Worked on the python/mypy repository to enhance typing compatibility for Python 3.13 and newer versions, focusing on the static analysis of Final and ClassVar annotations. Addressed a bug by implementing version-aware logic that aligns mypy’s handling of these type hints with updates in the Python typing module, particularly supporting nested usage scenarios. This adjustment reduces analysis errors and improves migration safety for projects adopting the latest Python releases. The work involved Python development with an emphasis on static analysis and type hinting, ensuring that mypy accurately reflects the evolving semantics of type annotations in modern Python codebases.