ci: Run CI for Python version 3.13

.github/workflows/benchmark-remote.yml

@@ -26,12 +26,12 @@ jobs:
 
       - name: Clone Polars-benchmark
         run: |
-          git clone --depth=1 https://github.com/pola-rs/polars-benchmark.git 
+          git clone --depth=1 https://github.com/pola-rs/polars-benchmark.git
 
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: '3.13'
 
       - name: Create virtual environment
         run: |
@@ -46,7 +46,7 @@ jobs:
           # Install typing-extensions separately whilst the `--extra-index-url` in `requirements-ci.txt`
           # doesn't have an up-to-date typing-extensions, see
           # https://github.com/astral-sh/uv/issues/6028#issuecomment-2287232150
-          uv pip install -U typing-extensions 
+          uv pip install -U typing-extensions
           uv pip install --compile-bytecode -r requirements-dev.txt -r requirements-ci.txt --verbose
 
       - name: Install Polars-Benchmark dependencies
@@ -68,7 +68,7 @@ jobs:
         working-directory: polars-benchmark
         run: |
           "$HOME/py-polars-cache/run-benchmarks.sh" | tee ../py-polars/benchmark-results
-      
+
       - name: Cache the Polars build
         if: ${{ github.ref == 'refs/heads/main' }}
         working-directory: py-polars

.github/workflows/benchmark.yml

@@ -34,7 +34,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: '3.13'
 
       - name: Set up Graphviz
         uses: ts-graphviz/setup-graphviz@v2
@@ -52,7 +52,7 @@ jobs:
           # Install typing-extensions separately whilst the `--extra-index-url` in `requirements-ci.txt`
           # doesn't have an up-to-date typing-extensions, see
           # https://github.com/astral-sh/uv/issues/6028#issuecomment-2287232150
-          uv pip install -U typing-extensions 
+          uv pip install -U typing-extensions
           uv pip install --compile-bytecode -r requirements-dev.txt -r requirements-ci.txt --verbose
 
       - name: Set up Rust
@@ -87,4 +87,4 @@ jobs:
         working-directory: py-polars
         env:
           POLARS_AUTO_NEW_STREAMING: 1
-        run: pytest -n auto --dist loadgroup -m "not may_fail_auto_streaming and not slow and not write_disk and not release and not docs and not hypothesis and not benchmark and not ci_only"
+        run: pytest -n auto --dist loadgroup -m "not may_fail_auto_streaming and not slow and not write_disk and not release and not docs and not hypothesis and not benchmark and not ci_only"

.github/workflows/docs-python.yml

@@ -31,7 +31,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: '3.13'
 
       - name: Create virtual environment
         run: |

.github/workflows/lint-python.yml

@@ -39,7 +39,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['3.9', '3.12']
+        python-version: ['3.9', '3.13']
 
     steps:
       - uses: actions/checkout@v4

.github/workflows/test-python.yml

@@ -39,10 +39,10 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        python-version: ['3.9', '3.12']
+        python-version: ['3.9', '3.12', '3.13']
         include:
           - os: windows-latest
-            python-version: '3.12'
+            python-version: '3.13'
 
     steps:
       - uses: actions/checkout@v4
@@ -85,7 +85,7 @@ jobs:
         run: maturin develop
 
       - name: Run doctests
-        if: github.ref_name != 'main' && matrix.python-version == '3.12' && matrix.os == 'ubuntu-latest'
+        if: github.ref_name != 'main' && matrix.python-version == '3.13' && matrix.os == 'ubuntu-latest'
         run: |
           python tests/docs/run_doctest.py
           pytest tests/docs/test_user_guide.py -m docs
@@ -107,7 +107,7 @@ jobs:
         run: pytest -m "not release and not benchmark and not docs" tests/unit/io/
 
       - name: Check import without optional dependencies
-        if: github.ref_name != 'main' && matrix.python-version == '3.12' && matrix.os == 'ubuntu-latest'
+        if: github.ref_name != 'main' && matrix.python-version == '3.13' && matrix.os == 'ubuntu-latest'
         run: |
           declare -a deps=("pandas"
           "pyarrow"

docs/source/development/contributing/index.md

@@ -99,7 +99,7 @@ rustup toolchain install nightly --component miri
 ```
 
 Next, install Python, for example using [pyenv](https://github.com/pyenv/pyenv#installation). We
-recommend using the latest Python version (`3.12`). Make sure you deactivate any active virtual
+recommend using the latest Python version (`3.13`). Make sure you deactivate any active virtual
 environments (command: `deactivate`) or conda environments (command: `conda deactivate`), as the
 steps below will create a new [virtual environment](https://docs.python.org/3/tutorial/venv.html)
 for Polars. You will need Python even if you intend to work on the Rust code only, as we rely on the

py-polars/pyproject.toml

@@ -26,6 +26,7 @@ classifiers = [
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
+  "Programming Language :: Python :: 3.13",
   "Programming Language :: Rust",
   "Topic :: Scientific/Engineering",
 ]