Python quiz
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Which built-in function outputs text to the screen or console?
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More questions about Python
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Which built-in function returns the number of items in a Python list?
Answer: len()
Why: len() is an O(1) operation because Python data structures store their element count internally.
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Which Python collection gives the fastest appends at both ends?
Answer: deque
Why: Inserting at the front of a list requires shifting every element in O(n) time, whereas a deque does it in O(1).
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If funcs = [lambda: i for i in range(5)], what is funcs[0]()?
Answer: 4
Why: Closures resolve variables when called rather than when created, so each lambda sees the loop's final value.
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What index number retrieves the very first element of a Python list?
Answer: 0
Why: Negative indexing is also supported, where index -1 accesses the very last element of the list.
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When does the else block of a Python for loop execute?
Answer: If no break statement was triggered
Why: This pattern eliminates the need for boolean flag variables when searching through sequences for a target item.
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What kind of object does super() return?
Answer: A proxy object
Why: Instead of returning the parent class directly, super() produces a proxy object that delegates lookups dynamically.
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