comparing two lists

[nilamo]

Let's rewrite it a bit, because I don't think index is what you think it is.

>>> CORRECT_ANSWERS = ["A" , "C" , "A" , "A" , "D" ,
...                        "B" , "C" , "A" , "C" , "B" ,
...                        "A" , "D" , "C" , "A" , "D" ,
...                        "C" , "B" , "B" , "D" , "A"]
>>> for index in CORRECT_ANSWERS:
...   print(index)
...
A
C
A
A
D
B
C
A
C
B
A
D
C
A
D
C
B
B
D
A

If you actually do want the index, and not the elements of the list, then enumerate() is your hero.

>>> for index, item in enumerate(CORRECT_ANSWERS):
...   print(f"{index} => {item}")
...
0 => A
1 => C
2 => A
3 => A
4 => D
5 => B
6 => C
7 => A
8 => C
9 => B
10 => A
11 => D
12 => C
13 => A
14 => D
15 => C
16 => B
17 => B
18 => D
19 => A

If you look back at your previous code, you were looping over range(len(CORRECT_ANSWERS)), but now you're looping over the list directly, which doesn't give indices.