Your file has a lot of shenanigans that are triggered if 'shutil' fails to be imported, adding an extra 139 lines at the top of the file, which is exactly how offset your traceback is compared to our lines. The rest of the file is virtually identical. This makes me wonder, however, why you have these differences (and that this might not be the only different file).

I would still like the output of sys.version, which, unlike 'python --version' contains the build date and time, among other things. Bonus points for the 'sys.implementation' output. It's unlikely to be of relevance, but I would rather explore every possibility.