A great reason to add flake8 to your CI edit: forgot that flake8 doesn't check for mutable arguments by default – need to add https://github.com/PyCQA/flake8-b

A great reason to add flake8 to your CI edit: forgot that flake8 doesn't check for mutable arguments by default – need to add https://github.com/PyCQA/flake8-bugbear https://github.com/PyCQA/flake8-bugbear