Python Code Quality
Quick Commands
All commands run from the python/ directory:
bash
# Format code (ruff format, parallel across packages) uv run poe fmt # Lint and auto-fix (ruff check, parallel across packages) uv run poe lint # Type checking uv run poe pyright # Pyright (parallel across packages) uv run poe mypy # MyPy (parallel across packages) uv run poe typing # Both pyright and mypy # All package-level checks in parallel (fmt + lint + pyright + mypy) uv run poe check-packages # Full check (packages + samples + tests + markdown) uv run poe check # Samples only uv run poe samples-lint # Ruff lint on samples/ uv run poe samples-syntax # Pyright syntax check on samples/ # Markdown code blocks uv run poe markdown-code-lint
Pre-commit Hooks (prek)
Prek hooks run automatically on commit. They check only changed files and run package-level checks in parallel for affected packages only.
bash
# Install hooks uv run poe prek-install # Run all hooks manually uv run prek run -a # Run on last commit uv run prek run --last-commit
When core package changes, type-checking (mypy, pyright) runs across all packages since type changes propagate. Format and lint only run in changed packages.
Ruff Configuration
- •Line length: 120
- •Target: Python 3.10+
- •Auto-fix enabled
- •Rules: ASYNC, B, CPY, D, E, ERA, F, FIX, I, INP, ISC, Q, RET, RSE, RUF, SIM, T20, TD, W, T100, S
- •Scripts directory is excluded from checks
Pyright Configuration
- •Strict mode enabled
- •Excludes: tests, .venv, packages/devui/frontend
Parallel Execution
The task runner (scripts/task_runner.py) executes the cross-product of
(package × task) in parallel using ThreadPoolExecutor. Single items run
in-process with streaming output.
CI Workflow
CI splits into 4 parallel jobs:
- •Pre-commit hooks — lightweight hooks (SKIP=poe-check)
- •Package checks — fmt/lint/pyright via check-packages
- •Samples & markdown — samples-lint, samples-syntax, markdown-code-lint
- •Mypy — change-detected mypy checks