This appears to be a fairly arbitrary list of questions, and the categorizations (including the Junior and Middle lists linked at the bottom) are similarly arbitrary.

For example, some of the Middle questions seem to me more things a Junior should be asked, and vice versa. Specifically, it asks about modulus operator in Middle but expects a Junior to identify the key features of Python. I would seriously expect most beginners to have some idea about modulus, but next to no idea about key features.

At any rate, I very much prefer a short list of very open ended or very focused questions with lots of room to grow. Like 3 to 5 questions should be able to fill an hour if they are good questions by my metrics.

For general questions, I like things like "What are the key features of the language?" but I phrase them as "What are your favorite parts of the language? Least favorite parts?"

Those answers are often very telling -- often Juniors will have very shallow answers or none at all for "least favorite".

For specific questions I like things like "reverse a string". Not so difficult that it's a brain teaser, but plenty of room for diving into different approaches and discussing idioms of the language.

Again, these answers are very telling -- often Juniors will only be able to write one very simple version, but a Senior can write several and talk about the trade-offs.