Drop Python 3.9 support and update to PyPy 3.11

Python 3.9 reached end-of-life on October 5, 2025. This commit removes
support for Python 3.9 and updates the minimum required version to
Python 3.10.

Changes:
- Update requires-python from >=3.9 to >=3.10 in pyproject.toml
- Remove Python 3.9 classifier from package metadata
- Remove Python 3.9 and PyPy 3.9 from CI test matrix
- Remove py39 from tox envlist and gh-actions mapping
- Remove mypy type checking for Python 3.9
- Update PyPy from 3.10 to 3.11 (latest stable version)
- Add py314 to tox envlist for Python 3.14 support
- Add support for Python 3.14t (free-threading build) in CI

The project now supports Python 3.10, 3.11, 3.12, 3.13, 3.14 (including
free-threading builds), and PyPy 3.11.

Author: theskumar

.github/workflows/test.yml

@@ -13,7 +13,7 @@ jobs:
         os:
           - ubuntu-latest
         python-version:
-          ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14", "3.14t", pypy3.9, pypy3.10]
+          ["3.10", "3.11", "3.12", "3.13", "3.14", "3.14t", pypy3.11]
 
     steps:
       - uses: actions/checkout@v6

pyproject.toml

@@ -22,7 +22,6 @@ classifiers = [
     "Development Status :: 5 - Production/Stable",
     "Programming Language :: Python",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
@@ -37,7 +36,7 @@ classifiers = [
     "Environment :: Web Environment",
 ]
 
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 
 dynamic = ["version", "readme"]
 

tox.ini

@@ -1,27 +1,27 @@
 [tox]
-envlist = lint,py{39,310,311,312,313},pypy3,manifest,coverage-report
+envlist = lint,py{310,311,312,313,314},pypy3,manifest,coverage-report
 
 [gh-actions]
 python =
-    3.9: py39
     3.10: py310
     3.11: py311
     3.12: py312
     3.13: py313, lint, manifest
     3.14: py314
-    pypy-3.9: pypy3
+    3.14t: py314
+    pypy-3.11: pypy3
 
 [testenv]
 deps =
     pytest
     pytest-cov
     sh >= 2.0.2, <3
     click
-    py{39,310,311,312,313,3.14,pypy3}: ipython
+    py{310,311,312,313,314,pypy3}: ipython
 commands = pytest --cov --cov-report=term-missing {posargs}
 depends =
-    py{39,310,311,312,313,314},pypy3: coverage-clean
-    coverage-report: py{39,310,311,312,313,314},pypy3
+    py{310,311,312,313,314},pypy3: coverage-clean
+    coverage-report: py{310,311,312,313,314},pypy3
 
 [testenv:lint]
 skip_install = true
@@ -36,7 +36,7 @@ commands =
     mypy --python-version=3.12 src tests
     mypy --python-version=3.11 src tests
     mypy --python-version=3.10 src tests
-    mypy --python-version=3.9 src tests
+
 
 [testenv:format]
 skip_install = true