I need help with my code. I seem to be getting this error but I am not sure what I am doing wrong:

get_average(alice) raised the following error: list indices must be integers, not str

The following is my code:

```
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)
return total / len(numbers)
def get_average(student):
student = ["lloyd", "alice", "tyler"]
homework = average(student["homework"])
quizzes = average(student["quizzes"])
tests = average(student["tests"])
return ("homework" * .1) + ("quizzes" * .3) + ("tests" * .6)
```