Snippet

    def check_quiz(responses: list[bool]) -> int:
        answer_key: list[bool] = [True, True, False]
        correct: int = 0
        idx: int = 0
        while idx < len(responses):
            if responses[idx] == answer_key[idx]:
                correct += 1
                idx += 1
            else:
                idx += 1
        return correct

    def main() -> None:
        my_quiz: list[bool] = [True, True, True]
        grade: int = check_quiz(my_quiz)
        print(f"{grade} out of 3 questions correct.")


    main()

Solution

Video

Image Description

The Memory Diagram includes one box titled Output and below that box two columns, the left one titled Stack and the right one titled Heap.

The Stack includes 3 frames in the following order from top to bottom including Globals, main, and check_quiz.

The Globals frame has 2 variables including check_quiz and main. - check_quiz has id 0, it is a function on the Heap (lines 1-11). - main points id 1, it is a function on the Heap (lines 14-17).

The main frame has 4 items including the RA and RV, and variables named my_quiz and grade. - The RA is defined at line 19. - The RV is None. - my_quiz has id 2, it is a list[bool] on the Heap. - Indexes 0, 1, 2 and values True, True, True respectively. - grade is 2.

The check_quiz frame has 6 items including the RA and RV, and variables named responses, answer_key, correct, and idx. - The RA is defined at line 15. - The RV is 2. - responses has id 2. - answer_key has id 3, it is a list[bool] on the Heap. - Indexes 0, 1, 2 and values True, True, False respectively. - correct is 2. - Previous values of correct include 0 and 1, which are now crossed out. - idx is 3. - Previous values of idx include 0, 1, and 2, which are now crossed out.

The Heap includes 2 function objects, and 2 list[bool] objects.

Output includes the phrase: “2 out of 3 questions correct.”