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	Update docs to v4 version
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								README.md
									
									
									
									
									
								
							
							
						
						
									
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								README.md
									
									
									
									
									
								
							@ -1,4 +1,4 @@
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# setup-python V3
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# setup-python V4
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<p align="left">
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  <a href="https://github.com/actions/setup-python"><img alt="GitHub Actions status" src="https://github.com/actions/setup-python/workflows/Main%20workflow/badge.svg"></a>
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@ -20,6 +20,7 @@ This action sets up a Python environment for use in actions by:
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- Support for pre-release versions of Python.
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- Support for installing any version of PyPy on-flight
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- Support for built-in caching of pip, pipenv and poetry dependencies
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- Support for `.python-version` file
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# Usage
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@ -29,13 +30,23 @@ Basic:
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```yaml
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steps:
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- uses: actions/checkout@v3
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- uses: actions/setup-python@v3
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- uses: actions/setup-python@v4
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  with:
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    python-version: '3.x' # Version range or exact version of a Python version to use, using SemVer's version range syntax
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    architecture: 'x64' # optional x64 or x86. Defaults to x64 if not specified
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- run: python my_script.py
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```
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Read Python version from file:
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```yaml
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steps:
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- uses: actions/checkout@v3
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- uses: actions/setup-python@v4
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  with:
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    python-version-file: '.python-version' # Read python version from a file
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- run: python my_script.py
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```
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Matrix Testing:
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```yaml
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jobs:
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@ -48,7 +59,7 @@ jobs:
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    steps:
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      - uses: actions/checkout@v3
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      - name: Set up Python
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        uses: actions/setup-python@v3
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        uses: actions/setup-python@v4
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        with:
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          python-version: ${{ matrix.python-version }}
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          architecture: x64
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@ -72,7 +83,7 @@ jobs:
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    steps:
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      - uses: actions/checkout@v3
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      - name: Set up Python
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        uses: actions/setup-python@v3
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        uses: actions/setup-python@v4
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        with:
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          python-version: ${{ matrix.python-version }}
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      - name: Display Python version
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@ -90,7 +101,7 @@ jobs:
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        python-version: ['3.7.4', '3.8', '3.9', '3.10']
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    steps:
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    - uses: actions/checkout@v3
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    - uses: actions/setup-python@v3
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    - uses: actions/setup-python@v4
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      with:
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        python-version: ${{ matrix.python-version }}
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    - run: python my_script.py
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@ -100,7 +111,7 @@ Download and set up an accurate pre-release version of Python:
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```yaml
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steps:
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- uses: actions/checkout@v3
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- uses: actions/setup-python@v3
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- uses: actions/setup-python@v4
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  with:
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    python-version: '3.11.0-alpha.1'
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- run: python my_script.py
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@ -110,7 +121,7 @@ Download and set up the latest available version of Python (includes both pre-re
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```yaml
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steps:
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- uses: actions/checkout@v3
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- uses: actions/setup-python@v3
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- uses: actions/setup-python@v4
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  with:
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    python-version: '3.11.0-alpha - 3.11.0' # SemVer's version range syntax
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- run: python my_script.py
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@ -130,7 +141,7 @@ jobs:
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        - 'pypy3.8' # the latest available version of PyPy that supports Python 3.8
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    steps:
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    - uses: actions/checkout@v3
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    - uses: actions/setup-python@v3
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    - uses: actions/setup-python@v4
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      with:
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        python-version: ${{ matrix.python-version }}
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    - run: python my_script.py
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@ -144,7 +155,7 @@ jobs:
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    runs-on: ubuntu-latest
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    steps:
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    - uses: actions/checkout@v3
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    - uses: actions/setup-python@v3
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    - uses: actions/setup-python@v4
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      id: cp310
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      with:
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        python-version: "3.10"
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@ -245,7 +256,7 @@ The requirements file format allows to specify dependency versions using logical
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```yaml
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steps:
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- uses: actions/checkout@v3
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- uses: actions/setup-python@v3
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- uses: actions/setup-python@v4
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  with:
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    python-version: '3.9'
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    cache: 'pip'
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@ -258,7 +269,7 @@ steps:
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- uses: actions/checkout@v3
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- name: Install pipenv
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  run: pipx install pipenv
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- uses: actions/setup-python@v3
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- uses: actions/setup-python@v4
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  with:
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    python-version: '3.9'
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    cache: 'pipenv'
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@ -271,7 +282,7 @@ steps:
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- uses: actions/checkout@v3
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- name: Install poetry
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  run: pipx install poetry
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- uses: actions/setup-python@v3
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- uses: actions/setup-python@v4
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  with:
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    python-version: '3.9'
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    cache: 'poetry'
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@ -283,7 +294,7 @@ steps:
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```yaml
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steps:
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- uses: actions/checkout@v3
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- uses: actions/setup-python@v3
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- uses: actions/setup-python@v4
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  with:
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    python-version: '3.9'
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    cache: 'pip'
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@ -297,7 +308,7 @@ steps:
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- uses: actions/checkout@v3
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- name: Install pipenv
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  run: pipx install pipenv
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- uses: actions/setup-python@v3
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- uses: actions/setup-python@v4
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  with:
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    python-version: '3.9'
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    cache: 'pipenv'
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@ -45,8 +45,8 @@ We won't pursue the goal to provide wide customization of caching in the scope o
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```
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steps:
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- uses: actions/checkout@v2
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- uses: actions/setup-python@v2
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- uses: actions/checkout@v3
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- uses: actions/setup-python@v4
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  with:
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    python-version: 3.9
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    cache: pip
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@ -56,8 +56,8 @@ steps:
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```
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steps:
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- uses: actions/checkout@v2
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- uses: actions/setup-python@v2
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- uses: actions/checkout@v3
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- uses: actions/setup-python@v4
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  with:
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    python-version: 3.9
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    cache: pipenv
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@ -66,8 +66,8 @@ steps:
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```
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steps:
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- uses: actions/checkout@v2
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- uses: actions/setup-python@v2
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- uses: actions/checkout@v3
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- uses: actions/setup-python@v4
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  with:
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    python-version: 3.9
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    cache: pip
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@ -80,8 +80,8 @@ steps:
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```
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steps:
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- uses: actions/checkout@v2
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- uses: actions/setup-python@v2
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- uses: actions/checkout@v3
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- uses: actions/setup-python@v4
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  with:
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    python-version: 3.9
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    cache: pip
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