Another problem with pickles with any sort of living code base is when one makes modification to the type itself - renaming, refactoring, whatever. Picking obje

Another problem with pickles with any sort of living code base is when one makes modification to the type itself - renaming, refactoring, whatever. Picking objects (and nested objects) that aren't explicitly meant for data storage/retention/transmissions leads to headaches. It's best to use another dedicated type or library specifically for this task.