Worked on the pola-rs/polars repository to enhance reliability in the Rust layer by addressing error handling in string-to-integer conversions. Focused on stabilizing the to_integer function, the developer implemented robust input validation to ensure the base parameter falls within the accepted range of 2 to 36. By returning a PolarsResult instead of allowing panics on invalid input, the update aligned with Polars’ error-handling conventions and reduced the risk of crashes in production environments. This work utilized Rust and Python, with an emphasis on unit testing and consistent error handling, contributing to improved stability and maintainability of the codebase.