showing error message of one of the following is missing or brokenwhen we tried to use it allice,lloyd,tyler,students,get_class_average,get_letter_grade

```
Replace this line with your 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):
term=sum(numbers)
total=float(term)
result=total/len(numbers)
return result
def get_average(student):
homework=average(student["homework"])
quizzes=average(student["quizzes"])
tests=average(student["tests"])
return 0.1*homework+0.3*quizzes+0.6*tests
print get_average(lloyd)
def get_letter_grade(score):
if score==90 or score>90:
return "A"
elif score==80 or score>80:
return "B"
elif score==70 or score>70:
return "C"
elif score==60 or score>60:
return "D"
else:
return "F"
def get_class_average(students):
results=[]
for student in students:
avgr=get_average(student)
results.append(avgr)
return average(results)
std=[lloyd,alice,tyler]
print get_class_average(std)
print get_letter_grade(get_class_average(std))
```