Problem at ex. 8


#1



8. Part of the whole


Error says: Oops, try again. get_class_average([alice]) resulted in an error: unsupported operand type(s) for +: 'int' and 'NoneType'


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]
}

# Add your function below!
def average(numbers):
    total = sum(numbers)
    total = float(total)
    return total / len(numbers)

def get_average(student):
    homework = average(student["homework"])
    quizzes = average(student["quizzes"])
    tests = average(student["tests"])
    sum_grades = homework * 0.1 + quizzes * 0.3 + tests * 0.6
    return 

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"

get_letter_grade(get_average(lloyd))

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


#2

You are returning northing in this line


#3

your get_average function doesn't return anything, it should should return sum_grades


#4

lol, didn't see that, thanks for responses


#5