I get : "Oops, try again. get_average(alice) raised the following error: sum expected at most 2 arguments, got 3" as error message.

I don't understand where and how I got it wrong. Please help me

```
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(number):
total = sum(number)
total = float(total)
return total/len(number)
def get_average(student):
homework = average(student["homework"])
quizzes = average(student["quizzes"])
tests = average(student["tests"])
homework = 0.1*average(student["homework"])
quizzes = 0.3*average(student["quizzes"])
tests = 0.6*average(student["tests"])
grade = sum(homework, quizzes, tests)
return grade
```