python-conventionslisted
Install: claude install-skill swell-agents/coding-skills
## Default Stack
If the repo doesn't define its own tooling, use:
- **UV** — dependency management, builds, running scripts
- **GitHub Actions** — CI/CD
- **Ruff** — linting and formatting, with these rule sets:
- `E` (pycodestyle errors), `F` (pyflakes), `I` (isort), `UP` (pyupgrade)
- `B` (flake8-bugbear), `SIM` (flake8-simplify), `PTH` (pathlib)
- `PIE` (flake8-pie), `RUF` (ruff-specific), `T201` (no print)
- `PLC0415` (import-outside-toplevel)
- **mypy** — strict mode (`strict = true`, `warn_return_any = true`, `warn_unused_configs = true`)
- **pytest** — testing (`pytest-cov`, `pytest-asyncio`)
- **vulture** — dead code detection
- **pip-audit** — dependency security audit
## Scratch Testing
**ALWAYS use `test.py`** in project root for:
- Ad-hoc testing, API calls, data exploration
- Any Python code that isn't a formal test or production code
- **NEVER use inline Python heredocs via Bash** (`uv run python3 << 'EOF'`)
Write code to `test.py`, then run with `uv run python test.py`. Comment out previous code — keeps history. Gitignored — never commit.