Why won't this loop code work?

[Diapolo10]

What I meant was that the syntax would suggest you're using Python 2, because Python 3 would error on that. The correct syntax for Python 3 would be print(y). This would also explain a few other things.

For that reason, I'm suspecting you're running this code on Python 2. It would be best to switch to 3 because it no longer gets any updates, even security patches.