Message 263766 - Python tracker

To be fair, I don't think we actually need a unit test to check if `os.get_terminal_size` exists, as we catch any `AttributeError` at all. I'd want to keep the except clause there to properly handle `sys.__stdout__` being `None` (or simply absent). I also don't consider that I'm fixing a bug here, but more like an oversight. The except clause with `NameError` is obviously an oversight from when the function was ported from `os` to `shutil`, so I'd rather fix it.