python-project-development
Builds and refactors production-ready Python CLI tools and packages with modern pyproject layouts, uv workflows, and robust testing.
What this skill does
# Python Project Development (Lean) ## Use this skill when - creating Python CLIs or packages - setting up `pyproject.toml` - preparing build/publish workflows - tightening packaging, linting, and test gates ## Defaults - Prefer `uv` for dependency and run workflows. - Keep package layout `src/<package_name>/`. - Use typed function signatures and explicit exit codes. - Treat `ruff` + tests as baseline quality gates. ## Core workflow 1. Choose project type: CLI, library, or hybrid. 2. Scaffold minimal `pyproject.toml` and package layout. 3. Implement entry point and core module. 4. Add tests and lint config. 5. Validate build/install locally. ## Minimal commands ```bash # Install project deps uv sync # Lint and format uv run ruff check . uv run ruff format . # Test uv run pytest # Build artifacts uv run python -m build ``` ## Constraints - No hardcoded secrets/paths. - Avoid heavy dependencies without clear payoff. - Keep packaging metadata accurate and minimal. ## References - [references/reference.md](./references/reference.md) - [references/examples.md](./references/examples.md) - [references/patterns.md](./references/patterns.md) - [references/stdlib_perf.md](./references/stdlib_perf.md)
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