Worked on stabilizing data handling in the cctbx_project repository by addressing a critical issue in temporary file I/O. Focused on improving the reliability of data serialization workflows, the developer fixed a bug where temporary files were not being read in binary mode during unpickling, which previously led to data corruption and unpickling errors in downstream processes. This targeted change ensures that file handling operations using Python are robust and less prone to subtle serialization failures. The work demonstrates attention to detail in managing file streams and reinforces the integrity of data pipelines that rely on correct file mode usage and serialization practices.