as this is your first post, I have moved your query to the category as per you described from which specialisation and course it is. From next time, please choose right category to get response from course related mentors.
Also just a heads sharing link to graded assignment, sharing codes correct or incorrect, sharing assignment notebook is against community guidelines. So refrain from posting grade cell codes.
Keep Learning!
Also refer below post comment to do the correct to your code
regards
DP