I'm unsure as to what the problem is:

I've tried this several different ways and I still get the error that pops up in the picture above.

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))

return total / len(numbers)

def get_average(student):

homework = average(student["homework"])

quizzes = average(student["quizzes"])

tests = average(student["tests"])

`return homework*0.10 + quizzes*0.30 + tests*0.60`

def get_letter_grade(score):

if score >= 90:

print "A"

elif score >= 80 and score < 90:

print "B"

elif score >= 70 and score < 80:

print "C"

elif score >= 60 and score < 70:

print "D"

else:

print "F"

def get_class_average(students):

result = []

for key in students:

result.append(get_average(key))

```
print average(result)
get_letter_grade(average(result))
return average(result)
```

get_class_average(students)