Add support for Python 3.14

Author: arthurdejong

.github/workflows/test.yml

@@ -14,7 +14,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.8, 3.9, '3.10', 3.11, 3.12, 3.13, pypy3.9]
+        python-version: [3.8, 3.9, '3.10', 3.11, 3.12, 3.13, 3.14, pypy3.9]
     steps:
       - uses: actions/checkout@v3
       - name: Set up Python ${{ matrix.python-version }}

setup.py

@@ -2,7 +2,7 @@
 
 # setup.py - python-stdnum installation script
 #
-# Copyright (C) 2010-2025 Arthur de Jong
+# Copyright (C) 2010-2026 Arthur de Jong
 #
 # This library is free software; you can redistribute it and/or
 # modify it under the terms of the GNU Lesser General Public
@@ -69,6 +69,7 @@
         'Programming Language :: Python :: 3.11',
         'Programming Language :: Python :: 3.12',
         'Programming Language :: Python :: 3.13',
+        'Programming Language :: Python :: 3.14',
         'Programming Language :: Python :: Implementation :: PyPy',
         'Topic :: Office/Business :: Financial',
         'Topic :: Software Development :: Libraries :: Python Modules',

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py{38,39,310,311,312,313,py3},flake8,mypy,docs,headers
+envlist = py{38,39,310,311,312,313,314,py3},flake8,mypy,docs,headers
 skip_missing_interpreters = true
 
 [testenv]
@@ -42,6 +42,7 @@ commands =
     mypy -p stdnum --python-version 3.11
     mypy -p stdnum --python-version 3.12
     mypy -p stdnum --python-version 3.13
+    mypy -p stdnum --python-version 3.14
 
 [testenv:docs]
 use_develop = true