Worked on stabilizing object listing behavior in the stripe/stripe-python repository by addressing a bug in ListObject pagination logic. Focused on ensuring that reverse ordering functions correctly when the starting_after parameter is None, which improved the reliability of pagination for both forward and reverse iterations. Utilized Python for backend and API development, implementing comprehensive tests to validate both synchronous and asynchronous listing scenarios. This approach reduced the risk of edge-case failures and regressions, resulting in more consistent data presentation for users iterating over large object sets. The work enhanced overall stability and reduced potential support issues for stripe-python clients.