why use len(list(secret_word)) in 2nd while loop? c

In code, the len(string) is always the same as the len(list(string)).

In looking at the teacher's notes for the previous video letter game introduction, Kenneth says:

Did you notice?

There's a tricky condition (on purpose) in the final version of our code from this video. Words that have repeated characters won't be marked as correct once they're all correctly guessed due to our len() comparisons. See if you can find a way to fix that yourself!

This issue is if there are repeated letters in secret_word, the number of guesses will never match the total letters of secret_word, The solution would be to make a set out of it, so you are comparing:

len(good_guesses) == len(set(secret_word))

>>> a = "blueberry"
>>> len(a)
9
>>> len(set(a))
6

So not explicitly stated, I believe Kenneth meant to use set instead of list