drop end of life python versions (#498)

Author: davidism

.github/workflows/tests.yaml

@@ -20,7 +20,6 @@ jobs:
           - {python: '3.12'}
           - {python: '3.11'}
           - {python: '3.10'}
-          - {python: '3.9'}
           - {name: PyPy, python: 'pypy-3.11', tox: pypy311}
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

CHANGES.rst

@@ -3,6 +3,8 @@ Version 3.1.0
 
 Unreleased
 
+-   Drop support for Python 3.9.
+
 
 Version 3.0.3
 -------------

pyproject.toml

@@ -16,7 +16,7 @@ classifiers = [
     "Topic :: Text Processing :: Markup :: HTML",
     "Typing :: Typed",
 ]
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 
 [project.urls]
 Donate = "https://palletsprojects.com/donate"
@@ -83,14 +83,14 @@ exclude_also = [
 ]
 
 [tool.mypy]
-python_version = "3.9"
+python_version = "3.10"
 files = ["src", "tests"]
 show_error_codes = true
 pretty = true
 strict = true
 
 [tool.pyright]
-pythonVersion = "3.9"
+pythonVersion = "3.10"
 include = ["src", "tests"]
 typeCheckingMode = "standard"
 
@@ -124,7 +124,7 @@ tag-only = [
 
 [tool.tox]
 env_list = [
-    "py3.13", "py3.13t", "py3.12", "py3.11", "py3.10", "py3.9",
+    "py3.13", "py3.13t", "py3.12", "py3.11", "py3.10",
     "pypy3.11",
     "style",
     "typing",