Drop support for EOL Python 3.9

Author: hugovk

.github/workflows/ci.yml

@@ -13,7 +13,6 @@ jobs:
       max-parallel: 7
       matrix:
         python-version:
-        - 3.9
         - "3.10"
         - "3.11"
         - "3.12"

.readthedocs.yaml

@@ -5,7 +5,7 @@ build:
   apt_packages:
     - graphviz
   tools:
-    python: "3.9"
+    python: "3.10"
 
 sphinx:
   configuration: docs/source/conf.py

README.rst

@@ -112,7 +112,7 @@ library.
 It has a test suite with 100.0% coverage for both statements and
 branches.
 
-Currently it supports Python 3 (testing on 3.9-3.14) and PyPy 3.
+Currently it supports Python 3 (testing on 3.10-3.14) and PyPy 3.
 The last Python 2-compatible version was h11 0.11.x.
 (Originally it had a Cython wrapper for `http-parser
 <https://github.com/nodejs/http-parser>`_ and a beautiful nested state

setup.py

@@ -15,7 +15,7 @@
     packages=find_packages(exclude=["h11.tests"]),
     package_data={'h11': ['py.typed']},
     url="https://github.com/python-hyper/h11",
-    python_requires=">=3.9",
+    python_requires=">=3.10",
     classifiers=[
         "Development Status :: 3 - Alpha",
         "Intended Audience :: Developers",
@@ -24,7 +24,6 @@
         "Programming Language :: Python :: Implementation :: PyPy",
         "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3 :: Only",
-        "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: 3.12",

tox.ini

@@ -1,10 +1,9 @@
 [tox]
-envlist = format, py{39, 310, 311, 312, 313, 314, py3}, mypy
+envlist = format, py{310, 311, 312, 313, 314, py3}, mypy
 
 [gh-actions]
 python =
-    3.9: py39, format, mypy
-    3.10: py310
+    3.10: py310, format, mypy
     3.11: py311
     3.12: py312
     3.13: py313
@@ -16,14 +15,14 @@ deps = -r{toxinidir}/test-requirements.txt
 commands = pytest --cov=h11 --cov-config=.coveragerc h11
 
 [testenv:format]
-basepython = python3.9
+basepython = python3.10
 deps = -r{toxinidir}/format-requirements.txt
 commands =
     black --check --diff h11/ bench/ examples/ fuzz/
     isort --check --diff --profile black --dt h11 bench examples fuzz
 
 [testenv:mypy]
-basepython = python3.9
+basepython = python3.10
 deps =
     mypy==1.8.0
     pytest