Drop support for Python 3.9 (#137)

Author: hugovk

.ci/install.sh

@@ -27,6 +27,7 @@ python3 -m pip install --upgrade wheel
 python3 -m pip install coverage
 python3 -m pip install defusedxml
 python3 -m pip install ipython
+python3 -m pip install numpy
 python3 -m pip install olefile
 python3 -m pip install -U pytest
 python3 -m pip install -U pytest-cov
@@ -36,9 +37,6 @@ python3 -m pip install pyroma
 # fails on beta 3.14 and PyPy
 python3 -m pip install --only-binary=:all: pyarrow || true
 
-
-python3 -m pip install numpy
-
 # PyQt6 doesn't support PyPy3
 if [[ $GHA_PYTHON_VERSION == 3.* ]]; then
     sudo apt-get -qq install libegl1 libxcb-cursor0 libxcb-icccm4 libxcb-image0 libxcb-keysyms1 libxcb-randr0 libxcb-render-util0 libxcb-shape0 libxkbcommon-x11-0

Tests/test_imagecms.py

@@ -208,9 +208,10 @@ def test_exceptions() -> 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"):
+    with pytest.raises(
+        ImageCms.PyCMSError,
+        match="'NoneType' object cannot be interpreted as an integer",
+    ):
         ImageCms.isIntentSupported(SRGB, None, None)  # type: ignore[arg-type]
 
 

docs/installation/platform-support.rst

@@ -19,13 +19,13 @@ These platforms are built and tested for every change.
 +==================================+============================+=====================+
 | Alpine                           | 3.12                       | x86-64              |
 +----------------------------------+----------------------------+---------------------+
-| Amazon Linux 2                   | 3.9                        | x86-64              |
+| Amazon Linux 2                   | 3.10                       | x86-64              |
 +----------------------------------+----------------------------+---------------------+
-| Amazon Linux 2023                | 3.9                        | x86-64              |
+| Amazon Linux 2023                | 3.11                       | x86-64              |
 +----------------------------------+----------------------------+---------------------+
 | Arch                             | 3.13                       | x86-64              |
 +----------------------------------+----------------------------+---------------------+
-| CentOS Stream 9                  | 3.9                        | x86-64              |
+| CentOS Stream 9                  | 3.10                       | x86-64              |
 +----------------------------------+----------------------------+---------------------+
 | CentOS Stream 10                 | 3.12                       | x86-64              |
 +----------------------------------+----------------------------+---------------------+
@@ -42,16 +42,16 @@ These platforms are built and tested for every change.
 +----------------------------------+----------------------------+---------------------+
 | Ubuntu Linux 22.04 LTS (Jammy)   | 3.10                       | x86-64              |
 +----------------------------------+----------------------------+---------------------+
-| Ubuntu Linux 24.04 LTS (Noble)   | 3.10, 3.11,                | x86-64              |
-|                                  | 3.12, 3.13, 3.14, PyPy3    |                     |
+| Ubuntu Linux 24.04 LTS (Noble)   | 3.10, 3.11, 3.12, 3.13,    | x86-64              |
+|                                  | 3.14, PyPy3                |                     |
 |                                  +----------------------------+---------------------+
 |                                  | 3.12                       | arm64v8, ppc64le,   |
 |                                  |                            | s390x               |
 +----------------------------------+----------------------------+---------------------+
 | Windows Server 2022              | 3.10                       | x86                 |
 |                                  +----------------------------+---------------------+
-|                                  | 3.11, 3.12, 3.13,          | x86-64              |
-|                                  | 3.14, PyPy3                |                     |
+|                                  | 3.11, 3.12, 3.13, 3.14,    | x86-64              |
+|                                  | PyPy3                      |                     |
 |                                  +----------------------------+---------------------+
 |                                  | 3.12 (MinGW)               | x86-64              |
 +----------------------------------+----------------------------+---------------------+

pyproject.toml

@@ -185,7 +185,6 @@ lint.ignore = [
   "PT011",  # pytest-raises-too-broad
   "PT012",  # pytest-raises-with-multiple-statements
   "PT017",  # pytest-assert-in-except
-  "PYI026", # flake8-pyi: typing.TypeAlias added in Python 3.10
   "PYI034", # flake8-pyi: typing.Self added in Python 3.11
   "UP038",  # pyupgrade: deprecated rule
 ]

src/PIL/GifImagePlugin.py

@@ -31,7 +31,7 @@
 import subprocess
 from enum import IntEnum
 from functools import cached_property
-from typing import IO, Any, Literal, NamedTuple, cast
+from typing import Any, NamedTuple, cast
 
 from . import (
     Image,
@@ -49,6 +49,8 @@
 
 TYPE_CHECKING = False
 if TYPE_CHECKING:
+    from typing import IO, Literal
+
     from . import _imaging
     from ._typing import Buffer
 

src/PIL/ImageDraw.py

@@ -33,22 +33,23 @@
 
 import math
 import struct
-from collections.abc import Callable, Sequence
+from collections.abc import Sequence
 from typing import cast
 
 from . import Image, ImageColor
 
-# experimental access to the outline API
-Outline: Callable[[], Image.core._Outline] = Image.core.outline
-
 TYPE_CHECKING = False
 if TYPE_CHECKING:
+    from collections.abc import Callable
     from types import ModuleType
     from typing import Any, AnyStr
 
     from . import ImageDraw2, ImageFont
     from ._typing import Coords
 
+# experimental access to the outline API
+Outline: Callable[[], Image.core._Outline] = Image.core.outline
+
 _Ink = float | tuple[int, ...] | str
 
 """

src/PIL/_imagingcms.pyi

@@ -1,14 +1,14 @@
 import datetime
 import sys
-from typing import Literal, SupportsFloat, TypedDict
+from typing import Literal, SupportsFloat, TypeAlias, TypedDict
 
 from ._typing import CapsuleType
 
 littlecms_version: str | None
 
-_Tuple3f = tuple[float, float, float]
-_Tuple2x3f = tuple[_Tuple3f, _Tuple3f]
-_Tuple3x3f = tuple[_Tuple3f, _Tuple3f, _Tuple3f]
+_Tuple3f: TypeAlias = tuple[float, float, float]
+_Tuple2x3f: TypeAlias = tuple[_Tuple3f, _Tuple3f]
+_Tuple3x3f: TypeAlias = tuple[_Tuple3f, _Tuple3f, _Tuple3f]
 
 class _IccMeasurementCondition(TypedDict):
     observer: int