Worked on maintaining roster accuracy and data integrity for the swosu/SwosuCsPythonExamples repository by updating course enrollment records. Delivered a feature that appended a new participant to the 2025_sp_cs1.txt file, ensuring the course roster in the Data_visualization directory reflected current enrollment. Utilized Python for file input and output operations, focusing on precise text manipulation to maintain data consistency. Employed version control best practices to track changes and support repository stewardship. The work emphasized careful data entry and transparent commit history, resulting in improved administrative efficiency and reliable data provenance for course management without introducing or resolving any reported bugs.