Uncompromising Python code formatter
Visit WebsiteReviews onCapterra
17 reviews trackedThe Bottom Line
Entry price
Free, no paid tier
Biggest pro
Python code formatter
Biggest con
Python only
TL;DR - Black
- Black is the uncompromising Python code formatter that enforces consistent style
- It formats code automatically with zero configuration, ending style debates
- Free and open-source
Pricing: Free forever
Best for: Individuals & startups
4.1/5 across review platforms
What is Black?
Black formats Python code and doesn't ask questions. No configuration options, no style debates-feed it code, get back consistently formatted output. The format is opinionated, and that's the point.
Integration with editors reformats on save. CI checks ensure commits are formatted. Teams stop arguing about style because Black decides for everyone.
Python teams adopt Black to end formatting discussions forever. The loss of control is a feature, not a bug.
Available on: Web, Windows, macOS, Linux
Pros & Cons
Pros
- Python code formatter
- Opinionated
- No configuration
- Active development
- Industry standard
Cons
- Python only
- No customization
- Strict formatting
- Breaking changes history
- Slow on large files
Ratings Across the Web
4.1(17 reviews)
Ratings aggregated from independent review platforms. Learn more
Key Features
Python formatterUncompromisingDeterministicPEP 8CI integrationOpen source
Pricing Plans
Pricing checked May 27, 2026
Most Popular
Free
Free
Open source
- Python formatter
- Opinionated style
- Fast
- MIT license
Reviews
4.1/5
Across 17 verified user reviews on Capterra
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Black FAQ
Is Black free?
Yes, Black is completely free and open source. MIT license. The uncompromising Python formatter.
What is Black?
Black is an opinionated Python code formatter. Minimal configuration, consistent output. 'You can have any color as long as it's black.'
Black vs Prettier?
Black is for Python only. Prettier handles JavaScript, CSS, etc. Both are opinionated formatters for their ecosystems.
Why use Black?
Ends formatting debates. Consistent code across team. Fast and deterministic. Industry standard for Python.
Source: black.readthedocs.io