Getting ERROR message making me confused!


#1

Not sure why I am getting this error Oops, try again. Did you remember to print the average of the class? It looks like "None" wasn't printed. thou I have given print statements.

lloyd = {
    "name": "Lloyd",
    "homework": [90.0, 97.0, 75.0, 92.0],
    "quizzes": [88.0, 40.0, 94.0],
    "tests": [75.0, 90.0]
}
alice = {
    "name": "Alice",
    "homework": [100.0, 92.0, 98.0, 100.0],
    "quizzes": [82.0, 83.0, 91.0],
    "tests": [89.0, 97.0]
}
tyler = {
    "name": "Tyler",
    "homework": [ 0.0, 87.0, 75.0, 22.0],
    "quizzes": [ 0.0, 75.0, 78.0],
    "tests": [100.0, 100.0]
}

students = [ lloyd, alice, tyler]

def average(numbers):
        total = sum(numbers)
    total = float(total)
    l = len(numbers)
    return total / l

# Add your function below!
def get_average(student):
    homework = average(student['homework']) * 0.1
    quiz = average(student["quizzes"]) * 0.3
    test = average(student["tests"]) * 0.6
    return homework + quiz + test

def get_letter_grade(score):
        if score >= 90:
        print "A"
    elif score >= 80:
        print "B"
        print score
    elif score >= 70:
        print "C"
    elif score >= 60:
        print "D"
    else:
        print "F"

def get_class_average(students):
    results = []
    for stud in students:
        results.append(get_average(stud))
        print stud['name']
        print stud['homework']
        print stud['quizzes']
        print stud['tests']
        print get_average(stud)
    print results
    print "class average : ",average(results)
    get_letter_grade(average(results))

get_class_average(students)

#2

Looks to me like you are printing in the function and not returning a value to get printed.

Example::

return get_letter_grade(average(results))

#3

Had the same issue.

Basically in every function you should be returning a result NOT printing it

Then call the functions outside the functions themselves and print them
example:

def get_letter_grade(score):
     if score >= 90:
        return "A"
    elif score >= 80:
        return "B"
    elif score >= 70:
        return "C"
    elif score >= 60:
        return "D"
    else:
        return "F"




print def get_letter_grade(score)