I have been using the fixit framework which is itself based on libcst to create custom rules and lint all the Python files. The module fixit provides built-in rules with the package. Here's a link to the documentation for fixit and on the left side you will see the Rules section.

I am thinking of integrating some of the useful ones in the bot. It's as simple as importing the rule class in the __init__.py of the algorithms.parser.rules package, the rest will be taken care of by the code. A lot of them are taken directly from the PEP8 style guide.

Some of the useful ones:

• CollapseIsinstanceChecksRule
• ComparePrimitivesByEqualRule
• CompareSingletonPrimitivesByIsRule
• NoInheritFromObjectRule
• NoRedundantArgumentsSuperRule
• NoRedundantFStringRule
• NoRedundantListComprehensionRule
• ReplaceUnionWithOptionalRule
• UseIsNoneOnOptionalRule
• UseTypesFromTypingRule

We can define any arbitrary rule, so if there is something that you have in mind, please do share.