Ruff Formatter

Ruff Formatter applies Ruff's formatting and linting rules to Python source code to produce a consistently formatted version.
Target users are Python developers, teams, and CI engineers who want deterministic style, reduced review diffs, and faster feedback. It can be used before commits, in pre-commit hooks, or within CI pipelines.
Conceptually, the tool analyzes the Python syntax tree, applies formatting decisions, reflows whitespace, and reorders imports while preserving semantic meaning. It relies on pyproject.toml settings and Ruff rule sets to determine which changes are allowed and which rules to enforce.
Key features include configurable line length, optional rule selection, robust handling of syntax errors, and deterministic outputs for large files. It outputs the formatted source code and, optionally, diagnostics about rules that could not be applied or that would have caused changes. It is designed to integrate with development workflows and automation, providing repeatable results across environments.
Use cases cover pre-commit checks, CI formatting stages, and local development quality gates. The tool helps teams reduce stylistic diffs, streamline code reviews, and maintain a uniform codebase aligned with Ruff standards.