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pycodestyle

pycodestyle is a free Python checker that evaluates selected conventions from PEP 8.

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#23 of 33
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Score
6.0
pycodestyle's website

What pycodestyle is

pycodestyle is a free Python checker that evaluates selected conventions from PEP 8. It runs on Linux, macOS, and Windows, and its parseable output can direct an editor to an error location. The command line can show source and PEP 8 guidance, count errors, and format reports as default, pylint, or custom output. Configuration is available at user and project levels, including setup.cfg and tox.ini. Its plugin architecture allows additional checks, while Flake8 is described as a wrapper around pycodestyle and similar tools with plugin support. The project describes the package as a single Python file using only the standard library and includes a comprehensive test suite. Installation, upgrades, and removal are documented through pip. pycodestyle does not enforce every PEP 8 rule; naming conventions, docstrings, and automatic fixing are outside its scope. The listed plan is free, MIT licensed, and requires Python >=3.10.

Good

  • Runs on Linux, macOS, and Windows
  • Parseable output supports editor navigation
  • Configurable at user and project levels
  • Plugin architecture adds checks
  • Free MIT-licensed package

Watch out

  • Does not enforce every PEP 8 rule
  • No automatic fixing
  • Naming and docstring checks are out of scope
  • Requires Python >=3.10

Who it suits

pycodestyle suits Python developers who want configurable PEP 8 checks in editors or CI. Users needing naming, docstring, or automatic fixes need other tools or plugins.

Verdict

pycodestyle provides lightweight, configurable style checking with editor-friendly reports and plugin support. Its limited rule coverage means it should be paired with other tools when broader conventions or autofixing are needed.

Plans and prices

From pycodestyle's own pricing page, checked 9 Oct 2026.

All about pricing
PlanPriceWhat it gives you
pycodestyleFreeMIT licensed Python package · requires Python >=3.10

The facts

Each one read from pycodestyle's own pages, with the date it was checked.

What it does

Compatibility
PyPI classifies the package as OS independent and lists CPython and PyPy implementations.checked 9 Oct 2026
Configuration
Users can configure pycodestyle at user and project levels, including through setup.cfg or tox.ini.checked 9 Oct 2026
Editor output
Its parseable output lets users jump to an error location in an editor.checked 9 Oct 2026
Installation
The documentation gives pip install, upgrade, and uninstall commands for pycodestyle.checked 9 Oct 2026
Integration
Flake8 is described as a wrapper around pycodestyle and similar tools that supports plugins.checked 9 Oct 2026
Lightweight
The project says it is a single Python file that requires only the standard library.checked 9 Oct 2026
Limitations
The checker does not enforce every PEP 8 rule and does not aim to be exhaustive.checked 9 Oct 2026
Out of scope
Naming conventions, docstring conventions, and automatic fixing are outside the library’s scope; the documentation points to plugins or related tools for these needs.checked 9 Oct 2026
Plugins
Its plugin architecture makes it easy to add new checks.checked 9 Oct 2026
Purpose
pycodestyle checks Python code against some of the style conventions in PEP 8.checked 9 Oct 2026
Reporting
The CLI can show source and PEP 8 guidance, count errors, and format output as default, pylint, or custom.checked 9 Oct 2026
Security and trust
PyPI lists the 2.15.0 source distribution and wheel as not uploaded using Trusted Publishing.checked 9 Oct 2026
Test suite
The project says it comes with a comprehensive test suite.checked 9 Oct 2026

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