Add support for Python 3.13

Fixes celery#2051.

.github/workflows/ci.yaml

@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
         exclude:
           - python-version: "3.9"
     steps:
@@ -19,6 +19,7 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
+          allow-prereleases: true
       - name: Install dependencies
         run: pip install --upgrade pip wheel tox tox-docker
       - name: Run unittest
@@ -31,7 +32,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.8,3.9,"3.10","3.11","3.12"]
+        python-version: [3.8,3.9,"3.10","3.11","3.12","3.13"]
         experimental: [false]
         include:
           - python-version: pypy3.9
@@ -46,6 +47,10 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
+          allow-prereleases: true
+      - name: Allow pre-releases on Python 3.13
+        run: echo "PIP_PRE=1" >> $GITHUB_ENV
+        if: ${{ python-version == '3.13' }}
       - name: Install dependencies
         run: pip install --upgrade pip wheel tox tox-docker
       # Tox fails if a Python versions contains a hyphen, this changes "pypy-3.9" to "pypy3.9".
@@ -76,6 +81,7 @@ jobs:
         uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
+          allow-prereleases: true
       - name: Install dependencies
         run: pip install --upgrade pip wheel tox tox-docker
       - name: Run flake8

kombu/transport/redis.py

@@ -89,7 +89,7 @@
 
 
 logger = get_logger('kombu.transport.redis')
-crit, warn = logger.critical, logger.warn
+crit, warn = logger.critical, logger.warning
 
 DEFAULT_PORT = 6379
 DEFAULT_DB = 0

requirements/extras/confluentkafka.txt

@@ -1 +1 @@
-confluent-kafka>=2.2.0
+confluent-kafka>=2.2.0 ; python_version < "3.13"

requirements/extras/zstd.txt

@@ -1 +1 @@
-zstandard
+zstandard ; python_version < "3.13"

tox.ini

@@ -1,10 +1,10 @@
 [tox]
 envlist =
-    {pypy3.9,3.8,3.9,3.10,3.11,3.12}-unit
-    {pypy3.9,3.8,3.9,3.10,3.11,3.12}-linux-integration-py-amqp
+    {pypy3.9,3.8,3.9,3.10,3.11,3.12,3.13}-unit
+    {pypy3.9,3.8,3.9,3.10,3.11,3.12,3.13}-linux-integration-py-amqp
     {pypy3.9,3.8,3.9,3.10,3.11}-linux-integration-redis
     {pypy3.9,3.8,3.9,3.10,3.11}-linux-integration-mongodb
-    {3.8,3.9,3.10,3.11,3.12}-linux-integration-kafka
+    {3.8,3.9,3.10,3.11,3.12,3.13}-linux-integration-kafka
     flake8
     apicheck
     pydocstyle
@@ -20,6 +20,7 @@ python =
     3.10: py310, mypy
     3.11: py311
     3.12: py312
+    3.13: py313
 
 [testenv]
 sitepackages = False
@@ -28,10 +29,10 @@ passenv =
   DISTUTILS_USE_SDK
 deps=
     -r{toxinidir}/requirements/dev.txt
-    apicheck,pypy3.9,3.8,3.9,3.10,3.11,3.12: -r{toxinidir}/requirements/default.txt
-    apicheck,pypy3.9,3.8,3.9,3.10,3.11,3.12: -r{toxinidir}/requirements/test.txt
-    apicheck,pypy3.9,3.8,3.9,3.10,3.11,3.12: -r{toxinidir}/requirements/test-ci.txt
-    apicheck,3.8-linux,3.9-linux,3.10-linux,3.11-linux,3.12-linux: -r{toxinidir}/requirements/extras/confluentkafka.txt
+    apicheck,pypy3.9,3.8,3.9,3.10,3.11,3.12,3.13: -r{toxinidir}/requirements/default.txt
+    apicheck,pypy3.9,3.8,3.9,3.10,3.11,3.12,3.13: -r{toxinidir}/requirements/test.txt
+    apicheck,pypy3.9,3.8,3.9,3.10,3.11,3.12,3.13: -r{toxinidir}/requirements/test-ci.txt
+    apicheck,3.8-linux,3.9-linux,3.10-linux,3.11-linux,3.12-linux,3.13-linux: -r{toxinidir}/requirements/extras/confluentkafka.txt
     apicheck,linkcheck: -r{toxinidir}/requirements/docs.txt
     flake8,pydocstyle,mypy: -r{toxinidir}/requirements/pkgutils.txt
 
@@ -50,6 +51,7 @@ basepython =
     3.10,apicheck,pydocstyle,flake8,linkcheck,cov,mypy: python3.10
     3.11: python3.11
     3.12: python3.12
+    3.13: python3.13
 
 install_command = python -m pip --disable-pip-version-check install {opts} {packages}
 
@@ -135,4 +137,4 @@ commands =
     pydocstyle {toxinidir}/kombu
 
 [testenv:mypy]
-commands = python -m mypy --config-file setup.cfg
+commands = python -m mypy --config-file setup.cfg