Worked on enhancing data quality for the Asabeneh/30-Days-Of-Python repository by correcting and enriching the country list within countries.py. Focused on identifying inaccuracies and omissions in the dataset, then applied targeted Python programming techniques to update and validate the entries. This effort improved the reliability of course materials for learners by ensuring the country data was both accurate and complete. Demonstrated skills in Python and data management, with careful use of version control to implement and document the fix. The work addressed a specific data integrity issue, reducing the risk of misinformation and supporting better educational outcomes for users.