Hi there,

Below is my code which is receiving this error, 'Oops, try again. get_class_average([alice]) resulted in an error: list indices must be integers, not str' and I cant seem to figure it out at all! I have looked at all the other posts but none seem to be resolving this error, this is my code;

Please help???

```
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]
# Add your function below!
def average(numbers):
total = float(sum(numbers)) / len(numbers)
return total
def get_average(students):
homework = average(student["homework"])
quizzes = average(student["quizzes"])
tests = average(student["tests"])
weighting = (homework*.1)+(quizzes*.3 )+(tests*.6)
return weighting
def get_class_average(students):
results =[]
for students in students:
results.append(get_average(students))
return average(results)
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"
```