Worked on the vllm-project/llm-compressor repository to modernize the Python codebase by updating type hints in the modifiers module to Python 3.10+ syntax. Focused on code refactoring, the effort involved replacing legacy type hint constructs with the new union and optional syntax, as well as updating built-in collection types. This syntax-only change affected 17 files, improving code readability and maintainability without altering runtime behavior. All updates were validated through linting, formatting, and compilation checks. The work leveraged Python and type hinting expertise, reducing technical debt and preparing the project for easier future maintenance and platform upgrades.