Aliwo contributed to the python/mypy repository by enhancing typing compatibility for Python 3.13 and newer. Focusing on static analysis and type hinting, Aliwo implemented version-aware logic to support nested usage of Final and ClassVar annotations, aligning mypy’s behavior with updates in Python’s typing module. This work involved Python development and careful handling of type semantics to ensure accurate analysis under the latest language standards. By correcting mypy’s interpretation of these annotations, Aliwo reduced typing-related errors and facilitated safer migration for codebases adopting Python 3.13+. The contribution demonstrated depth in understanding both static analysis and evolving Python typing features.