Student becomes the teacher: Part of the Whole - Error get_class_average([alice]) should return a number


#1



https://www.codecademy.com/courses/python-beginner-en-qzsCL/1/4?curriculum_id=4f89dab3d788890003000096


Error: get_class_average([alice]) should return a number

I've seen a lot of posts with similar errors but still haven't been able to understand what's wrong, I think I'm overlooking something.
Any help would be greatly appreciated, this has taken up my whole morning lol
thanks!!


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]
}


def average(numbers):
    total = sum(numbers) 
    total = float(total) / len(numbers) 
    return total
    
def get_average(student):
    homework = average(student["homework"])
    quizzes = average(student["quizzes"])
    tests = average(student["tests"])
    return 0.1*homework + 0.3*quizzes + 0.6*tests
    
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 (get_letter_grade(get_average(lloyd)))

def get_class_average(students):
    results = []
    for student in students:
        results.append(get_average(student))
    return results


#2

I might be wrong, but the way I understand it your get_class_average function returns a list containing the different grades of all students. The way I interpret the instructions, you want to take these grades, average them and then return a single averaged number.

So simply run your results through your average function and return that instead.


#3

@captainwater is correct, Your results variable is just a list and to find the average ,you need to use average() function on results list while you return it.


#4

Thanks so much that fixed it!


#5

Thank you don't know how I overlooked that!


#6

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