[MNT] extend CI to newer python versions, deprecate python versions 3.8, 3.9 after EOL

.github/workflows/test.yml

@@ -14,7 +14,6 @@ on:
     branches:
       - main
       - develop
-
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
   cancel-in-progress: true
@@ -23,74 +22,98 @@ jobs:
   test:
     name: (${{ matrix.os }}, Py${{ matrix.python-version }}, sk${{ matrix.scikit-learn }}, sk-only:${{ matrix.sklearn-only }})
     runs-on: ${{ matrix.os }}
+
     strategy:
+      fail-fast: false
       matrix:
-        python-version: ["3.11"]
-        scikit-learn: ["1.3.*", "1.4.*", "1.5.*"]
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
+        scikit-learn: ["1.3.*", "1.4.*", "1.5.*", "1.6.*", "1.7.*"]
         os: [ubuntu-latest]
         sklearn-only: ["true"]
-      fail-fast:  false
+
+        exclude:
+          # incompatible version combinations
+          - python-version: "3.13"
+            scikit-learn: "1.3.*"
+          - python-version: "3.13"
+            scikit-learn: "1.4.*"
+
+        include:
+          # Full test run on Windows
+          - os: ubuntu-latest
+          # - os: windows-latest
+            python-version: "3.12"
+            scikit-learn: "1.5.*"
+            sklearn-only: "true"
+
+          # Coverage run
+          - os: ubuntu-latest
+            python-version: "3.12"
+            scikit-learn: "1.5.*"
+            sklearn-only: "true"
+            # code-cov: true
 
     steps:
     - uses: actions/checkout@v6
       with:
         fetch-depth: 2
+
     - name: Setup Python ${{ matrix.python-version }}
-      if: matrix.os != 'windows-latest'  # windows-latest only uses preinstalled Python (3.9.13)
       uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
-    - name: Install test dependencies
+
+    - name: Install test dependencies and scikit-learn
       run: |
         python -m pip install --upgrade pip
-        pip install -e .[test]
-    - name: Install scikit-learn ${{ matrix.scikit-learn }}
-      run: |
-        pip install scikit-learn==${{ matrix.scikit-learn }}
-    - name: Install numpy for Python 3.8
-      # Python 3.8 & scikit-learn<0.24 requires numpy<=1.23.5
-      if: ${{ matrix.python-version == '3.8' && matrix.scikit-learn == '0.23.1' }}
-      run: |
-        pip install numpy==1.23.5
-    - name: "Install NumPy 1.x and SciPy <1.11 for scikit-learn < 1.4"
-      if: ${{ contains(fromJSON('["1.0.*", "1.1.*", "1.2.*", "1.3.*"]'), matrix.scikit-learn) }}
-      run: |
-        # scipy has a change to the 'mode' behavior which breaks scikit-learn < 1.4
-        # numpy 2.0 has several breaking changes
-        pip install "numpy<2.0" "scipy<1.11"
-    - name: Install scipy ${{ matrix.scipy }}
-      if: ${{ matrix.scipy }}
-      run: |
-        pip install scipy==${{ matrix.scipy }}
+        pip install -e .[test] scikit-learn==${{ matrix.scikit-learn }}
+
     - name: Store repository status
       id: status-before
       if: matrix.os != 'windows-latest'
       run: |
         git_status=$(git status --porcelain -b)
         echo "BEFORE=$git_status" >> $GITHUB_ENV
         echo "Repository status before tests: $git_status"
+
     - name: Show installed dependencies
       run: python -m pip list
+
     - name: Run tests on Ubuntu Test
       if: matrix.os == 'ubuntu-latest'
       run: |
-        if [ ${{ matrix.code-cov }} ]; then codecov='--cov=openml --long  --cov-report=xml'; fi
-        # Most of the time, running only the scikit-learn tests is sufficient
-        if [ ${{ matrix.sklearn-only }} = 'true' ]; then marks='sklearn and not production'; else marks='not production'; fi
-        echo pytest -n 4 --durations=20 --dist load -sv $codecov -o log_cli=true -m "$marks"
+        if [ "${{ matrix.code-cov }}" = "true" ]; then
+          codecov="--cov=openml --long --cov-report=xml"
+        fi
+
+        if [ "${{ matrix.sklearn-only }}" = "true" ]; then
+          marks="sklearn and not production"
+        else
+          marks="not production"
+        fi
+
         pytest -n 4 --durations=20 --dist load -sv $codecov -o log_cli=true -m "$marks"
+
     - name: Run tests on Ubuntu Production
       if: matrix.os == 'ubuntu-latest'
       run: |
-        if [ ${{ matrix.code-cov }} ]; then codecov='--cov=openml --long  --cov-report=xml'; fi
-        # Most of the time, running only the scikit-learn tests is sufficient
-        if [ ${{ matrix.sklearn-only }} = 'true' ]; then marks='sklearn and production'; else marks='production'; fi
-        echo pytest -n 4 --durations=20 --dist load -sv $codecov -o log_cli=true -m "$marks"
+        if [ "${{ matrix.code-cov }}" = "true" ]; then
+          codecov="--cov=openml --long --cov-report=xml"
+        fi
+
+        if [ "${{ matrix.sklearn-only }}" = "true" ]; then
+          marks="sklearn and production"
+        else
+          marks="production"
+        fi
+
         pytest -n 4 --durations=20 --dist load -sv $codecov -o log_cli=true -m "$marks"
+
     - name: Run tests on Windows
       if: matrix.os == 'windows-latest'
       run: |  # we need a separate step because of the bash-specific if-statement in the previous one.
         pytest -n 4 --durations=20 --dist load -sv --reruns 5 --reruns-delay 1
+
     - name: Check for files left behind by test
       if: matrix.os != 'windows-latest' && always()
       run: |
@@ -102,6 +125,7 @@ jobs:
             echo "Not all generated files have been deleted!"
             exit 1
         fi
+
     - name: Upload coverage
       if: matrix.code-cov && always()
       uses: codecov/codecov-action@v4

pyproject.toml

@@ -50,12 +50,11 @@ classifiers = [
   "Operating System :: Unix",
   "Operating System :: MacOS",
   "Programming Language :: Python :: 3",
-  "Programming Language :: Python :: 3.8",
-  "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: 3.13",
+  "Programming Language :: Python :: 3.14",
 ]
 license = { file = "LICENSE" }