ruff/crates/ruff_python_formatter
Alex Waygood 9c938442e5
Some checks are pending
CI / cargo test (linux, release) (push) Blocked by required conditions
CI / Determine changes (push) Waiting to run
CI / cargo fmt (push) Waiting to run
CI / cargo clippy (push) Blocked by required conditions
CI / cargo test (linux) (push) Blocked by required conditions
CI / cargo test (windows) (push) Blocked by required conditions
CI / cargo test (wasm) (push) Blocked by required conditions
CI / cargo build (release) (push) Waiting to run
CI / cargo build (msrv) (push) Blocked by required conditions
CI / cargo fuzz build (push) Blocked by required conditions
CI / fuzz parser (push) Blocked by required conditions
CI / test scripts (push) Blocked by required conditions
CI / ecosystem (push) Blocked by required conditions
CI / cargo shear (push) Blocked by required conditions
CI / python package (push) Waiting to run
CI / pre-commit (push) Waiting to run
CI / mkdocs (push) Waiting to run
CI / formatter instabilities and black similarity (push) Blocked by required conditions
CI / test ruff-lsp (push) Blocked by required conditions
CI / benchmarks (push) Blocked by required conditions
[minor] Simplify some ExprStringLiteral creation logic (#15775)
2025-01-27 18:51:13 +00:00
..
resources/test/fixtures Fix unstable f-string formatting for expressions containing a trailing comma (#15545) 2025-01-17 10:08:09 +01:00
src Remove customizable reference enum names (#15647) 2025-01-21 13:46:31 -05:00
tests [minor] Simplify some ExprStringLiteral creation logic (#15775) 2025-01-27 18:51:13 +00:00
Cargo.toml Bump MSRV to Rust 1.80 (#13826) 2024-10-20 10:55:36 +02:00
CONTRIBUTING.md Update pre-commit dependencies (#14719) 2024-12-02 06:02:56 +00:00
generate.py Standardise ruff config (#15558) 2025-01-21 12:09:11 +01:00
orphan_rules_in_the_formatter.svg
README.md Add f-string formatting to the docs (#15367) 2025-01-09 10:20:06 +01:00

Ruff Formatter

The Ruff formatter is an extremely fast Python code formatter that ships as part of the ruff CLI.

Goals

The formatter is designed to be a drop-in replacement for Black, but with an excessive focus on performance and direct integration with Ruff.

Specifically, the formatter is intended to emit near-identical output when run over Black-formatted code. When run over extensive Black-formatted projects like Django and Zulip, > 99.9% of lines are formatted identically. When migrating an existing project from Black to Ruff, you should expect to see a few differences on the margins, but the vast majority of your code should be unchanged.

If you identify deviations in your project, spot-check them against the intentional deviations enumerated below, as well as the unintentional deviations filed in the issue tracker. If you've identified a new deviation, please file an issue.

When run over non-Black-formatted code, the formatter makes some different decisions than Black, and so more deviations should be expected, especially around the treatment of end-of-line comments. For details, see Style Guide.

Getting started

Head to The Ruff Formatter for usage instructions and a comparison to Black.