During March 2026, Cyh focused on enhancing the usability of the pola-rs/polars Python API by improving its documentation. They authored detailed docstrings for the Expr.struct.__getitem__ and Series.__setitem__ methods, clarifying their behavior and usage for developers. This work, implemented in Python, aimed to reduce onboarding time and make the API more accessible to new users. By linking documentation updates directly to the codebase, Cyh ensured traceability and maintainability. Although no bugs were fixed during this period, the depth of the documentation improvements laid a foundation for better user support and contributed to the overall discoverability of the API.