()
@@ -67,6 +69,8 @@ def test_seek_after_close() -> None:
 
 def test_context_manager() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         with Image.open(TEST_GIF) as im:
             im.load()
 

Tests/test_file_icns.py

@@ -21,6 +21,8 @@ def test_sanity() -> None:
     with Image.open(TEST_FILE) as im:
         # Assert that there is no unclosed file warning
         with warnings.catch_warnings():
+            warnings.simplefilter("error")
+
             im.load()
 
         assert im.mode == "RGBA"

Tests/test_file_im.py

@@ -41,6 +41,8 @@ def test_unclosed_file() -> None:
 
 def test_closed_file() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         im = Image.open(TEST_IM)
         im.load()
         im.close()
@@ -48,6 +50,8 @@ def test_closed_file() -> None:
 
 def test_context_manager() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         with Image.open(TEST_IM) as im:
             im.load()
 

Tests/test_file_jpeg.py

@@ -850,6 +850,8 @@ class TestFileJpeg:
 
             out = str(tmp_path / "out.jpg")
             with warnings.catch_warnings():
+                warnings.simplefilter("error")
+
                 im.save(out, exif=exif)
 
         with Image.open(out) as reloaded:

Tests/test_file_jpeg2k.py

@@ -2,6 +2,7 @@ from __future__ import annotations
 
 import os
 import re
+from collections.abc import Generator
 from io import BytesIO
 from pathlib import Path
 from typing import Any
@@ -29,8 +30,16 @@ EXTRA_DIR = "Tests/images/jpeg2000"
 
 pytestmark = skip_unless_feature("jpg_2000")
 
-test_card = Image.open("Tests/images/test-card.png")
-test_card.load()
+
+@pytest.fixture
+def card() -> Generator[ImageFile.ImageFile, None, None]:
+    with Image.open("Tests/images/test-card.png") as im:
+        im.load()
+    try:
+        yield im
+    finally:
+        im.close()
+
 
 # OpenJPEG 2.0.0 outputs this debugging message sometimes; we should
 # ignore it---it doesn't represent a test failure.
@@ -74,76 +83,76 @@ def test_invalid_file() -> None:
         Jpeg2KImagePlugin.Jpeg2KImageFile(invalid_file)
 
 
-def test_bytesio() -> None:
+def test_bytesio(card: ImageFile.ImageFile) -> None:
     with open("Tests/images/test-card-lossless.jp2", "rb") as f:
         data = BytesIO(f.read())
     with Image.open(data) as im:
         im.load()
-        assert_image_similar(im, test_card, 1.0e-3)
+        assert_image_similar(im, card, 1.0e-3)
 
 
 # These two test pre-written JPEG 2000 files that were not written with
 # PIL (they were made using Adobe Photoshop)
 
 
-def test_lossless(tmp_path: Path) -> None:
+def test_lossless(card: ImageFile.ImageFile, tmp_path: Path) -> None:
     with Image.open("Tests/images/test-card-lossless.jp2") as im:
         im.load()
         outfile = str(tmp_path / "temp_test-card.png")
         im.save(outfile)
-    assert_image_similar(im, test_card, 1.0e-3)
+    assert_image_similar(im, card, 1.0e-3)
 
 
-def test_lossy_tiled() -> None:
-    assert_image_similar_tofile(
-        test_card, "Tests/images/test-card-lossy-tiled.jp2", 2.0
-    )
+def test_lossy_tiled(card: ImageFile.ImageFile) -> None:
+    assert_image_similar_tofile(card, "Tests/images/test-card-lossy-tiled.jp2", 2.0)
 
 
-def test_lossless_rt() -> None:
-    im = roundtrip(test_card)
-    assert_image_equal(im, test_card)
+def test_lossless_rt(card: ImageFile.ImageFile) -> None:
+    im = roundtrip(card)
+    assert_image_equal(im, card)
 
 
-def test_lossy_rt() -> None:
-    im = roundtrip(test_card, quality_layers=[20])
-    assert_image_similar(im, test_card, 2.0)
+def test_lossy_rt(card: ImageFile.ImageFile) -> None:
+    im = roundtrip(card, quality_layers=[20])
+    assert_image_similar(im, card, 2.0)
 
 
-def test_tiled_rt() -> None:
-    im = roundtrip(test_card, tile_size=(128, 128))
-    assert_image_equal(im, test_card)
+def test_tiled_rt(card: ImageFile.ImageFile) -> None:
+    im = roundtrip(card, tile_size=(128, 128))
+    assert_image_equal(im, card)
 
 
-def test_tiled_offset_rt() -> None:
-    im = roundtrip(test_card, tile_size=(128, 128), tile_offset=(0, 0), offset=(32, 32))
-    assert_image_equal(im, test_card)
+def test_tiled_offset_rt(card: ImageFile.ImageFile) -> None:
+    im = roundtrip(card, tile_size=(128, 128), tile_offset=(0, 0), offset=(32, 32))
+    assert_image_equal(im, card)
 
 
-def test_tiled_offset_too_small() -> None:
+def test_tiled_offset_too_small(card: ImageFile.ImageFile) -> None:
     with pytest.raises(ValueError):
-        roundtrip(test_card, tile_size=(128, 128), tile_offset=(0, 0), offset=(128, 32))
+        roundtrip(card, tile_size=(128, 128), tile_offset=(0, 0), offset=(128, 32))
 
 
-def test_irreversible_rt() -> None:
-    im = roundtrip(test_card, irreversible=True, quality_layers=[20])
-    assert_image_similar(im, test_card, 2.0)
+def test_irreversible_rt(card: ImageFile.ImageFile) -> None:
+    im = roundtrip(card, irreversible=True, quality_layers=[20])
+    assert_image_similar(im, card, 2.0)
 
 
-def test_prog_qual_rt() -> None:
-    im = roundtrip(test_card, quality_layers=[60, 40, 20], progression="LRCP")
-    assert_image_similar(im, test_card, 2.0)
+def test_prog_qual_rt(card: ImageFile.ImageFile) -> None:
+    im = roundtrip(card, quality_layers=[60, 40, 20], progression="LRCP")
+    assert_image_similar(im, card, 2.0)
 
 
-def test_prog_res_rt() -> None:
-    im = roundtrip(test_card, num_resolutions=8, progression="RLCP")
-    assert_image_equal(im, test_card)
+def test_prog_res_rt(card: ImageFile.ImageFile) -> None:
+    im = roundtrip(card, num_resolutions=8, progression="RLCP")
+    assert_image_equal(im, card)
 
 
 @pytest.mark.parametrize("num_resolutions", range(2, 6))
-def test_default_num_resolutions(num_resolutions: int) -> None:
+def test_default_num_resolutions(
+    card: ImageFile.ImageFile, num_resolutions: int
+) -> None:
     d = 1 << (num_resolutions - 1)
-    im = test_card.resize((d - 1, d - 1))
+    im = card.resize((d - 1, d - 1))
     with pytest.raises(OSError):
         roundtrip(im, num_resolutions=num_resolutions)
     reloaded = roundtrip(im)
@@ -205,31 +214,31 @@ def test_header_errors() -> None:
             pass
 
 
-def test_layers_type(tmp_path: Path) -> None:
+def test_layers_type(card: ImageFile.ImageFile, tmp_path: Path) -> None:
     outfile = str(tmp_path / "temp_layers.jp2")
     for quality_layers in [[100, 50, 10], (100, 50, 10), None]:
-        test_card.save(outfile, quality_layers=quality_layers)
+        card.save(outfile, quality_layers=quality_layers)
 
     for quality_layers_str in ["quality_layers", ("100", "50", "10")]:
         with pytest.raises(ValueError):
-            test_card.save(outfile, quality_layers=quality_layers_str)
+            card.save(outfile, quality_layers=quality_layers_str)
 
 
-def test_layers() -> None:
+def test_layers(card: ImageFile.ImageFile) -> None:
     out = BytesIO()
-    test_card.save(out, "JPEG2000", quality_layers=[100, 50, 10], progression="LRCP")
+    card.save(out, "JPEG2000", quality_layers=[100, 50, 10], progression="LRCP")
     out.seek(0)
 
     with Image.open(out) as im:
         im.layers = 1
         im.load()
-        assert_image_similar(im, test_card, 13)
+        assert_image_similar(im, card, 13)
 
     out.seek(0)
     with Image.open(out) as im:
         im.layers = 3
         im.load()
-        assert_image_similar(im, test_card, 0.4)
+        assert_image_similar(im, card, 0.4)
 
 
 @pytest.mark.parametrize(
@@ -245,24 +254,30 @@ def test_layers() -> None:
         (None, {"no_jp2": False}, 4, b"jP"),
     ),
 )
-def test_no_jp2(name: str, args: dict[str, bool], offset: int, data: bytes) -> None:
+def test_no_jp2(
+    card: ImageFile.ImageFile,
+    name: str,
+    args: dict[str, bool],
+    offset: int,
+    data: bytes,
+) -> None:
     out = BytesIO()
     if name:
         out.name = name
-    test_card.save(out, "JPEG2000", **args)
+    card.save(out, "JPEG2000", **args)
     out.seek(offset)
     assert out.read(2) == data
 
 
-def test_mct() -> None:
+def test_mct(card: ImageFile.ImageFile) -> None:
     # Three component
     for val in (0, 1):
         out = BytesIO()
-        test_card.save(out, "JPEG2000", mct=val, no_jp2=True)
+        card.save(out, "JPEG2000", mct=val, no_jp2=True)
 
         assert out.getvalue()[59] == val
         with Image.open(out) as im:
-            assert_image_similar(im, test_card, 1.0e-3)
+            assert_image_similar(im, card, 1.0e-3)
 
     # Single component should have MCT disabled
     for val in (0, 1):
@@ -419,22 +434,22 @@ def test_comment() -> None:
             pass
 
 
-def test_save_comment() -> None:
+def test_save_comment(card: ImageFile.ImageFile) -> None:
     for comment in ("Created by Pillow", b"Created by Pillow"):
         out = BytesIO()
-        test_card.save(out, "JPEG2000", comment=comment)
+        card.save(out, "JPEG2000", comment=comment)
 
         with Image.open(out) as im:
             assert im.info["comment"] == b"Created by Pillow"
 
     out = BytesIO()
     long_comment = b" " * 65531
-    test_card.save(out, "JPEG2000", comment=long_comment)
+    card.save(out, "JPEG2000", comment=long_comment)
     with Image.open(out) as im:
         assert im.info["comment"] == long_comment
 
     with pytest.raises(ValueError):
-        test_card.save(out, "JPEG2000", comment=long_comment + b" ")
+        card.save(out, "JPEG2000", comment=long_comment + b" ")
 
 
 @pytest.mark.parametrize(
@@ -457,10 +472,10 @@ def test_crashes(test_file: str) -> None:
 
 
 @skip_unless_feature_version("jpg_2000", "2.4.0")
-def test_plt_marker() -> None:
+def test_plt_marker(card: ImageFile.ImageFile) -> None:
     # Search the start of the codesteam for PLT
     out = BytesIO()
-    test_card.save(out, "JPEG2000", no_jp2=True, plt=True)
+    card.save(out, "JPEG2000", no_jp2=True, plt=True)
     out.seek(0)
     while True:
         marker = out.read(2)

Tests/test_file_mpo.py

@@ -48,6 +48,8 @@ def test_unclosed_file() -> None:
 
 def test_closed_file() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         im = Image.open(test_files[0])
         im.load()
         im.close()
@@ -63,6 +65,8 @@ def test_seek_after_close() -> None:
 
 def test_context_manager() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         with Image.open(test_files[0]) as im:
             im.load()
 

Tests/test_file_png.py

@@ -338,6 +338,8 @@ class TestFilePng:
         with Image.open(TEST_PNG_FILE) as im:
             # Assert that there is no unclosed file warning
             with warnings.catch_warnings():
+                warnings.simplefilter("error")
+
                 im.verify()
 
         with Image.open(TEST_PNG_FILE) as im:

Tests/test_file_psd.py

@@ -35,6 +35,8 @@ def test_unclosed_file() -> None:
 
 def test_closed_file() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         im = Image.open(test_file)
         im.load()
         im.close()
@@ -42,6 +44,8 @@ def test_closed_file() -> None:
 
 def test_context_manager() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         with Image.open(test_file) as im:
             im.load()
 

Tests/test_file_spider.py

@@ -34,6 +34,8 @@ def test_unclosed_file() -> None:
 
 def test_closed_file() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         im = Image.open(TEST_FILE)
         im.load()
         im.close()
@@ -41,6 +43,8 @@ def test_closed_file() -> None:
 
 def test_context_manager() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         with Image.open(TEST_FILE) as im:
             im.load()
 

Tests/test_file_tar.py

@@ -37,11 +37,15 @@ def test_unclosed_file() -> None:
 
 def test_close() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         tar = TarIO.TarIO(TEST_TAR_FILE, "hopper.jpg")
         tar.close()
 
 
 def test_contextmanager() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         with TarIO.TarIO(TEST_TAR_FILE, "hopper.jpg"):
             pass

Tests/test_file_tiff.py

@@ -72,6 +72,8 @@ class TestFileTiff:
 
     def test_closed_file(self) -> None:
         with warnings.catch_warnings():
+            warnings.simplefilter("error")
+
             im = Image.open("Tests/images/multipage.tiff")
             im.load()
             im.close()
@@ -88,6 +90,8 @@ class TestFileTiff:
 
     def test_context_manager(self) -> None:
         with warnings.catch_warnings():
+            warnings.simplefilter("error")
+
             with Image.open("Tests/images/multipage.tiff") as im:
                 im.load()
 

Tests/test_file_webp.py

@@ -191,6 +191,8 @@ class TestFileWebp:
         file_path = "Tests/images/hopper.webp"
         with Image.open(file_path) as image:
             with warnings.catch_warnings():
+                warnings.simplefilter("error")
+
                 image.save(tmp_path / "temp.webp")
 
     def test_file_pointer_could_be_reused(self) -> None:

Tests/test_file_wmf.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+from io import BytesIO
 from pathlib import Path
 from typing import IO
 
@@ -61,6 +62,12 @@ def test_load_float_dpi() -> None:
     with Image.open("Tests/images/drawing.emf") as im:
         assert im.info["dpi"] == 1423.7668161434979
 
+    with open("Tests/images/drawing.emf", "rb") as fp:
+        data = fp.read()
+    b = BytesIO(data[:8] + b"\x06\xFA" + data[10:])
+    with Image.open(b) as im:
+        assert im.info["dpi"][0] == 2540
+
 
 def test_load_set_dpi() -> None:
     with Image.open("Tests/images/drawing.wmf") as im:

Tests/test_image.py

@@ -737,6 +737,8 @@ class TestImage:
         # Act/Assert
         with Image.open(test_file) as im:
             with warnings.catch_warnings():
+                warnings.simplefilter("error")
+
                 im.save(temp_file)
 
     def test_no_new_file_on_error(self, tmp_path: Path) -> None:

Tests/test_imageqt.py

@@ -52,4 +52,6 @@ def test_image(mode: str) -> None:
 
 def test_closed_file() -> None:
     with warnings.catch_warnings():
+        warnings.simplefilter("error")
+
         ImageQt.ImageQt("Tests/images/hopper.gif")

Tests/test_numpy.py

@@ -264,4 +264,6 @@ def test_no_resource_warning_for_numpy_array() -> None:
     with Image.open(test_file) as im:
         # Act/Assert
         with warnings.catch_warnings():
+            warnings.simplefilter("error")
+
             array(im)

docs/handbook/image-file-formats.rst

@@ -692,6 +692,30 @@ The :py:meth:`~PIL.Image.Image.save` method supports the following options:
    you fail to do this, you will get errors about not being able to load the
    ``_imaging`` DLL).
 
+MPO
+^^^
+
+Pillow reads and writes Multi Picture Object (MPO) files. When first opened, it loads
+the primary image. The :py:meth:`~PIL.Image.Image.seek` and
+:py:meth:`~PIL.Image.Image.tell` methods may be used to read other pictures from the
+file. The pictures are zero-indexed and random access is supported.
+
+.. _mpo-saving:
+
+Saving
+~~~~~~
+
+When calling :py:meth:`~PIL.Image.Image.save` to write an MPO file, by default
+only the first frame of a multiframe image will be saved. If the ``save_all``
+argument is present and true, then all frames will be saved, and the following
+option will also be available.
+
+**append_images**
+    A list of images to append as additional pictures. Each of the
+    images in the list can be single or multiframe images.
+
+    .. versionadded:: 9.3.0
+
 MSP
 ^^^
 
@@ -1435,30 +1459,6 @@ Note that there may be an embedded gamma of 2.2 in MIC files.
 
 To enable MIC support, you must install :pypi:`olefile`.
 
-MPO
-^^^
-
-Pillow identifies and reads Multi Picture Object (MPO) files, loading the primary
-image when first opened. The :py:meth:`~PIL.Image.Image.seek` and :py:meth:`~PIL.Image.Image.tell`
-methods may be used to read other pictures from the file. The pictures are
-zero-indexed and random access is supported.
-
-.. _mpo-saving:
-
-Saving
-~~~~~~
-
-When calling :py:meth:`~PIL.Image.Image.save` to write an MPO file, by default
-only the first frame of a multiframe image will be saved. If the ``save_all``
-argument is present and true, then all frames will be saved, and the following
-option will also be available.
-
-**append_images**
-    A list of images to append as additional pictures. Each of the
-    images in the list can be single or multiframe images.
-
-    .. versionadded:: 9.3.0
-
 PCD
 ^^^
 

src/PIL/WmfImagePlugin.py

@@ -128,7 +128,7 @@ class WmfStubImageFile(ImageFile.StubImageFile):
             size = x1 - x0, y1 - y0
 
             # calculate dots per inch from bbox and frame
-            xdpi = 2540.0 * (x1 - y0) / (frame[2] - frame[0])
+            xdpi = 2540.0 * (x1 - x0) / (frame[2] - frame[0])
             ydpi = 2540.0 * (y1 - y0) / (frame[3] - frame[1])
 
             self.info["wmf_bbox"] = x0, y0, x1, y1

src/_imagingft.c

@@ -82,6 +82,9 @@ struct {
     /* font objects */
 
     static FT_Library library;
+#ifdef Py_GIL_DISABLED
+static PyMutex ft_library_mutex;
+#endif
 
 typedef struct {
     PyObject_HEAD FT_Face face;
@@ -187,7 +190,9 @@ getfont(PyObject *self_, PyObject *args, PyObject *kw) {
 
     if (filename && font_bytes_size <= 0) {
         self->font_bytes = NULL;
+        MUTEX_LOCK(&ft_library_mutex);
         error = FT_New_Face(library, filename, index, &self->face);
+        MUTEX_UNLOCK(&ft_library_mutex);
     } else {
         /* need to have allocated storage for font_bytes for the life of the object.*/
         /* Don't free this before FT_Done_Face */
@@ -197,6 +202,7 @@ getfont(PyObject *self_, PyObject *args, PyObject *kw) {
         }
         if (!error) {
             memcpy(self->font_bytes, font_bytes, (size_t)font_bytes_size);
+            MUTEX_LOCK(&ft_library_mutex);
             error = FT_New_Memory_Face(
                 library,
                 (FT_Byte *)self->font_bytes,
@@ -204,6 +210,7 @@ getfont(PyObject *self_, PyObject *args, PyObject *kw) {
                 index,
                 &self->face
             );
+            MUTEX_UNLOCK(&ft_library_mutex);
         }
     }
 
@@ -1433,7 +1440,9 @@ font_setvaraxes(FontObject *self, PyObject *args) {
 static void
 font_dealloc(FontObject *self) {
     if (self->face) {
+        MUTEX_LOCK(&ft_library_mutex);
         FT_Done_Face(self->face);
+        MUTEX_UNLOCK(&ft_library_mutex);
     }
     if (self->font_bytes) {
         PyMem_Free(self->font_bytes);

src/thirdparty/pythoncapi_compat.h

@@ -7,7 +7,10 @@
 // https://github.com/python/pythoncapi_compat
 //
 // Latest version:
-// https://raw.githubusercontent.com/python/pythoncapi_compat/master/pythoncapi_compat.h
+// https://raw.githubusercontent.com/python/pythoncapi-compat/main/pythoncapi_compat.h
+//
+// This file was vendored from the following commit:
+// https://github.com/python/pythoncapi-compat/commit/0041177c4f348c8952b4c8980b2c90856e61c7c7
 //
 // SPDX-License-Identifier: 0BSD
 
@@ -45,6 +48,13 @@ extern "C" {
 #  define _PyObject_CAST(op) _Py_CAST(PyObject*, op)
 #endif
 
+#ifndef Py_BUILD_ASSERT
+#  define Py_BUILD_ASSERT(cond) \
+        do { \
+            (void)sizeof(char [1 - 2 * !(cond)]); \
+        } while(0)
+#endif
+
 
 // bpo-42262 added Py_NewRef() to Python 3.10.0a3
 #if PY_VERSION_HEX < 0x030A00A3 && !defined(Py_NewRef)
@@ -1338,6 +1348,166 @@ PyDict_SetDefaultRef(PyObject *d, PyObject *key, PyObject *default_value,
 }
 #endif
 
+#if PY_VERSION_HEX < 0x030D00B3
+#  define Py_BEGIN_CRITICAL_SECTION(op) {
+#  define Py_END_CRITICAL_SECTION() }
+#  define Py_BEGIN_CRITICAL_SECTION2(a, b) {
+#  define Py_END_CRITICAL_SECTION2() }
+#endif
+
+#if PY_VERSION_HEX < 0x030E0000 && PY_VERSION_HEX >= 0x03060000 && !defined(PYPY_VERSION)
+typedef struct PyUnicodeWriter PyUnicodeWriter;
+
+static inline void PyUnicodeWriter_Discard(PyUnicodeWriter *writer)
+{
+    _PyUnicodeWriter_Dealloc((_PyUnicodeWriter*)writer);
+    PyMem_Free(writer);
+}
+
+static inline PyUnicodeWriter* PyUnicodeWriter_Create(Py_ssize_t length)
+{
+    if (length < 0) {
+        PyErr_SetString(PyExc_ValueError,
+                        "length must be positive");
+        return NULL;
+    }
+
+    const size_t size = sizeof(_PyUnicodeWriter);
+    PyUnicodeWriter *pub_writer = (PyUnicodeWriter *)PyMem_Malloc(size);
+    if (pub_writer == _Py_NULL) {
+        PyErr_NoMemory();
+        return _Py_NULL;
+    }
+    _PyUnicodeWriter *writer = (_PyUnicodeWriter *)pub_writer;
+
+    _PyUnicodeWriter_Init(writer);
+    if (_PyUnicodeWriter_Prepare(writer, length, 127) < 0) {
+        PyUnicodeWriter_Discard(pub_writer);
+        return NULL;
+    }
+    writer->overallocate = 1;
+    return pub_writer;
+}
+
+static inline PyObject* PyUnicodeWriter_Finish(PyUnicodeWriter *writer)
+{
+    PyObject *str = _PyUnicodeWriter_Finish((_PyUnicodeWriter*)writer);
+    assert(((_PyUnicodeWriter*)writer)->buffer == NULL);
+    PyMem_Free(writer);
+    return str;
+}
+
+static inline int
+PyUnicodeWriter_WriteChar(PyUnicodeWriter *writer, Py_UCS4 ch)
+{
+    if (ch > 0x10ffff) {
+        PyErr_SetString(PyExc_ValueError,
+                        "character must be in range(0x110000)");
+        return -1;
+    }
+
+    return _PyUnicodeWriter_WriteChar((_PyUnicodeWriter*)writer, ch);
+}
+
+static inline int
+PyUnicodeWriter_WriteStr(PyUnicodeWriter *writer, PyObject *obj)
+{
+    PyObject *str = PyObject_Str(obj);
+    if (str == NULL) {
+        return -1;
+    }
+
+    int res = _PyUnicodeWriter_WriteStr((_PyUnicodeWriter*)writer, str);
+    Py_DECREF(str);
+    return res;
+}
+
+static inline int
+PyUnicodeWriter_WriteRepr(PyUnicodeWriter *writer, PyObject *obj)
+{
+    PyObject *str = PyObject_Repr(obj);
+    if (str == NULL) {
+        return -1;
+    }
+
+    int res = _PyUnicodeWriter_WriteStr((_PyUnicodeWriter*)writer, str);
+    Py_DECREF(str);
+    return res;
+}
+
+static inline int
+PyUnicodeWriter_WriteUTF8(PyUnicodeWriter *writer,
+                          const char *str, Py_ssize_t size)
+{
+    if (size < 0) {
+        size = (Py_ssize_t)strlen(str);
+    }
+
+    PyObject *str_obj = PyUnicode_FromStringAndSize(str, size);
+    if (str_obj == _Py_NULL) {
+        return -1;
+    }
+
+    int res = _PyUnicodeWriter_WriteStr((_PyUnicodeWriter*)writer, str_obj);
+    Py_DECREF(str_obj);
+    return res;
+}
+
+static inline int
+PyUnicodeWriter_WriteWideChar(PyUnicodeWriter *writer,
+                              const wchar_t *str, Py_ssize_t size)
+{
+    if (size < 0) {
+        size = (Py_ssize_t)wcslen(str);
+    }
+
+    PyObject *str_obj = PyUnicode_FromWideChar(str, size);
+    if (str_obj == _Py_NULL) {
+        return -1;
+    }
+
+    int res = _PyUnicodeWriter_WriteStr((_PyUnicodeWriter*)writer, str_obj);
+    Py_DECREF(str_obj);
+    return res;
+}
+
+static inline int
+PyUnicodeWriter_WriteSubstring(PyUnicodeWriter *writer, PyObject *str,
+                               Py_ssize_t start, Py_ssize_t end)
+{
+    if (!PyUnicode_Check(str)) {
+        PyErr_Format(PyExc_TypeError, "expect str, not %T", str);
+        return -1;
+    }
+    if (start < 0 || start > end) {
+        PyErr_Format(PyExc_ValueError, "invalid start argument");
+        return -1;
+    }
+    if (end > PyUnicode_GET_LENGTH(str)) {
+        PyErr_Format(PyExc_ValueError, "invalid end argument");
+        return -1;
+    }
+
+    return _PyUnicodeWriter_WriteSubstring((_PyUnicodeWriter*)writer, str,
+                                           start, end);
+}
+
+static inline int
+PyUnicodeWriter_Format(PyUnicodeWriter *writer, const char *format, ...)
+{
+    va_list vargs;
+    va_start(vargs, format);
+    PyObject *str = PyUnicode_FromFormatV(format, vargs);
+    va_end(vargs);
+    if (str == _Py_NULL) {
+        return -1;
+    }
+
+    int res = _PyUnicodeWriter_WriteStr((_PyUnicodeWriter*)writer, str);
+    Py_DECREF(str);
+    return res;
+}
+#endif  // PY_VERSION_HEX < 0x030E0000
 
 // gh-116560 added PyLong_GetSign() to Python 3.14.0a0
 #if PY_VERSION_HEX < 0x030E00A0
@@ -1354,6 +1524,175 @@ static inline int PyLong_GetSign(PyObject *obj, int *sign)
 #endif
 
 
+// gh-124502 added PyUnicode_Equal() to Python 3.14.0a0
+#if PY_VERSION_HEX < 0x030E00A0
+static inline int PyUnicode_Equal(PyObject *str1, PyObject *str2)
+{
+    if (!PyUnicode_Check(str1)) {
+        PyErr_Format(PyExc_TypeError, "first argument must be str, not %s",
+                     Py_TYPE(str1)->tp_name);
+        return -1;
+    }
+    if (!PyUnicode_Check(str2)) {
+        PyErr_Format(PyExc_TypeError, "second argument must be str, not %s",
+                     Py_TYPE(str2)->tp_name);
+        return -1;
+    }
+
+#if PY_VERSION_HEX >= 0x030d0000 && !defined(PYPY_VERSION)
+    PyAPI_FUNC(int) _PyUnicode_Equal(PyObject *str1, PyObject *str2);
+
+    return _PyUnicode_Equal(str1, str2);
+#elif PY_VERSION_HEX >= 0x03060000 && !defined(PYPY_VERSION)
+    return _PyUnicode_EQ(str1, str2);
+#elif PY_VERSION_HEX >= 0x03090000 && defined(PYPY_VERSION)
+    return _PyUnicode_EQ(str1, str2);
+#else
+    return (PyUnicode_Compare(str1, str2) == 0);
+#endif
+}
+#endif
+
+
+// gh-121645 added PyBytes_Join() to Python 3.14.0a0
+#if PY_VERSION_HEX < 0x030E00A0
+static inline PyObject* PyBytes_Join(PyObject *sep, PyObject *iterable)
+{
+    return _PyBytes_Join(sep, iterable);
+}
+#endif
+
+
+#if PY_VERSION_HEX < 0x030E00A0
+static inline Py_hash_t Py_HashBuffer(const void *ptr, Py_ssize_t len)
+{
+#if PY_VERSION_HEX >= 0x03000000 && !defined(PYPY_VERSION)
+    PyAPI_FUNC(Py_hash_t) _Py_HashBytes(const void *src, Py_ssize_t len);
+
+    return _Py_HashBytes(ptr, len);
+#else
+    Py_hash_t hash;
+    PyObject *bytes = PyBytes_FromStringAndSize((const char*)ptr, len);
+    if (bytes == NULL) {
+        return -1;
+    }
+    hash = PyObject_Hash(bytes);
+    Py_DECREF(bytes);
+    return hash;
+#endif
+}
+#endif
+
+
+#if PY_VERSION_HEX < 0x030E00A0
+static inline int PyIter_NextItem(PyObject *iter, PyObject **item)
+{
+    iternextfunc tp_iternext;
+
+    assert(iter != NULL);
+    assert(item != NULL);
+
+    tp_iternext = Py_TYPE(iter)->tp_iternext;
+    if (tp_iternext == NULL) {
+        *item = NULL;
+        PyErr_Format(PyExc_TypeError, "expected an iterator, got '%s'",
+                     Py_TYPE(iter)->tp_name);
+        return -1;
+    }
+
+    if ((*item = tp_iternext(iter))) {
+        return 1;
+    }
+    if (!PyErr_Occurred()) {
+        return 0;
+    }
+    if (PyErr_ExceptionMatches(PyExc_StopIteration)) {
+        PyErr_Clear();
+        return 0;
+    }
+    return -1;
+}
+#endif
+
+
+#if PY_VERSION_HEX < 0x030E00A0
+static inline PyObject* PyLong_FromInt32(int32_t value)
+{
+    Py_BUILD_ASSERT(sizeof(long) >= 4);
+    return PyLong_FromLong(value);
+}
+
+static inline PyObject* PyLong_FromInt64(int64_t value)
+{
+    Py_BUILD_ASSERT(sizeof(long long) >= 8);
+    return PyLong_FromLongLong(value);
+}
+
+static inline PyObject* PyLong_FromUInt32(uint32_t value)
+{
+    Py_BUILD_ASSERT(sizeof(unsigned long) >= 4);
+    return PyLong_FromUnsignedLong(value);
+}
+
+static inline PyObject* PyLong_FromUInt64(uint64_t value)
+{
+    Py_BUILD_ASSERT(sizeof(unsigned long long) >= 8);
+    return PyLong_FromUnsignedLongLong(value);
+}
+
+static inline int PyLong_AsInt32(PyObject *obj, int32_t *pvalue)
+{
+    Py_BUILD_ASSERT(sizeof(int) == 4);
+    int value = PyLong_AsInt(obj);
+    if (value == -1 && PyErr_Occurred()) {
+        return -1;
+    }
+    *pvalue = (int32_t)value;
+    return 0;
+}
+
+static inline int PyLong_AsInt64(PyObject *obj, int64_t *pvalue)
+{
+    Py_BUILD_ASSERT(sizeof(long long) == 8);
+    long long value = PyLong_AsLongLong(obj);
+    if (value == -1 && PyErr_Occurred()) {
+        return -1;
+    }
+    *pvalue = (int64_t)value;
+    return 0;
+}
+
+static inline int PyLong_AsUInt32(PyObject *obj, uint32_t *pvalue)
+{
+    Py_BUILD_ASSERT(sizeof(long) >= 4);
+    unsigned long value = PyLong_AsUnsignedLong(obj);
+    if (value == (unsigned long)-1 && PyErr_Occurred()) {
+        return -1;
+    }
+#if SIZEOF_LONG > 4
+    if ((unsigned long)UINT32_MAX < value) {
+        PyErr_SetString(PyExc_OverflowError,
+                        "Python int too large to convert to C uint32_t");
+        return -1;
+    }
+#endif
+    *pvalue = (uint32_t)value;
+    return 0;
+}
+
+static inline int PyLong_AsUInt64(PyObject *obj, uint64_t *pvalue)
+{
+    Py_BUILD_ASSERT(sizeof(long long) == 8);
+    unsigned long long value = PyLong_AsUnsignedLongLong(obj);
+    if (value == (unsigned long long)-1 && PyErr_Occurred()) {
+        return -1;
+    }
+    *pvalue = (uint64_t)value;
+    return 0;
+}
+#endif
+
+
 #ifdef __cplusplus
 }
 #endif