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Pylint is a static code analysis tool for Python or Jupiter Notebooks. It checks your Python code for errors, enforces a coding standard, and looks for code smells.

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Supported Files

Pylint will run on files with the following extensions:
  • *.py
  • .ipynb (using nbqa)

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Configuration

Pylint supports the following config files:
  • .pylintrc
  • pylintrc
  • .pylintrc.toml
  • pylintrc.toml
CodeRabbit will not run Pylint if no config file is found.

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What CodeRabbit runs

Pylint runs per-file in a sandbox. We validate the config before execution.

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Security policy and restrictions

  • We skip if the config declares init-hook, which can execute arbitrary Python code at startup.

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When we skip Pylint

CodeRabbit will skip running Pylint when:
  • No config file is found.
  • The config contains init-hook.
  • Pylint is already running in GitHub workflows.
  • Config parsing fails or appears unsafe.

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Profile behavior

In Chill mode, Pylint filters out:
  • Warnings and conventions
  • E0401 (Unable to import)
  • C0301 (Line too long)
In Assertive mode, all findings are reported.

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Features

Pylint can detect many issues such as:
  • Coding standard violations (PEP8)
  • Unused variables and imports
  • Undefined variables
  • Code smells and refactoring suggestions
  • Error-prone constructs
  • And many more