Add Python 3.13 beta to CI

.github/workflows/checks.yml

@@ -12,7 +12,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-        - python-version: "3.12"
+        - python-version: "3.13.0-beta.1"
           env:
             TOXENV: pylint
         - python-version: 3.8
@@ -24,7 +24,7 @@ jobs:
         - python-version: "3.11"  # Keep in sync with .readthedocs.yml
           env:
             TOXENV: docs
-        - python-version: "3.12"
+        - python-version: "3.13.0-beta.1"
           env:
             TOXENV: twinecheck
 
@@ -36,6 +36,12 @@ jobs:
       with:
         python-version: ${{ matrix.python-version }}
 
+    - name: Install system libraries
+      if: contains(matrix.python-version, 'beta')
+      run: |
+        sudo apt-get update
+        sudo apt-get install libxml2-dev libxslt-dev
+
     - name: Run check
       env: ${{ matrix.env }}
       run: |

.github/workflows/publish.yml

@@ -15,7 +15,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v4
         with:
-          python-version: 3.12
+          python-version: "3.13.0-beta.1"
       - run: | 
           pip install --upgrade build twine
           python -m build

.github/workflows/tests-macos.yml

@@ -11,7 +11,7 @@ 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", "3.13.0-beta.1"]
 
     steps:
     - uses: actions/checkout@v4

.github/workflows/tests-ubuntu.yml

@@ -24,7 +24,10 @@ jobs:
         - python-version: "3.12"
           env:
             TOXENV: py
-        - python-version: "3.12"
+        - python-version: "3.13.0-beta.1"
+          env:
+            TOXENV: py
+        - python-version: "3.13.0-beta.1"
           env:
             TOXENV: asyncio
         - python-version: pypy3.9
@@ -51,10 +54,10 @@ jobs:
           env:
             TOXENV: botocore-pinned
 
-        - python-version: "3.12"
+        - python-version: "3.13.0-beta.1"
           env:
             TOXENV: extra-deps
-        - python-version: "3.12"
+        - python-version: "3.13.0-beta.1"
           env:
             TOXENV: botocore
 
@@ -67,7 +70,7 @@ jobs:
         python-version: ${{ matrix.python-version }}
 
     - name: Install system libraries
-      if: contains(matrix.python-version, 'pypy') || contains(matrix.env.TOXENV, 'pinned')
+      if: contains(matrix.python-version, 'pypy') || contains(matrix.python-version, 'beta') || contains(matrix.env.TOXENV, 'pinned')
       run: |
         sudo apt-get update
         sudo apt-get install libxml2-dev libxslt-dev

.github/workflows/tests-windows.yml

@@ -27,7 +27,10 @@ jobs:
         - python-version: "3.12"
           env:
             TOXENV: py
-        - python-version: "3.12"
+        - python-version: "3.13.0-beta.1"
+          env:
+            TOXENV: py
+        - python-version: "3.13.0-beta.1"
           env:
             TOXENV: asyncio
 

setup.py

@@ -64,6 +64,7 @@
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: 3.12",
+        "Programming Language :: Python :: 3.13",
         "Programming Language :: Python :: Implementation :: CPython",
         "Programming Language :: Python :: Implementation :: PyPy",
         "Topic :: Internet :: WWW/HTTP",

tox.ini

@@ -19,13 +19,15 @@ deps =
     sybil >= 1.3.0  # https://github.com/cjw296/sybil/issues/20#issuecomment-605433422
     testfixtures
     pywin32; sys_platform == "win32"
+    cffi >= 1.17.0rc1; python_version >= '3.13'
 
 [testenv]
 deps =
     {[test-requirements]deps}
 
     # mitmproxy does not support PyPy
-    mitmproxy; implementation_name != 'pypy'
+    # mitmproxy requires zstandard which is not yet available on 3.13
+    mitmproxy; implementation_name != 'pypy' and python_version < '3.13'
     # https://github.com/pallets/werkzeug/pull/2768 breaks flask, required by
     # mitmproxy.
     werkzeug < 3; python_version < '3.9' and implementation_name != 'pypy'
@@ -86,8 +88,8 @@ commands =
 [testenv:twinecheck]
 basepython = python3
 deps =
-    twine==4.0.2
-    build==1.0.3
+    twine==5.1.0
+    build==1.2.1
 commands =
     python -m build --sdist
     twine check dist/*
@@ -149,13 +151,13 @@ deps =
     # restrictions in their deps, so we need to pin old markupsafe here too.
     markupsafe < 2.1.0
     robotexclusionrulesparser
-    Pillow
+    Pillow; python_version < '3.13'
     Twisted[http2]
-    uvloop; platform_system != "Windows"
-    bpython  # optional for shell wrapper tests
+    uvloop; platform_system != "Windows" and python_version < '3.13'
+    bpython; python_version < '3.13'  # optional for shell wrapper tests
     brotli; implementation_name != 'pypy'  # optional for HTTP compress downloader middleware tests
     brotlicffi; implementation_name == 'pypy'  # optional for HTTP compress downloader middleware tests
-    zstandard; implementation_name != 'pypy'  # optional for HTTP compress downloader middleware tests
+    zstandard; implementation_name != 'pypy' and python_version < '3.13'  # optional for HTTP compress downloader middleware tests
     ipython
 
 [testenv:extra-deps-pinned]