This wasn't intended as a criticism of you or your teaching. I appreciate that you're trying to teach something more significant than the detail.

The reason that I highlighted this, is that the code has been generated by AI which the author obviously hasn't tested. If the code wasn't important, he could have simply shared pseudo code but he didn't, he shared the entire block which he didn't write. As a coder, if somebody goes to the effort of sharing the entire code, I'd be 100% sure that my code worked perfectly. (I'd also share the output.)

I've said more in my other comment.