It seems I broke the rule from the problem statement, but I can't remember to have read that by the time I implemented my solution (it was 8 yeas ago, by the way).

This is about what I was trying to do, but far more efficient.

This actually doesn't work, but it passed the test....?

I was wondering how to create a house but I'm not that advanced at SQL yet lol

OK, but that feels like cheating...

Oh, ok. I was trying to use regular expressions to get all whitespace, but it didn't work. I'll fix it!

Well, your num_sym list logic is wrong. It contains the letter s and that's why it fails. Your code isn't shifting it.

print('s' in '\s') # True

Mine keeps saying that S should be K... anybody else have this issue?

That's what I did, but spaced out to make it more readable.

...wow. I guess that works! That's a really interesting way to do it :D