isort
Automatically sorts Python imports to improve code readability and maintainability.
Pricing
Free tier
Flat rate
Adoption
→StableLicense
Open Source
Data freshness
Aging · Jun 8, 2026Overview
What is isort?
isort is a utility that automatically sorts, checks, and combines import statements in Python files. It helps developers adhere to style guides like PEP8 by ensuring imports are organized consistently across their projects.
Key differentiator
“isort stands out as a lightweight, yet powerful tool for automating the process of organizing Python imports, making it an essential part of any Python developer's toolkit.”
Capability profile
Capability Radar
Honest assessment
Strengths & Weaknesses
↑ Strengths
↓ Weaknesses
isort is primarily designed for Python and does not natively support other languages, limiting its utility in polyglot projects.
Advanced users may find the configuration options cumbersome or insufficiently granular to meet all style guide requirements without manual intervention.
Processing a large number of files can introduce noticeable delays, impacting build times in CI/CD pipelines.
Fit analysis
Who is it for?
✓ Best for
Developers who need to maintain consistency in their Python projects and adhere to PEP8 style guidelines.
Projects with multiple contributors where consistent import ordering is crucial for readability.
Automating the process of organizing imports as part of a continuous integration/continuous deployment (CI/CD) pipeline.
✕ Not a fit for
Developers who prefer manual control over their code organization and do not require automated tools.
Projects that are already well-maintained with consistent import ordering practices in place.
Cost structure
Pricing
Free Tier
Available
Open source — free to use
Starts at
$0
Model
Flat rate
Enterprise
None
Performance benchmarks
How Fast Is It?
Ecosystem
Relationships
Alternatives
Next step
Get Started with isort
Step-by-step setup guide with code examples and common gotchas.