pycodestyle

What pycodestyle is

pycodestyle is a free Python code checker that identifies some style issues covered by PEP 8. It runs on Linux, macOS, and Windows, and its command-line reports can be parsed by editors to jump to an error location. Reports can include source code and PEP 8 guidance, count errors, and use default, pylint, or custom formatting. Users can configure it for themselves or a project, including through setup.cfg or tox.ini files, and its plugin architecture allows additional checks. Flake8 is described as a wrapper around pycodestyle and similar tools that supports plugins.

The project describes pycodestyle as a single Python file that needs only the standard library and says it includes a comprehensive test suite. Its documentation provides pip commands to install, upgrade, and uninstall it. The listed plan is free; it is an MIT-licensed Python package requiring Python >=3.10. The checker does not cover every PEP 8 rule. Naming conventions, docstring conventions, and automatic fixing are outside its scope, with plugins or related tools pointed to for those needs.

Who it suits

pycodestyle suits Python developers who want command-line checks for selected PEP 8 conventions and editor-friendly error locations. It also fits projects that need configurable reports or want to extend checks through plugins, but not users seeking naming or docstring conventions or automatic fixing within the library itself.

Limits

The free plan is a checker with deliberately limited PEP 8 coverage: it does not enforce every rule. Naming conventions, docstring conventions, and automatic fixing are outside its scope.

Getting started

1. Open the pycodestyle documentation website.
2. Use the documented pip command to install pycodestyle.
3. Configure settings for yourself or a project, including through setup.cfg or tox.ini if needed.
4. Run its command-line checker and select the report format you need.

Verdict

Choose pycodestyle for free, configurable checks of selected PEP 8 conventions, especially when editor navigation or plugin extensions matter. Look elsewhere or use plugins or related tools if you need exhaustive rule coverage, naming or docstring checks, or automatic fixing.