Merge pull request optuna#5018 from not522/python3.12

Support Python 3.12 on tests for core modules

.github/workflows/tests.yml

@@ -20,7 +20,7 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11']
+        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12']
 
     services:
       redis:
@@ -74,16 +74,23 @@ jobs:
         pip install pipdeptree
         pipdeptree
 
-    - name: Scheduled tests
-      if:  ${{ github.event_name == 'schedule' || github.event_name == 'workflow_dispatch' }}
-      run: |
-        pytest tests -m "not integration"
-      env:
-        SQLALCHEMY_WARN_20: 1
-
     - name: Tests
-      if:  ${{ github.event_name != 'schedule' && github.event_name != 'workflow_dispatch' }}
       run: |
-        pytest tests -m "not integration and not slow"
+        if [ "${{ github.event_name }}" = "schedule" ] || \
+           [ "${{ github.event_name }}" = "workflow_dispatch" ] ; then
+          target="not integration"
+        else
+          target="not integration and not slow"
+        fi
+
+        if [ "${{ matrix.python-version }}" = "3.12" ] ; then
+          # TODO(not522): Remove ignores when BoTorch supports Python 3.12
+          ignore_option="--ignore tests/terminator_tests/ \
+          --ignore tests/visualization_tests/test_terminator_improvement.py"
+        else
+          ignore_option=""
+        fi
+
+        pytest tests -m "$target" $ignore_option
       env:
         SQLALCHEMY_WARN_20: 1

README.md

@@ -2,7 +2,7 @@
 
 # Optuna: A hyperparameter optimization framework
 
-[![Python](https://img.shields.io/badge/python-3.7%20%7C%203.8%20%7C%203.9%20%7C%203.10%20%7C%203.11-blue)](https://www.python.org)
+[![Python](https://img.shields.io/badge/python-3.7%20%7C%203.8%20%7C%203.9%20%7C%203.10%20%7C%203.11%20%7C%203.12-blue)](https://www.python.org)
 [![pypi](https://img.shields.io/pypi/v/optuna.svg)](https://pypi.python.org/pypi/optuna)
 [![conda](https://img.shields.io/conda/vn/conda-forge/optuna.svg)](https://anaconda.org/conda-forge/optuna)
 [![GitHub license](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/optuna/optuna)

pyproject.toml

@@ -21,6 +21,7 @@ classifiers = [
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3 :: Only",
     "Topic :: Scientific/Engineering",
     "Topic :: Scientific/Engineering :: Mathematics",
@@ -110,7 +111,7 @@ integration = [
 ]
 optional = [
     "boto3",  # optuna/artifacts/_boto3.py.
-    "botorch",  # optuna/terminator/gp/botorch.
+    "botorch; python_version<='3.11'",  # optuna/terminator/gp/botorch.
     "cmaes>=0.10.0",  # optuna/samplers/_cmaes.py.
     "google-cloud-storage",  # optuna/artifacts/_gcs.py.
     "matplotlib!=3.6.0",  # optuna/visualization/matplotlib.

tests/integration_tests/test_botorch.py

@@ -5,7 +5,6 @@
 from unittest.mock import patch
 import warnings
 
-import botorch
 from packaging import version
 import pytest
 
@@ -22,6 +21,7 @@
 
 
 with try_import() as _imports:
+    import botorch
     import torch
 
 if not _imports.is_successful():