# 8. Part of the Whole

#1

Still consider myself a novice. I'm not sure what I'm doing wrong, but I keep getting the error message "Oops, try again. get_class_average([alice]) should return a number." I've perused the Q&A for a while to find an answer to no avail. Any help would be great!

``````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 = float(sum(numbers))
result = total / len(numbers)
return result

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

print get_average(lloyd)

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

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

print get_class_average(students)``````

#2

Hi you don't need to return this line `return results.append(get_average(student))` remove `return` and it will works.

#3

Thank you! For some reason, I was thinking a `for` loop worked like a function.

#4