Update Python version support and CI to include Python 3.14

.github/workflows/dist.yaml

@@ -27,7 +27,7 @@ jobs:
     - name: Setup Python
       uses: actions/setup-python@v5
       with:
-        python-version: 3.8
+        python-version: 3.10
     - name: Build dist
       run: |
         pip install build

.github/workflows/docs.yaml

@@ -28,7 +28,7 @@ jobs:
       - name: Setup Python
         uses: actions/setup-python@v5
         with:
-          python-version: 3.8
+          python-version: 3.10
       - name: Install dependencies
         run: |
           pip install -e .[docs,examples]

.github/workflows/test.yml

@@ -1,3 +1,4 @@
+---
 name: Tests
 
 on:
@@ -21,117 +22,125 @@ concurrency:
 
 jobs:
   test:
-    name: (${{ matrix.os }}, Py${{ matrix.python-version }}, sk${{ matrix.scikit-learn }}, sk-only:${{ matrix.sklearn-only }})
+    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: ["3.9"]
-        scikit-learn: ["1.0.*", "1.1.*", "1.2.*", "1.3.*", "1.4.*", "1.5.*"]
-        os: [ubuntu-latest]
-        sklearn-only: ["true"]
         include:
           - os: ubuntu-latest
-            python-version: "3.8"  # no scikit-learn 0.23 release for Python 3.9
-            scikit-learn: "0.23.1"
-            sklearn-only: "true"
-          # scikit-learn 0.24 relies on scipy defaults, so we need to fix the version
-          # c.f. https://github.com/openml/openml-python/pull/1267
+            python-version: "3.10"
+            scikit-learn: "1.0.*"
+            scipy: "1.10.0"
+            sklearn-only: true
           - os: ubuntu-latest
-            python-version: "3.9"
-            scikit-learn: "0.24"
+            python-version: "3.11"
+            scikit-learn: "1.3.*"
             scipy: "1.10.0"
-            sklearn-only: "true"
-          # Do a Windows and Ubuntu test for _all_ openml functionality
-          # I am not sure why these are on 3.8 and older scikit-learn
+            sklearn-only: true
+          - os: ubuntu-latest
+            python-version: "3.12"
+            scikit-learn: "1.5.*"
+            scipy: ">=1.11"
+            sklearn-only: true
+          - os: ubuntu-latest
+            python-version: "3.13"
+            scikit-learn: "1.6.*"
+            scipy: ">=1.10"
+            sklearn-only: true
+          - os: ubuntu-latest
+            python-version: "3.14"
+            scikit-learn: "1.7.*"
+            scipy: ">=1.10"
+            sklearn-only: true
           - os: windows-latest
-            python-version: "3.8"
-            scikit-learn: 0.24.*
-            scipy: "1.10.0"
-            sklearn-only: 'false'
-          # Include a code cov version
+            python-version: "3.10"
+            scikit-learn: "1.5.*"
+            scipy: "1.10.1"
+            sklearn-only: false
+          - os: windows-latest
+            python-version: "3.13"
+            scikit-learn: "1.6.*"
+            scipy: ">=1.10"
+            sklearn-only: false
           - os: ubuntu-latest
-            code-cov: true
-            python-version: "3.8"
-            scikit-learn: 0.23.1
-            sklearn-only: 'false'
-      fail-fast:  false
-
+            code-cov: false
+            python-version: "3.10"
+            scikit-learn: "1.5.*"
+            scipy: ">=1.10"
+            sklearn-only: false
     steps:
-    - uses: actions/checkout@v4
-      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
-      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 }}
-    - 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"
-        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"
-        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: |
-        before="${{ env.BEFORE }}"
-        after="$(git status --porcelain -b)"
-        if [[ "$before" != "$after" ]]; then
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 2
+      - name: Setup Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+          allow-prereleases: true
+      - name: Install test dependencies
+        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 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) }}
+        shell: bash
+        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 }}
+      - 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 }}" = "true" ]; 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"
+         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 [ "${{ matrix.code-cov }}" = "true" ]; then codecov='--cov=openml --long --cov-report=xml'; fi
+         # Most of the time, running only the scikit-learn tests is sufficient
+         if [ "${{ 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"
+         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: |
+         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: |
+         before="${{ env.BEFORE }}"
+         after="$(git status --porcelain -b)"
+         if [[ "$before" != "$after" ]]; then
             echo "git status from before: $before"
             echo "git status from after: $after"
             echo "Not all generated files have been deleted!"
             exit 1
-        fi
-    - name: Upload coverage
-      if: matrix.code-cov && always()
-      uses: codecov/codecov-action@v4
-      with:
-        files: coverage.xml
-        token: ${{ secrets.CODECOV_TOKEN }}
-        fail_ci_if_error: true
-        verbose: true
+         fi
+      - name: Upload coverage
+        if: matrix.code-cov && always()
+        uses: codecov/codecov-action@v4
+        with:
+          files: coverage.xml
+          token: ${{ secrets.CODECOV_TOKEN }}
+          fail_ci_if_error: true
+          verbose: true

.gitignore

@@ -96,4 +96,14 @@ dmypy.sock
 
 # Tests
 .pytest_cache
-.venv
+.venv
+
+# Virtual environments
+oenv/
+venv/
+.env/
+.venv/
+
+# Python cache
+__pycache__/
+*.pyc

README.md

@@ -15,7 +15,7 @@
 ## The Python API for a World of Data and More :dizzy:
 
 [![Latest Release](https://img.shields.io/github/v/release/openml/openml-python)](https://github.com/openml/openml-python/releases)
-[![Python Versions](https://img.shields.io/badge/python-3.8%20%7C%203.9%20%7C%203.10%20%7C%203.11%20%7C%203.12%20%7C%203.13-blue)](https://pypi.org/project/openml/)
+[![Python Versions](https://img.shields.io/badge/python-3.10%20%7C%203.11%20%7C%203.12%20%7C%203.13%20%7C%203.14-blue)](https://pypi.org/project/openml/)
 [![Downloads](https://static.pepy.tech/badge/openml)](https://pepy.tech/project/openml)
 [![License](https://img.shields.io/badge/License-BSD%203--Clause-blue.svg)](https://opensource.org/licenses/BSD-3-Clause)
 <!-- Add green badges for CI and precommit -->
@@ -60,7 +60,7 @@ for task_id in suite.tasks:
 
 ## :magic_wand: Installation
 
-OpenML-Python is supported on Python 3.8 - 3.13 and is available on Linux, MacOS, and Windows.
+OpenML-Python is supported on Python 3.10 - 3.14 and is available on Linux, MacOS, and Windows.
 
 You can install OpenML-Python with:
 

pyproject.toml

@@ -21,7 +21,7 @@ dependencies = [
   "pyarrow",
   "tqdm",  # For MinIO download progress bars
 ]
-requires-python = ">=3.8"
+requires-python = ">=3.10,<3.15"    
 maintainers = [
   { name = "Pieter Gijsbers", email="p.gijsbers@tue.nl"},
   { name = "Lennart Purucker"},
@@ -49,13 +49,11 @@ classifiers = [
   "Operating System :: POSIX",
   "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 :: 3.10", 
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: 3.13",
+  "Programming Language :: Python :: 3.14",
 ]
 license = { file = "LICENSE" }