Top 3 questions to test someones Python level, what would they be?

Question

If you had to judge someones level of Python understand in just 3 questions, what would you ask?

Answer 1

1. Explain generators.

2. Write unit tests for <important-piece-of-code>.

3. Who is Alex Martelli?

Answer 2

This is pretty much the same as for any language.

• What projects have you done with Python?
• What is your favorite Python reference?
• Have you worked with other people on code written in Python?

That's how I would judge. If I wanted to test, it would depend on whether I were looking for someone to write in 2.x or 3.x. Since I'm familiar with the 2.x stuff...

• How would you create a list containing the result of [insert operation] on another list?
• How would you do the above if you cared about memory usage?
• What tool do you use to debug your Python code?

CW'd because the question should be.