Drop support for python 3.9, use 3.12 by default

.github/workflows/python.yml

@@ -26,7 +26,7 @@ jobs:
     strategy:
       max-parallel: 4
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.10", "3.11", "3.12"]
 
     steps:
     - uses: actions/checkout@v4

.readthedocs.yaml

@@ -7,9 +7,9 @@ version: 2
 
 # Set the version of Python and other tools you might need
 build:
-  os: ubuntu-22.04
+  os: ubuntu-24.04
   tools:
-    python: "3.9"
+    python: "3.12"
 
 # Build documentation in the docs/ directory with Sphinx
 sphinx:

.sonarcloud.properties

@@ -10,7 +10,7 @@ sonar.sources=src
 # Encoding of the source code. Default is default system encoding
 #sonar.sourceEncoding=UTF-8
 
-sonar.python.version=3.7, 3.8, 3.9, 3.10
+sonar.python.version=3.10, 3.11, 3.12
 sonar.tests=tests
 
 #sonar.exclusions=path/to/generated/file.py, other-generated-file.dat

Dockerfile

@@ -1,7 +1,7 @@
 # This Dockerfile is designed to run a development environment for Argus,
 # with the Argus source code tree mounted at /argus
 #
-FROM python:3.10
+FROM python:3.12
 ENV DEBIAN_FRONTEND=noninteractive
 
 RUN apt-get update && apt-get install -y --no-install-recommends tini \

changelog.d/+drop-py39.removed.md

@@ -0,0 +1 @@
+Dropped support for testing and running on Python 3.9

docker/Dockerfile

@@ -1,6 +1,6 @@
 # Defines a production image for the Argus API server
 # Needs the repository root directory as its context
-FROM python:3.10
+FROM python:3.12
 ENV DEBIAN_FRONTEND=noninteractive
 
 RUN apt-get update && apt-get install -y --no-install-recommends tini build-essential

pyproject.toml

@@ -7,7 +7,7 @@ name = "argus-server"
 description = "Argus is an alert aggregator for monitoring systems"
 authors = [{name="Uninett Opensource", email="[email protected]"}]
 readme = "README.md"
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 license = {text = "GPL-3.0-or-later"}
 classifiers = [
     "Framework :: Django",
@@ -16,7 +16,6 @@ classifiers = [
     "Intended Audience :: System Administrators",
     "License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)",
     "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

@@ -1,16 +1,14 @@
 [tox]
 envlist =
     clean
-    py39-django{42}
     py{310,311,312}-django{42,50,51}
     coverage-html
 skipsdist = True
 skip_missing_interpreters = True
-basepython = python3.10
+basepython = python3.12
 
 [gh-actions]
 python =
-    3.9: py39
     3.10: py310
     3.11: py311
     3.12: py312
@@ -23,7 +21,6 @@ commands =
     -coverage erase
 
 [testenv:coverage-html]
-basepython = python3.10
 deps =
     coverage
 setenv =
@@ -60,7 +57,6 @@ commands =
     cp requirements-django42.txt requirements.txt
 
 [testenv:coverage-xml]
-basepython = python3.10
 deps =
     coverage
 setenv =