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YAPF

Free#30 of 34 in Code Formatting Tools

YAPF: A flexible Python formatter with strong control over styles, diffs, and scope. Ranked #30 of 34 in Code Formatting Tools by our editors (6.3/10); pricing: Open source; best for teams needing configurable Python formatting.

6.3/10Editor score

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At a glance

Editor score
6.3 / 10
Pricing
Open source
Best for
Teams needing configurable Python formatting
Paid from
Free
Supported languages
Python
Facts checked
21 Sep 2026

Where it wins
- Formats files, directories, line ranges, and changed lines
- Supports PEP 8, Google, YAPF, and Facebook styles
- Includes library APIs, ignore patterns, and editor plugins
Where it doesn't
- Supports Python only
- Verified editor integrations are limited to IntelliJ/PyCharm, IPython, and VS Code
- The project is marked beta in its package metadata

Our verdict on YAPF

YAPF is an open-source command-line and library-based formatter for Python source code. It suits developers and teams that want configurable formatting across individual files, directory trees, selected line ranges, or changed lines from unified diffs. It runs on Windows, macOS, and Linux, and requires Python 3.7 or newer. Developers can also use its FormatCode and FormatFile library APIs when formatting needs to be part of a Python workflow.

Scope control is one of YAPF's clearest strengths. It can format in place, generate unified diffs, run formatting in parallel, and exclude files through .yapfignore or patterns in pyproject.toml. Style configuration covers PEP 8, Google, YAPF, and Facebook options, giving teams a way to align output with an established preference rather than accepting a single fixed format. The yapf-diff tool adds a focused workflow for formatting only changed lines, which can help limit formatting changes in active codebases.

YAPF also fits common Python editing environments through plugins and extensions for IntelliJ/PyCharm, IPython, and Visual Studio Code. Its open-source model and library APIs make it suitable for teams that want to incorporate formatting into their own tooling. The trade-off is focus: it supports Python rather than multiple languages, and its verified editor integration set is narrower than some alternatives. The package metadata marks the project beta, and Google's ownership of the code does not make YAPF an official Google product. Choose YAPF for configurable Python formatting with granular scope control; consider an alternative if broader language coverage or a wider integration ecosystem is a priority.

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YAPF pricing

Plans Open sourceFree Free to use — no paid tier required for the core job.

See plans on github.com

YAPF fact sheet

Free plan	Not verified
Paid from	Free
Supported languages	Python
Supported platforms	Windows, macOS, Linux
Editor integration	Yes
Ignore files	Yes
Changed-lines formatting	Yes
Library API	Yes
License model	Open_source
Deployment	Desktop
Platforms	Windows, macOS, Linux
Support	Docs
Built for	Solo, Small business, Mid-market, Enterprise (editorial estimate)
Integrations	3 integrations: IntelliJ/PyCharm, IPython, Visual Studio Code
Pricing	Open source
Website	github.com
Facts checked	21 Sep 2026

YAPF integrations

YAPF lists 3 integrations on its own site.

IntelliJ/PyCharm
IPython
Visual Studio Code

Alternatives to YAPF

See all YAPF alternatives →

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Featured on iTechGuides

YAPF is listed in our Code Formatting Tools directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update