Support python 3.12 in the CIs #1091

	name: dask_ml

	on:
	schedule:
	- cron: '0 15 * * *'
	pull_request:
	paths:
	- 'dask_ml/**'
	- '.github/workflows/dask_ml.yml'

	jobs:
	examples:
	if: (github.event_name == 'schedule' && github.repository == 'optuna/optuna-examples') \|\| (github.event_name != 'schedule')
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12']

	steps:
	- uses: actions/checkout@v3
	- name: setup-python${{ matrix.python-version }}
	uses: actions/setup-python@v4
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install (Python)
	run: \|
	python -m pip install --upgrade pip
	pip install --progress-bar off -U setuptools
	pip install git+https://github.com/optuna/optuna.git
	python -c 'import optuna'

	# TODO(nabenabe0928/2024/03/12): Remove this version constraint once the following PR is merged.
	# https://github.com/dask/distributed/pull/8575
	# NOTE(nabenabe0928): dask-expr supports only python>=3.9.
	pip install "dask[dataframe]<2024.3.0"
	pip install -r dask_ml/requirements.txt
	- name: Run examples
	run: \|
	python dask_ml/dask_ml_simple.py
	env:
	OMP_NUM_THREADS: 1

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