**Below this line, add a link to the EXACT exercise that you are stuck at**

'**In what way does your code behave incorrectly? Include ALL error messages.**'

Traceback (most recent call last):

File "python", line 63, in

File "python", line 39, in get_letter_grade

File "python", line 30, in get_average

TypeError: 'float' object has no attribute '**getitem**'

'**What do you expect to happen instead?**'

I get the class average, but it will not give me the proper letter grade. It gives me a weird trace back problem

```
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)
total = total/len(numbers)
return total
def get_average(student):
homework = average(student["homework"])
quizzes = average(student["quizzes"])
tests = average(student["tests"])
summ = 0.1*homework + 0.3*quizzes + 0.6*tests
return summ
def get_letter_grade(student):
score = get_average(student)
if score >= 90:
return "A"
elif score >= 80 :
return "B"
elif score >= 70:
return "C"
elif score >= 60:
return"D"
else:
return "F"
students = [lloyd, alice, tyler]
def get_class_average(students):
results = []
for item in students:
new_average = get_average(item)
results.append(new_average)
return average(results)
print get_class_average([lloyd, alice, tyler])
print get_letter_grade(get_class_average([lloyd, alice, tyler]))
```