Stubs for starting our python project (especially CI)

.github/workflows/python-ci.yml

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+on:
+  push:
+    branches: [main]
+  pull_request:
+    paths:
+      - 'python/**'
+defaults:
+  run:
+    working-directory: python/selfie-lib
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - run: pipx install poetry
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version-file: 'python/selfie-lib/pyproject.toml'
+          cache: 'poetry'
+      - run: poetry install
+      - run: poetry run pytest -vv
+      - run: poetry run pyright
+      - run: poetry run ruff check

.gitignore

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 .gradle/
 build/
 bin/
-.DS_Store
+.DS_Store
+__pycache__/

python/.python-version

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+3.12

python/.vscode/settings.json

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+{
+    "python.testing.pytestArgs": [
+        "selfie-lib",
+        "-vv"
+    ],
+    "python.testing.unittestEnabled": false,
+    "python.testing.pytestEnabled": true
+}

python/README.md

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+The python implementation is under construction. It makes use of PEP 695, so you must use Python 3.12 or later.
+
+Dependencies are managed using poetry, which you can install here.
+- https://python-poetry.org/docs/#installing-with-the-official-installer
+- then cd into `selfie-lib` and run `poetry install`
+
+Our CI server runs three checks in the `selfie-lib` directory.
+
+- `poetry run pytest -vv` this runs the tests (`-vv` makes nice output)
+- `poetry run pyright` this does type checking
+- `poetry run ruff check` this checks formatting
+
+For the IDE we use VSCode. Make sure to open the `python` directory, not the parent `selfie`. Receommended VSCode plugins:
+
+- https://marketplace.visualstudio.com/items?itemName=ms-python.python
+- https://marketplace.visualstudio.com/items?itemName=charliermarsh.ruff

python/selfie-lib/pyproject.toml

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+[tool.poetry]
+name = "selfie-lib"
+version = "0.1.0"
+description = "Infrastructure for creating selfie-compatible test runner plugins."
+authors = ["Ned Twigg <[email protected]>"]
+license = "Apache-2.0"
+readme = "../README.md"
+
+[tool.poetry.dependencies]
+python = "^3.12"
+
+[tool.poetry.group.dev.dependencies]
+ruff = "^0.2.1"
+pyright = "^1.1.350"
+pytest = "^8.0.0"
+
+[build-system]
+requires = ["poetry-core"]
+build-backend = "poetry.core.masonry.api"

python/selfie-lib/selfie_lib/__init__.py

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+from .ned import fizzbuzz as fizzbuzz

python/selfie-lib/selfie_lib/ned.py

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+def fizzbuzz(n):
+    fizzbuzz_results = []
+    for i in range(1, n + 1):
+        if i % 3 == 0 and i % 5 == 0:
+            fizzbuzz_results.append("FizzBuzz")
+        elif i % 3 == 0:
+            fizzbuzz_results.append("Fizz")
+        elif i % 5 == 0:
+            fizzbuzz_results.append("Buzz")
+        else:
+            fizzbuzz_results.append(f"{i}")
+    return fizzbuzz_results

python/selfie-lib/tests/ned_test.py

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+from selfie_lib import fizzbuzz
+
+
+def test_fizzbuzz():
+    assert fizzbuzz(15) == [
+        "1",
+        "2",
+        "Fizz",
+        "4",
+        "Buzz",
+        "Fizz",
+        "7",
+        "8",
+        "Fizz",
+        "Buzz",
+        "11",
+        "Fizz",
+        "13",
+        "14",
+        "FizzBuzz",
+    ]