Worked on the scikit-learn/scikit-learn repository to deliver an API unification enhancement for LinearModelCV, focusing on regularization and machine learning workflows. The contribution replaced the n_alphas parameter with a unified alphas parameter across LinearModelCV and its subclasses, supporting both integer and array-like values to provide flexible control over the regularization path. This change simplified the API, improved consistency, and aligned with ongoing maintainability efforts. Implemented in Python, the update leveraged skills in API design and deprecation, reducing user confusion and streamlining onboarding for new contributors by providing a more intuitive and consistent interface for regularization parameter selection.