Testing against Python 3.11 preview using GitHub Actions#

I decided to run my CI tests against the Python 3.11 preview, to avoid the problem I had when Python 3.10 came out with a bug that affected Datasette.

I used the new GitHub Code Search to figure out how to do this. I searched for:

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3.11 path:workflows/*.yml

And found this example from urllib3 which showed that the version tag to use is:

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3.11-dev

Update 28th Noveber 2022: 3.12-dev now works for Python 3.12 preview

I added that to my test matrix like so:

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jobs:
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  test:
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    runs-on: ubuntu-latest
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    strategy:
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      matrix:
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        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11-dev"]
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    steps:
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    - uses: actions/checkout@v2
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    - name: Set up Python ${{ matrix.python-version }}
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      uses: actions/setup-python@v2
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      with:
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        python-version: ${{ matrix.python-version }}
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    # ...

Here’s the full workflow.