Worked on the python/cpython repository to enhance the stability and reliability of the Zstd module integration. Focused on aligning test expectations with actual module behavior and ensuring that all necessary build-time dependencies were present for successful _zstd module compilation. Utilized Python and Shell scripting to address dependency management and error handling, which reduced CI failures and improved the consistency of compression-related tests. The work involved correcting exception type handling in Zstd compression tests and refining the build process to support broader Zstandard functionality. This approach contributed to more robust DevOps workflows and dependable automated testing for the project.