In November 2024, Christian Lorentzen refactored the IRLSData class in the Quantco/glum repository to use Python’s dataclass feature, focusing on improving data modeling and maintainability. By centralizing IRLSData’s attributes and reducing boilerplate code, he streamlined the class structure and made future enhancements more straightforward. This work leveraged object-oriented programming and refactoring skills to align the codebase with modern Pythonic practices, enhancing readability and testability. Although no bugs were fixed during this period, the depth of the refactor laid a foundation for easier maintenance and scalability, demonstrating a thoughtful approach to sustainable software engineering within the project.