- Sending a Letter

Traceback (most recent call last):

File "python", line 42, in

File "python", line 27, in get_average

File "python", line 24, in average

ZeroDivisionError: float division by zero

It didnt pop up in previous exercises, and I cant figure it out

```
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"])*.1
quizzes=average(student["quizzes"])*.3
tests=average(student["tests"])*.6
return homework+quizzes+tests
def get_letter_grade(score):
if score >= 90:
return "A"
elif score >= 80:
return "B"
elif score>=70:
return "C"
elif score>=60:
return "D"
else:
return "F"
print get_letter_grade(get_average(lloyed))
```