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Add test infra for Python 3.14
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‎.github/workflows/release.yaml‎

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@@ -20,7 +20,7 @@ jobs:
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sdist: ${{ steps.package.outputs.sdist }}
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wheel: ${{ steps.package.outputs.wheel }}
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container:
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image: danielflook/python-minifier-build:python3.13-2024-09-15
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image: danielflook/python-minifier-build:python3.14-2025-08-13
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permissions:
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contents: read
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steps:
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outputs:
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wheel: ${{ steps.package.outputs.wheel }}
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container:
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image: danielflook/python-minifier-build:python2.7-2024-09-15
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image: danielflook/python-minifier-build:python2.7-2025-08-13
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steps:
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- name: Download source distribution artifact
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uses: actions/[email protected]
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runs-on: ubuntu-24.04
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needs: [package_python3]
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container:
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image: danielflook/python-minifier-build:python3.13-2024-09-15
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image: danielflook/python-minifier-build:python3.14-2025-08-13
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permissions:
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contents: read
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steps:

‎.github/workflows/release_test.yaml‎

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sdist: ${{ steps.package.outputs.sdist }}
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wheel: ${{ steps.package.outputs.wheel }}
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container:
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image: danielflook/python-minifier-build:python3.13-2024-09-15
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image: danielflook/python-minifier-build:python3.14-2025-08-13
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steps:
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- name: Checkout
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uses: actions/[email protected]
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outputs:
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wheel: ${{ steps.package.outputs.wheel }}
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container:
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image: danielflook/python-minifier-build:python2.7-2024-09-15
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image: danielflook/python-minifier-build:python2.7-2025-08-13
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steps:
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- name: Download source distribution artifact
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uses: actions/[email protected]
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runs-on: ubuntu-24.04
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needs: [package_python3]
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container:
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image: danielflook/python-minifier-build:python3.13-2024-09-15
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image: danielflook/python-minifier-build:python3.14-2025-08-13
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steps:
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- uses: actions/[email protected]
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with:
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strategy:
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fail-fast: false
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matrix:
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python: ["2.7", "3.3", "3.4", "3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
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python: ["2.7", "3.3", "3.4", "3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
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package_type: [sdist, wheel]
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steps:
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- name: Checkout
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- name: Test
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uses: ./.github/actions/run-in-container
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with:
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image: danielflook/python-minifier-build:python${{ matrix.python }}-2024-09-15
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image: danielflook/python-minifier-build:python${{ matrix.python }}-2025-08-13
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run: |
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if [[ "${{ matrix.package_type }}" == "sdist" ]]; then
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pip${{ matrix.python }} install dist/${{needs.package_python3.outputs.sdist}}
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matrix:
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package_type: [sdist, wheel]
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container:
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image: danielflook/python-minifier-build:python3.13-2024-09-15
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image: danielflook/python-minifier-build:python3.14-2025-08-13
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steps:
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- name: Download distribution artifacts
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uses: actions/[email protected]

‎.github/workflows/test.yaml‎

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strategy:
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fail-fast: false
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matrix:
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python: ["python2.7", "python3.3", "python3.4", "python3.5", "python3.6", "python3.7", "python3.8", "python3.9", "python3.10", "python3.11", "python3.12", "python3.13", "pypy", "pypy3"]
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python: ["python2.7", "python3.3", "python3.4", "python3.5", "python3.6", "python3.7", "python3.8", "python3.9", "python3.10", "python3.11", "python3.12", "python3.13", "python3.14", "pypy", "pypy3"]
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steps:
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- name: Checkout
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uses: actions/[email protected]
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- name: Run tests
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uses: ./.github/actions/run-in-container
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with:
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image: danielflook/python-minifier-build:${{ matrix.python }}-2024-09-15
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image: danielflook/python-minifier-build:${{ matrix.python }}-2025-08-13
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run: |
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tox -r -e $(echo "${{ matrix.python }}" | tr -d .)
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strategy:
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fail-fast: false
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matrix:
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python-version: ['2.7', '3.6', '3.7', '3.8', '3.9', '3.10', '3.11', '3.12', '3.13']
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python-version: ['2.7', '3.6', '3.7', '3.8', '3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
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steps:
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- name: Checkout
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uses: actions/[email protected]
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- Dockerfile-fedora36
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- Dockerfile-fedora38
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- Dockerfile-fedora40
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- Dockerfile-fedora42
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- Dockerfile-fuzz
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steps:
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- name: Checkout

‎.github/workflows/test_corpus.yaml‎

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strategy:
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fail-fast: false
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matrix:
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python: ["2.7", "3.3", "3.4", "3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
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python: ["2.7", "3.3", "3.4", "3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
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ref: ["${{ inputs.ref }}", "${{ inputs.base-ref }}"]
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steps:
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- name: Clear workspace
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- name: Run tests
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uses: dflook/run-in-container@main
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with:
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image: danielflook/python-minifier-build:python${{ matrix.python }}-2024-09-15
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image: danielflook/python-minifier-build:python${{ matrix.python }}-2025-08-13
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volumes: |
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/corpus:/corpus
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/corpus-results:/corpus-results
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- name: Generate Report
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uses: dflook/run-in-container@main
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with:
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image: danielflook/python-minifier-build:python3.13-2024-09-15
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image: danielflook/python-minifier-build:python3.14-2025-08-13
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volumes: |
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/corpus-results:/corpus-results
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run: |

‎.github/workflows/verify_release.yaml‎

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runs-on: ubuntu-24.04
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strategy:
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matrix:
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python: ["2.7", "3.3", "3.4", "3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
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python: ["2.7", "3.3", "3.4", "3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
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container:
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image: danielflook/python-minifier-build:python${{ matrix.python }}-2024-09-15
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image: danielflook/python-minifier-build:python${{ matrix.python }}-2025-08-13
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steps:
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- name: Test
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env:

‎.github/workflows/xtest.yaml‎

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strategy:
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fail-fast: false
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matrix:
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python: ["python2.7", "python3.3", "python3.4", "python3.5", "python3.6", "python3.7", "python3.8", "python3.9", "python3.10", "python3.11", "python3.12", "python3.13", "pypy3"]
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python: ["python2.7", "python3.3", "python3.4", "python3.5", "python3.6", "python3.7", "python3.8", "python3.9", "python3.10", "python3.11", "python3.12", "python3.13", "python3.14", "pypy3"]
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steps:
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- name: Clear workspace
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run: rm -rf "${GITHUB_WORKSPACE:?}/*"
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- name: Run tests
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uses: ./.github/actions/run-in-container
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with:
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image: danielflook/python-minifier-build:${{ matrix.python }}-2024-09-15
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image: danielflook/python-minifier-build:${{ matrix.python }}-2025-08-13
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run: |
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if [[ "${{ matrix.python }}" == "python3.4" ]]; then

‎CHANGELOG.md‎

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This means that if you minify code written for Python 3.11 using python-minifier running with Python 3.12,
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the minified code may only run with Python 3.12.
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## [Unreleased] - Work in Progress
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### Added
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- Python 3.14 support (work in progress), including:
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+ PEP 750 Template strings (t-strings)
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+ Exception handling without parentheses
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+ PEP 649 Deferred annotation evaluation
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## [3.0.0] - 2025-08-13
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### Fixed

‎README.md‎

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[Try it out!](https://python-minifier.com)
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python-minifier currently supports Python 2.7 and Python 3.3 to 3.13. Previous releases supported Python 2.6.
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python-minifier currently supports Python 2.7 and Python 3.3 to 3.14. Previous releases supported Python 2.6.
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* [PyPI](https://pypi.org/project/python-minifier/)
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* [Documentation](https://dflook.github.io/python-minifier/)

‎docker/Dockerfile-fedora30‎

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@@ -79,7 +79,7 @@ FROM base AS python3.8
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RUN <<EOF
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dnf install -y python38
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dnf clean all && rm -rf /var/cache/dnf/*
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curl https://bootstrap.pypa.io/get-pip.py | python3.8
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curl https://bootstrap.pypa.io/pip/3.8/get-pip.py | python3.8
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EOF
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##

‎docker/Dockerfile-fedora42‎

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FROM fedora:42 AS python3.14
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SHELL ["/bin/bash", "-o", "pipefail", "-c"]
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# CircleCI required tools
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RUN <<EOF
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dnf install -y \
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git \
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tar \
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gzip \
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gpg \
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ca-certificates
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dnf clean all && rm -rf /var/cache/dnf/*
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EOF
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# Development tools
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RUN <<EOF
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dnf install -y \
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@development-tools \
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findutils \
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zlib-devel \
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bzip2-devel \
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ncurses-devel \
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gdbm-devel \
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openssl-devel \
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sqlite-devel \
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tk-devel \
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libuuid-devel \
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readline-devel \
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libnsl2-devel \
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xz-devel \
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libffi-devel \
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wget
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git clone https://github.com/python/cpython.git
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cd cpython
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git checkout v3.14.0rc1
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./configure
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make
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make install
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cd ..
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rm -rf cpython
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dnf clean all && rm -rf /var/cache/dnf/*
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EOF
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# Other packages required for tests
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RUN <<EOF
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dnf install -y bzip2
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dnf clean all && rm -rf /var/cache/dnf/*
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EOF
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RUN pip3 install --no-cache-dir tox==4.28.4
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WORKDIR /tmp/work
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ENTRYPOINT ["/bin/bash"]

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