Fixit provides a highly configurable linting framework with support for auto-fixes, custom "local" lint rules, and hierarchical configuration, built on LibCST.
Fixit makes it quick and easy to write new lint rules and offer suggested changes for any errors found, which can then be accepted automatically, or presented to the user for consideration.
Fixit 2.0 has been rebuilt for better configuration and support for custom lint rules. If you are using Fixit 0.1.4 or older, take a look at the legacy documentation or the stable branch.
For more details, see the user guide.
Fixit is MIT licensed, as found in the LICENSE file.