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ci: Add Python 3.14b03 to the test matrix #30204

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4b9c146
Add Python 3.14b03 to the test matrix
jkseppan Jun 21, 2025
ef09f4e
Skip interactive backends in 3.14 tests
jkseppan Jul 2, 2025
8a1cc93
Try setting stdin=DEVNULL in subprocess.run
jkseppan Jul 2, 2025
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30 changes: 25 additions & 5 deletions .github/workflows/tests.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -42,6 +42,7 @@ jobs:
contents: read
name: "Python ${{ matrix.python-version }} on ${{ matrix.os }} ${{ matrix.name-suffix }}"
runs-on: ${{ matrix.os }}
continue-on-error: ${{ contains(matrix.name-suffix, 'pre-release') }}

strategy:
fail-fast: false
Expand Down Expand Up @@ -75,6 +76,7 @@ jobs:
python-version: '3.13t'
# https://github.com/matplotlib/matplotlib/issues/29844
pygobject-ver: '<3.52.0'
skip-interactive-backend-builds: true
- os: ubuntu-24.04
python-version: '3.12'
- os: macos-13 # This runner is on Intel chips.
Expand All @@ -88,6 +90,10 @@ jobs:
python-version: '3.13'
# https://github.com/matplotlib/matplotlib/issues/29732
pygobject-ver: '<3.52.0'
- name-suffix: "(Python pre-release)"
os: ubuntu-24.04
python-version: '3.14-dev'
skip-interactive-backend-builds: true

steps:
- uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
Expand Down Expand Up @@ -226,6 +232,12 @@ jobs:
PRE="--pre"
fi

# On pre-release builds, use nightly wheels
if ${{ contains(matrix.name-suffix, 'pre-release') }}; then
PRE="--pre --extra-index-url https://pypi.anaconda.org/scientific-python-nightly-wheels/simple"
PRE+=" --prefer-binary"
fi

# Install dependencies from PyPI.
# Preinstall build requirements to enable no-build-isolation builds.
python -m pip install --upgrade $PRE \
Expand All @@ -239,7 +251,7 @@ jobs:
# Sphinx is needed to run sphinxext tests
python -m pip install --upgrade sphinx!=6.1.2

if [[ "${{ matrix.python-version }}" != '3.13t' ]]; then
if [[ "${{ matrix.skip-interactive-backend-builds }}" != "true" ]]; then
# GUI toolkits are pip-installable only for some versions of Python
# so don't fail if we can't install them. Make it easier to check
# whether the install was successful by trying to import the toolkit
Expand All @@ -265,8 +277,10 @@ jobs:
# Even though PySide2 wheels can be installed on Python 3.12+, they are broken and since PySide2 is
# deprecated, they are unlikely to be fixed. For the same deprecation reason, there are no wheels
# on M1 macOS, so don't bother there either.
if [[ "${{ matrix.os }}" != 'macos-14'
&& "${{ matrix.python-version }}" != '3.12' && "${{ matrix.python-version }}" != '3.13' ]]; then
version_atmost() {
printf "%s\n" "$1" "$2" | sort --version-sort --check=silent
}
if [[ "${{ matrix.os }}" != 'macos-14' ]] && version_atmost "${{ matrix.python-version }}" 3.11.999; then
python -mpip install --upgrade pyside2 &&
python -c 'import PySide2.QtCore' &&
echo 'PySide2 is available' ||
Expand All @@ -288,7 +302,7 @@ jobs:
echo 'wxPython is available' ||
echo 'wxPython is not available'

fi # Skip backends on Python 3.13t.
fi # skip-interactive-backend-builds

- name: Install the nightly dependencies
# Only install the nightly dependencies during the scheduled event
Expand Down Expand Up @@ -333,11 +347,17 @@ jobs:
if: matrix.delete-font-cache

- name: Run pytest
timeout-minutes: 90
run: |
if [[ "${{ matrix.python-version }}" == '3.13t' ]]; then
export PYTHON_GIL=0
fi
pytest -rfEsXR -n auto \
if "${{ contains(matrix.name-suffix, 'pre-release') }}"; then
FLAGS=(-k 'not test_backends_interactive')
else
FLAGS=()
fi
pytest -rfEsXR -n auto "${FLAGS[@]}" \
--maxfail=50 --timeout=300 --durations=25 \
--cov-report=xml --cov=lib --log-level=DEBUG --color=yes

Expand Down
2 changes: 1 addition & 1 deletion lib/matplotlib/testing/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -96,7 +96,7 @@ def subprocess_run_for_testing(command, env=None, timeout=60, stdout=None,
proc = subprocess.run(
command, env=env,
timeout=timeout, check=check,
stdout=stdout, stderr=stderr,
stdout=stdout, stderr=stderr, stdin=subprocess.DEVNULL,
text=text
)
except BlockingIOError:
Expand Down
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