python-lint

Purpose

Configure Ruff as the single linter and formatter for a Python package — replacing Black, Flake8 (+ plugins), isort, and pyupgrade — with an explicit rule set in pyproject.toml, then drive ruff check and ruff format --check to a clean exit. Covers fresh setup, migration from the legacy stack, rule tuning, and fixing lint or format failures. Every command below runs in the user's package repository.

When NOT to use