I'm beginner and apparently need someone's help

https://www.codecademy.com/en/courses/python-beginner-en-qzsCL/1/4?curriculum_id=4f89dab3d788890003000096

Here's my coding

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]

}

"""

h = 97.5

"""

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)

return float(total) / len(numbers)

# weighed average function definition

def get_average(student):

homework = average(student["homework"])

quizzes = average(student["quizzes"])

tests = average(student["tests"])

return float(homework * 0.1 + quizzes * 0.3 + tests * 0.6)

# get grade function definition from score

def get_letter_grade(score):

if score >= 90.0:

return "A"

elif score < 90.0 and score >= 80.0:

return "B"

elif score < 80.0 and score >= 70.0:

return "C"

elif score < 70.0 and score >= 60.0:

return "D"

else:

return "F"

# get class average function definition from each students average

results = []

classes = [lloyd, alice, tyler]

def get_class_average(student):

for student in classes:

result = get_average(student)

results.append(result)

return average(results)

get_class_average(classes)

This is my error message

Oops, try again. get_class_average([alice]) returned 83.8666666667 instead of 91.15 as expected

Would you tell me what I missed?

`Replace this line with your code.`