Test under Python 3.11, update CI workflow to latest versions of acti…

…ons (#220)

* Test under Python 3.11

* Do not set PYTHONWARNINGS=error during CI pytest

That catches, e.g., deprecation warnings from any package (beyond our
control).

Note that we do configure a pytest warning filter in pyproject.toml
which will generate errors for any warnings generated from within our
code.

* CI: update to actions/checkout@v3, actions/setup-python@v4, actions/cache@v3

* Hack installation of PyYAML on pypy

Currently PyYAML fails to build with Cython 3.0.0a, thus
it fails to install from sdist using `pip install --pre`.

See yaml/pyyaml#601

* Update pre-commit plugin versions to latest

.github/workflows/python-package.yml

@@ -11,29 +11,35 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python_version: ["3.6", "3.7", "3.8", "3.9", "3.10", "pypy3"]
+        python_version: ["3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "pypy3.9"]
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
       with:
         python-version: ${{ matrix.python_version }}
     - name: set pre-commit cache
-      uses: actions/cache@v2
+      uses: actions/cache@v3
       with:
         path: |
           ~/.cache/pre-commit
           ~/.cache/pip
         key: ${{ matrix.python_version }}-${{ hashFiles('.pre-commit-config.yaml') }}-${{ hashFiles('setup.py') }}
+
+    - name: Use latest pip
+      run: python -m pip install --upgrade pip
+    - name: Pre-install PyYAML without --pre
+      if: ${{ startsWith(matrix.python_version, 'pypy') }}
+      # Temporary workaround:
+      # PyYAML fails to build with Cython 3.0.0a
+      # see https://github.com/yaml/pyyaml/issues/601
+      run: pip install PyYAML
     - name: Install dependencies
-      run: |
-        python -m pip install --upgrade pip
-        pip install --pre -e '.[dev]'
+      run: pip install --pre -e '.[dev]'
+
     - name: Pre-commit hooks
       if: ${{ matrix.python_version != 'pypy3' && matrix.python_version != '3.6' }}
       run: pre-commit run --all-files
     - name: Test with pytest
       run: pytest
-      env:
-        PYTHONWARNINGS: error

.pre-commit-config.yaml

@@ -1,19 +1,19 @@
 repos:
 - repo: https://github.com/asottile/pyupgrade
-  rev: v3.0.0
+  rev: v3.2.0
   hooks:
   - id: pyupgrade
     args: ["--py36-plus"]
 - repo: https://github.com/python/black
-  rev: 22.8.0
+  rev: 22.10.0
   hooks:
   - id: black
     language_version: python3
 - repo: https://gitlab.com/pycqa/flake8
   rev: 5.0.4
   hooks:
   - id: flake8
-    additional_dependencies: ['flake8-bugbear==22.9.23']
+    additional_dependencies: ['flake8-bugbear==22.10.27']
 - repo: https://github.com/pre-commit/mirrors-mypy
   rev: v0.982
   hooks:

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.black]
 line-length = 88
-target-version = ['py36', 'py37', 'py38', 'py39', 'py310']
+target-version = ['py36', 'py37', 'py38', 'py39', 'py310', 'py310']
 
 [tool.pytest.ini_options]
 filterwarnings = [

setup.py

@@ -12,6 +12,8 @@
     "Programming Language :: Python :: 3.7",
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
     "Topic :: Internet :: WWW/HTTP :: Dynamic Content :: CGI Tools/Libraries",
 ]