Ruff Advanced Configuration & Best Practices in 2026 — Ruff is not just fast — with proper configuration it becomes a complete code quality powerhouse.
Recommended pyproject.toml (2026)
[tool.ruff]
line-length = 88
target-version = "py313"
[tool.ruff.lint]
select = ["E", "F", "I", "B", "UP", "RUF", "C4", "SIM", "PL", "RET", "ARG"]
fix = true
preview = true
Conclusion
Mastering Ruff configuration will dramatically improve your code quality in 2026.
Also read: Modern Python Project Setup with uv + Ruff