Pls help me to do this code: checks student answers to an exam quiz against model answers and outputs how many correct answers each student achieved.

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Python

Python3.6

Python3.3

Modify the code in this program to include following:

a. refactor the script into a function, get_grades(),which returns a dictionary containing
the grade (number of correct answers) achieved per student;

b. write a new function, sorted_by_grade(), which displays students in ascending order of
the grade they achieved; and

c. write a new function, main(), which simply calls the functions you defined in a and b above

<pre>student_answers = {
    "Adam": ['A', 'B', 'A', 'C', 'C', 'D', 'A', 'D', 'A', 'E'],
    "Bob":  ['D', 'B', 'A', 'B', 'C', 'A', 'C', 'D', 'A', 'E'],
    "Carol":['A', 'C', 'D', 'A', 'C', 'B', 'C', 'D', 'A', 'E'],
    "Jon":  ['C', 'B', 'A', 'E', 'D', 'C', 'A', 'D', 'A', 'E'],
    "Liz":  ['A', 'B', 'A', 'C', 'A', 'E', 'D', 'E', 'A', 'E'],
    "Marc": ['A', 'C', 'D', 'C', 'C', 'D', 'A', 'D', 'A', 'E'],
    "Mia":  ['B', 'B', 'E', 'C', 'A', 'D', 'A', 'D', 'A', 'E'],
    "Zia":  ['E', 'B', 'E', 'C', 'A', 'E', 'C', 'E', 'A', 'E']
}

# Key to the questions
model_answers = ['A', 'C', 'D', 'C', 'A', 'D', 'A', 'D', 'A', 'E']

# Grade all answers
for name in student_answers:
    # Grade for one student
    correctCount = 0
    for j in range(len(student_answers[name])):
        if student_answers[name][j] == model_answers[j]:
            correctCount += 1
    print(name, "achieved", correctCount, "correct answers.")</pr

What I have tried:

I have done this but as you can see it above i am not able to do it Please help me to do this code.