# Part of the whole. Help!

#1

Oops, try again. get_class_average([alice]) resulted in an error: list indices must be integers, not str

``````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)

def get_average(student):
homework = average(student["homework"])
quizzes = average(student["quizzes"])
tests = average(student["tests"])
weights = homework * 10/100 + quizzes * 30/100 + tests * 60/100
return weights

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(student):
students = [lloyd, alice, tyler]
results = []
for item in students:
results.append(get_average(student))
return average(results)``````

#2

look at your parentheses on the line above

#3

My fault sorry.. but i get this now
Oops, try again. get_class_average([alice]) resulted in an error: list indices must be integers, not str

#4

first off, don't overwrite your function parameter

secondly, you loop over `students`, then you should append the get average of iterator to results. So either change item to student or vice versa

#5

I know my provlem now. Thanks verry much codecademy moderator.

#6