Ruff

Ruff: An Extremely Fast Python Linter and Code Formatter

Ruff is a Python linter and code formatter written in Rust. It is designed to be significantly faster than existing linters and formatters, while also offering a wider range of features.

Use Cases

Ruff can be used for a variety of tasks, including:

• Linting code to identify potential errors and stylistic inconsistencies
• Formatting code to ensure that it adheres to a consistent style guide
• Automatically fixing errors (experimental)

Why Use Ruff Over Alternatives?

Ruff offers several advantages over other linters and formatters, including:

• Speed: Ruff is significantly faster than other linters and formatters, such as Flake8 and Black. This can be a major advantage for large codebases.
• Functionality: Ruff combines the functionality of multiple linters and formatters into a single tool. This can simplify your development workflow and reduce the number of tools you need to learn and use.
• Built-in caching: Ruff caches the results of its analysis, so that it does not need to re-analyze unchanged files. This can further improve its performance.
• Fix support: Ruff can automatically fix some errors, such as removing unused imports.
• Monorepo-friendly: Ruff is designed to work well with monorepos, which are codebases that contain multiple projects.

Ruff and Ruff Format

Ruff is a single tool that can be used for both linting and formatting. It also includes an experimental Language Server Protocol (LSP) implementation that can provide language support for Ruff in code editors.

Extensions

Ruff has extensions for popular code editors, including PyCharm, VS Code, and Neovim. These extensions can provide features such as syntax highlighting, code completion, and on-the-fly linting and formatting.

Installation

Ruff can be installed using pip:

Bash

pip install ruff

Usage

Once Ruff is installed, you can lint and format your code using the following commands:

ruff lint <filename>
ruff format <filename>

You can also configure Ruff to lint and format your code automatically on save.