Enhance Python EXE Data Handling

I have a working Windows executable that was packaged from a Python project, and I now need to extend its capabilities rather than fix bugs. Specifically, the way it moves data in and out has to change. At the moment the program writes to a single local file; I want it to support a more flexible import-export routine so users can choose where and how the data is saved (for example a different folder, network share, or a future cloud option).

You will receive the existing source code and the current EXE so you can see how it behaves. Your job is to adjust the Python code, rebuild the executable with PyInstaller (or whichever packager you prefer), and hand back:

• the updated EXE ready to run on Windows 10/11
• the modified source files
• a short change-log explaining which modules or functions were touched

Please keep the current interface intact—only the data handling logic should be revised. If you need clarity on the preferred file formats or directory structure, let’s sort that out at the start. I appreciate clean, well-commented code and a quick turnaround.