Drop support for Python 3.8 (#8183)

Co-authored-by: Andrew Murray <radarhere@users.noreply.github.com>
Co-authored-by: Andrew Murray <3112309+radarhere@users.noreply.github.com>

.appveyor.yml

@@ -21,9 +21,9 @@ environment:
   - PYTHON: C:/Python312
     ARCHITECTURE: x86
     APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2022
-  - PYTHON: C:/Python38-x64
+  - PYTHON: C:/Python39-x64
     ARCHITECTURE: AMD64
-    APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
+    APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
 
 
 install:
@@ -38,7 +38,7 @@ install:
 - 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\
+        c:\python39\python.exe c:\pillow\winbuild\build_prepare.py -v --depends=C:\pillow-depends\
         c:\pillow\winbuild\build\build_dep_all.cmd
         $host.SetShouldExit(0)
 - path C:\pillow\winbuild\build\bin;%PATH%

.ci/install.sh

@@ -48,7 +48,6 @@ if [[ $(uname) != CYGWIN* ]]; then
     # Pyroma uses non-isolated build and fails with old setuptools
     if [[
         $GHA_PYTHON_VERSION == pypy3.9
-        || $GHA_PYTHON_VERSION == 3.8
         || $GHA_PYTHON_VERSION == 3.9
     ]]; then
         # To match pyproject.toml

.github/workflows/test-cygwin.yml

@@ -35,7 +35,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-minor-version: [8, 9]
+        python-minor-version: [9]
 
     timeout-minutes: 40
 

.github/workflows/test-docker.yml

@@ -49,7 +49,6 @@ jobs:
           fedora-39-amd64,
           fedora-40-amd64,
           gentoo,
-          ubuntu-20.04-focal-amd64,
           ubuntu-22.04-jammy-amd64,
           ubuntu-24.04-noble-amd64,
         ]

.github/workflows/test-windows.yml

@@ -35,7 +35,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["pypy3.10", "pypy3.9", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+        python-version: ["pypy3.10", "pypy3.9", "3.9", "3.10", "3.11", "3.12", "3.13"]
 
     timeout-minutes: 30
 

.github/workflows/test.yml

@@ -48,7 +48,6 @@ jobs:
           "3.11",
           "3.10",
           "3.9",
-          "3.8",
         ]
         include:
         - python-version: "3.11"
@@ -59,13 +58,9 @@ jobs:
         # M1 only available for 3.10+
         - os: "macos-13"
           python-version: "3.9"
-        - os: "macos-13"
-          python-version: "3.8"
         exclude:
         - os: "macos-14"
           python-version: "3.9"
-        - os: "macos-14"
-          python-version: "3.8"
 
     runs-on: ${{ matrix.os }}
     name: ${{ matrix.os }} Python ${{ matrix.python-version }}

.github/workflows/wheels.yml

@@ -41,7 +41,6 @@ jobs:
         python-version:
           - pp39
           - pp310
-          - cp38
           - cp39
           - cp310
           - cp311
@@ -136,8 +135,6 @@ jobs:
           CIBW_MANYLINUX_PYPY_X86_64_IMAGE: ${{ matrix.manylinux }}
           CIBW_MANYLINUX_X86_64_IMAGE: ${{ matrix.manylinux }}
           CIBW_PRERELEASE_PYTHONS: True
-          CIBW_SKIP: pp38-*
-          CIBW_TEST_SKIP: cp38-macosx_arm64
           MACOSX_DEPLOYMENT_TARGET: ${{ matrix.macosx_deployment_target }}
 
       - uses: actions/upload-artifact@v4
@@ -208,7 +205,6 @@ jobs:
           CIBW_BEFORE_ALL: "{package}\\winbuild\\build\\build_dep_all.cmd"
           CIBW_CACHE_PATH: "C:\\cibw"
           CIBW_PRERELEASE_PYTHONS: True
-          CIBW_SKIP: pp38-*
           CIBW_TEST_SKIP: "*-win_arm64"
           CIBW_TEST_COMMAND: 'docker run --rm
             -v {project}:C:\pillow

Tests/helper.py

@@ -11,9 +11,10 @@ import subprocess
 import sys
 import sysconfig
 import tempfile
+from collections.abc import Sequence
 from functools import lru_cache
 from io import BytesIO
-from typing import Any, Callable, Sequence
+from typing import Any, Callable
 
 import pytest
 from packaging.version import parse as parse_version

Tests/test_file_eps.py

@@ -385,9 +385,10 @@ def test_timeout(test_file: str) -> None:
 def test_bounding_box_in_trailer() -> None:
     # Check bounding boxes are parsed in the same way
     # when specified in the header and the trailer
-    with Image.open("Tests/images/zero_bb_trailer.eps") as trailer_image, Image.open(
-        FILE1
-    ) as header_image:
+    with (
+        Image.open("Tests/images/zero_bb_trailer.eps") as trailer_image,
+        Image.open(FILE1) as header_image,
+    ):
         assert trailer_image.size == header_image.size
 
 

Tests/test_file_gif.py

@@ -1,9 +1,9 @@
 from __future__ import annotations
 
 import warnings
+from collections.abc import Generator
 from io import BytesIO
 from pathlib import Path
-from typing import Generator
 
 import pytest
 

Tests/test_file_pdf.py

@@ -5,8 +5,9 @@ import os
 import os.path
 import tempfile
 import time
+from collections.abc import Generator
 from pathlib import Path
-from typing import Any, Generator
+from typing import Any
 
 import pytest
 

Tests/test_file_tiff.py

@@ -2,10 +2,10 @@ from __future__ import annotations
 
 import os
 import warnings
+from collections.abc import Generator
 from io import BytesIO
 from pathlib import Path
 from types import ModuleType
-from typing import Generator
 
 import pytest
 

Tests/test_image_resample.py

@@ -1,7 +1,7 @@
 from __future__ import annotations
 
+from collections.abc import Generator
 from contextlib import contextmanager
-from typing import Generator
 
 import pytest
 

Tests/test_image_resize.py

@@ -4,9 +4,9 @@ Tests for resize functionality.
 
 from __future__ import annotations
 
+from collections.abc import Generator
 from itertools import permutations
 from pathlib import Path
-from typing import Generator
 
 import pytest
 

Tests/test_imagedraw.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 import contextlib
 import os.path
-from typing import Sequence
+from collections.abc import Sequence
 
 import pytest
 

Tests/test_imageops_usm.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import Generator
+from collections.abc import Generator
 
 import pytest
 

Tests/test_imagepath.py

@@ -3,7 +3,7 @@ from __future__ import annotations
 import array
 import math
 import struct
-from typing import Sequence
+from collections.abc import Sequence
 
 import pytest
 

docs/installation/basic-installation.rst

@@ -68,8 +68,8 @@ and :pypi:`olefile` for Pillow to read FPX and MIC images::
 .. tab:: Windows
 
     We provide Pillow binaries for Windows compiled for the matrix of supported
-    Pythons in the wheel format. These include x86, x86-64 and arm64 versions
-    (with the exception of Python 3.8 on arm64). These binaries include support
+    Pythons in the wheel format. These include x86, x86-64 and arm64 versions.
+    These binaries include support
     for all optional libraries except libimagequant and libxcb. Raqm support
     requires FriBiDi to be installed separately::
 

docs/installation/newer-versions.csv

@@ -1,5 +1,5 @@
 Python,3.13,3.12,3.11,3.10,3.9,3.8,3.7,3.6,3.5
-Pillow >= 11,Yes,Yes,Yes,Yes,Yes,Yes,,,
+Pillow >= 11,Yes,Yes,Yes,Yes,Yes,,,,
 Pillow 10.1 - 10.4,,Yes,Yes,Yes,Yes,Yes,,,
 Pillow 10.0,,,Yes,Yes,Yes,Yes,,,
 Pillow 9.3 - 9.5,,,Yes,Yes,Yes,Yes,Yes,,

docs/installation/platform-support.rst

@@ -35,14 +35,12 @@ These platforms are built and tested for every change.
 +----------------------------------+----------------------------+---------------------+
 | Gentoo                           | 3.9                        | x86-64              |
 +----------------------------------+----------------------------+---------------------+
-| macOS 13 Ventura                 | 3.8, 3.9                   | x86-64              |
+| macOS 13 Ventura                 | 3.9                        | x86-64              |
 +----------------------------------+----------------------------+---------------------+
 | macOS 14 Sonoma                  | 3.10, 3.11, 3.12, 3.13,    | arm64               |
 |                                  | PyPy3                      |                     |
 +----------------------------------+----------------------------+---------------------+
-| Ubuntu Linux 20.04 LTS (Focal)   | 3.8                        | x86-64              |
-+----------------------------------+----------------------------+---------------------+
-| Ubuntu Linux 22.04 LTS (Jammy)   | 3.8, 3.9, 3.10, 3.11,      | x86-64              |
+| Ubuntu Linux 22.04 LTS (Jammy)   | 3.9, 3.10, 3.11,           | x86-64              |
 |                                  | 3.12, 3.13, PyPy3          |                     |
 |                                  +----------------------------+---------------------+
 |                                  | 3.10                       | arm64v8             |
@@ -50,16 +48,16 @@ These platforms are built and tested for every change.
 | Ubuntu Linux 24.04 LTS (Noble)   | 3.12                       | x86-64, ppc64le,    |
 |                                  |                            | s390x               |
 +----------------------------------+----------------------------+---------------------+
-| Windows Server 2016              | 3.8                        | x86-64              |
+| Windows Server 2016              | 3.9                        | x86-64              |
 +----------------------------------+----------------------------+---------------------+
-| Windows Server 2022              | 3.8, 3.9, 3.10, 3.11,      | x86-64              |
+| Windows Server 2022              | 3.9, 3.10, 3.11,           | x86-64              |
 |                                  | 3.12, 3.13, PyPy3          |                     |
 |                                  +----------------------------+---------------------+
 |                                  | 3.12                       | x86                 |
 |                                  +----------------------------+---------------------+
 |                                  | 3.9 (MinGW)                | x86-64              |
 |                                  +----------------------------+---------------------+
-|                                  | 3.8, 3.9 (Cygwin)          | x86-64              |
+|                                  | 3.9 (Cygwin)               | x86-64              |
 +----------------------------------+----------------------------+---------------------+
 
 

docs/releasenotes/11.0.0.rst

@@ -17,6 +17,12 @@ TODO
 Backwards Incompatible Changes
 ==============================
 
+Python 3.8
+^^^^^^^^^^
+
+Pillow has dropped support for Python 3.8,
+which reached end-of-life in October 2024.
+
 PSFile
 ^^^^^^
 

pyproject.toml

@@ -18,12 +18,11 @@ license = { text = "HPND" }
 authors = [
   { name = "Jeffrey A. Clark", email = "aclark@aclark.net" },
 ]
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 classifiers = [
   "Development Status :: 6 - Mature",
   "License :: OSI Approved :: Historical Permission Notice and Disclaimer (HPND)",
   "Programming Language :: Python :: 3 :: Only",
-  "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
@@ -147,7 +146,7 @@ testpaths = [
 ]
 
 [tool.mypy]
-python_version = "3.8"
+python_version = "3.9"
 pretty = true
 disallow_any_generics = true
 enable_error_code = "ignore-without-code"

src/PIL/GifImagePlugin.py

@@ -32,7 +32,7 @@ import subprocess
 import sys
 from enum import IntEnum
 from functools import cached_property
-from typing import IO, TYPE_CHECKING, Any, List, Literal, NamedTuple, Union
+from typing import IO, TYPE_CHECKING, Any, Literal, NamedTuple, Union
 
 from . import (
     Image,
@@ -504,7 +504,7 @@ def _normalize_mode(im: Image.Image) -> Image.Image:
     return im.convert("L")
 
 
-_Palette = Union[bytes, bytearray, List[int], ImagePalette.ImagePalette]
+_Palette = Union[bytes, bytearray, list[int], ImagePalette.ImagePalette]
 
 
 def _normalize_palette(

src/PIL/Image.py

@@ -38,7 +38,7 @@ import struct
 import sys
 import tempfile
 import warnings
-from collections.abc import Callable, MutableMapping
+from collections.abc import Callable, MutableMapping, Sequence
 from enum import IntEnum
 from types import ModuleType
 from typing import (
@@ -47,8 +47,6 @@ from typing import (
     Any,
     Literal,
     Protocol,
-    Sequence,
-    Tuple,
     cast,
 )
 
@@ -1097,7 +1095,7 @@ class Image:
             if trns is not None:
                 try:
                     new_im.info["transparency"] = new_im.palette.getcolor(
-                        cast(Tuple[int, ...], trns),  # trns was converted to RGB
+                        cast(tuple[int, ...], trns),  # trns was converted to RGB
                         new_im,
                     )
                 except Exception:
@@ -3075,7 +3073,7 @@ def new(
         and isinstance(color, (list, tuple))
         and all(isinstance(i, int) for i in color)
     ):
-        color_ints: tuple[int, ...] = cast(Tuple[int, ...], tuple(color))
+        color_ints: tuple[int, ...] = cast(tuple[int, ...], tuple(color))
         if len(color_ints) == 3 or len(color_ints) == 4:
             # RGB or RGBA value for a P image
             from . import ImagePalette

src/PIL/ImageDraw.py

@@ -34,8 +34,9 @@ from __future__ import annotations
 import math
 import numbers
 import struct
+from collections.abc import Sequence
 from types import ModuleType
-from typing import TYPE_CHECKING, AnyStr, Callable, List, Sequence, Tuple, Union, cast
+from typing import TYPE_CHECKING, AnyStr, Callable, Union, cast
 
 from . import Image, ImageColor
 from ._deprecate import deprecate
@@ -51,7 +52,7 @@ except AttributeError:
 if TYPE_CHECKING:
     from . import ImageDraw2, ImageFont
 
-_Ink = Union[float, Tuple[int, ...], str]
+_Ink = Union[float, tuple[int, ...], str]
 
 """
 A simple 2D drawing interface for PIL images.
@@ -1124,7 +1125,7 @@ def _compute_regular_polygon_vertices(
             msg = "bounding_circle should only contain numeric data"
             raise ValueError(msg)
 
-        *centroid, polygon_radius = cast(List[float], list(bounding_circle))
+        *centroid, polygon_radius = cast(list[float], list(bounding_circle))
     elif len(bounding_circle) == 2 and isinstance(bounding_circle[0], (list, tuple)):
         if not all(
             isinstance(i, (int, float)) for i in bounding_circle[0]
@@ -1136,7 +1137,7 @@ def _compute_regular_polygon_vertices(
             msg = "bounding_circle centre should contain 2D coordinates (e.g. (x, y))"
             raise ValueError(msg)
 
-        centroid = cast(List[float], list(bounding_circle[0]))
+        centroid = cast(list[float], list(bounding_circle[0]))
         polygon_radius = cast(float, bounding_circle[1])
     else:
         msg = (

src/PIL/ImageFilter.py

@@ -18,8 +18,9 @@ from __future__ import annotations
 
 import abc
 import functools
+from collections.abc import Sequence
 from types import ModuleType
-from typing import TYPE_CHECKING, Any, Callable, Sequence, cast
+from typing import TYPE_CHECKING, Any, Callable, cast
 
 if TYPE_CHECKING:
     from . import _imaging

src/PIL/ImageOps.py

@@ -21,7 +21,8 @@ from __future__ import annotations
 import functools
 import operator
 import re
-from typing import Protocol, Sequence, cast
+from collections.abc import Sequence
+from typing import Protocol, cast
 
 from . import ExifTags, Image, ImagePalette
 

src/PIL/ImagePalette.py

@@ -18,7 +18,8 @@
 from __future__ import annotations
 
 import array
-from typing import IO, TYPE_CHECKING, Sequence
+from collections.abc import Sequence
+from typing import IO, TYPE_CHECKING
 
 from . import GimpGradientFile, GimpPaletteFile, ImageColor, PaletteFile
 

src/PIL/ImageTransform.py

@@ -14,7 +14,8 @@
 #
 from __future__ import annotations
 
-from typing import Any, Sequence
+from collections.abc import Sequence
+from typing import Any
 
 from . import Image
 

src/PIL/IptcImagePlugin.py

@@ -16,8 +16,8 @@
 #
 from __future__ import annotations
 
+from collections.abc import Sequence
 from io import BytesIO
-from typing import Sequence
 
 from . import Image, ImageFile
 from ._binary import i16be as i16

src/PIL/Jpeg2KImagePlugin.py

@@ -18,7 +18,7 @@ from __future__ import annotations
 import io
 import os
 import struct
-from typing import IO, Tuple, cast
+from typing import IO, cast
 
 from . import Image, ImageFile, ImagePalette, _binary
 
@@ -82,7 +82,7 @@ class BoxReader:
         self.remaining_in_box = -1
 
         # Read the length and type of the next box
-        lbox, tbox = cast(Tuple[int, bytes], self.read_fields(">I4s"))
+        lbox, tbox = cast(tuple[int, bytes], self.read_fields(">I4s"))
         if lbox == 1:
             lbox = cast(int, self.read_fields(">Q")[0])
             hlen = 16

src/PIL/PdfParser.py

@@ -8,7 +8,7 @@ import os
 import re
 import time
 import zlib
-from typing import TYPE_CHECKING, Any, List, NamedTuple, Union
+from typing import TYPE_CHECKING, Any, NamedTuple, Union
 
 
 # see 7.9.2.2 Text String Type on page 86 and D.3 PDFDocEncoding Character Set
@@ -240,7 +240,7 @@ class PdfName:
         return bytes(result)
 
 
-class PdfArray(List[Any]):
+class PdfArray(list[Any]):
     def __bytes__(self) -> bytes:
         return b"[ " + b" ".join(pdf_repr(x) for x in self) + b" ]"
 

src/PIL/SpiderImagePlugin.py

@@ -37,7 +37,7 @@ from __future__ import annotations
 import os
 import struct
 import sys
-from typing import IO, TYPE_CHECKING, Any, Tuple, cast
+from typing import IO, TYPE_CHECKING, Any, cast
 
 from . import Image, ImageFile
 
@@ -187,7 +187,7 @@ class SpiderImageFile(ImageFile.ImageFile):
     def convert2byte(self, depth: int = 255) -> Image.Image:
         extrema = self.getextrema()
         assert isinstance(extrema[0], float)
-        minimum, maximum = cast(Tuple[float, float], extrema)
+        minimum, maximum = cast(tuple[float, float], extrema)
         m: float = 1
         if maximum != minimum:
             m = depth / (maximum - minimum)

src/PIL/_typing.py

@@ -2,7 +2,8 @@ from __future__ import annotations
 
 import os
 import sys
-from typing import TYPE_CHECKING, Any, Protocol, Sequence, TypeVar, Union
+from collections.abc import Sequence
+from typing import TYPE_CHECKING, Any, Protocol, TypeVar, Union
 
 if TYPE_CHECKING:
     try:

tox.ini

@@ -3,7 +3,7 @@ requires =
     tox>=4.2
 env_list =
     lint
-    py{py3, 313, 312, 311, 310, 39, 38}
+    py{py3, 313, 312, 311, 310, 39}
 
 [testenv]
 deps =

winbuild/README.md

@@ -16,7 +16,7 @@ For more extensive info, see the [Windows build instructions](build.rst).
 
 The following is a simplified version of the script used on AppVeyor:
 ```
-set PYTHON=C:\Python38\bin
+set PYTHON=C:\Python39\bin
 cd /D C:\Pillow\winbuild
 %PYTHON%\python.exe build_prepare.py -v --depends=C:\pillow-depends
 build\build_dep_all.cmd

winbuild/build.rst

@@ -114,7 +114,7 @@ Example
 
 The following is a simplified version of the script used on AppVeyor::
 
-    set PYTHON=C:\Python38\bin
+    set PYTHON=C:\Python39\bin
     cd /D C:\Pillow\winbuild
     %PYTHON%\python.exe build_prepare.py -v --depends C:\pillow-depends
     build\build_dep_all.cmd