I can't figure out what I am doing wrong..

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):

sum(numbers)

total = sum(numbers)

total = float(total)

total = float(total) / len(numbers)

return total

def get_average(student):

homework = average(student["homework"])

quizzes = quizzes(student["quizzes"])

tests = tests(student["tests"])

get_average = homework * 0.1 + quizzes * 0.3 + tests * 0.6

return get_average

Its showing this error!!!!

Oops, try again. get_average(alice) raised the following error: local variable 'quizzes' referenced before assignment

`Replace this line with your code.`