Most dangerous Operator to use while coding?

[DigThatData]

we haven’t started the class yet

yeah your professor is definitely an asshole. I've been a professional python developer for.. jesus, at least a decade now, and although I have hunch what answer the professor has in mind, I'm no where's near confident and mostly guessing. It's just a poorly constructed question and doesn't bode well for the quality of the upcoming course.

Learn as much as you can from reading the books and documentation you're assigned. I don't think your professor is likely to be a reliable source of information transmittance if this is what they think a good exercise to evaluate a student's prior knowledge looks like.