custom_rules: |
  ## Pythonic Design
  - Does it follow "The Zen of Python" principles?
  - Are Python idioms used appropriately?
  - Does it leverage Python's strengths (e.g. duck typing, iterators)?
  - Does it avoid un-Pythonic patterns from other languages?
  - Is it consistent with the Python standard library style?
  - Does the API use proper type hints and follow best static typing practices for Python?
