Worked on the optuna/optuna repository, focusing on refactoring the HyperbandPruner module to standardize string formatting using Python f-strings. This targeted update improved code readability and ensured formatting consistency throughout the module, reducing the risk of formatting-related errors and simplifying future enhancements. The approach emphasized maintainability and alignment with repository standards, making it easier for new contributors to onboard and for reviewers to assess changes. Leveraging skills in Python, software development, and code refactoring, the work contributed to a cleaner codebase and supported ongoing repository maintenance, even though no major bugs were addressed during this period of focused improvement.