```
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):
return (float)(sum(numbers))/len(numbers)
def get_average(student) :
homework = student["homework"]
quizzes= student["quizzes"]
tests=student["tests"]
return average(homework)*0.1 + average(tests)*0.6 + 0.3*average(quizzes)
def get_letter_grade(score) :
if type(score)==int or type(score)==float :
if score >= 90 : return "A"
elif score >= 80: return "B"
elif score >= 70: return "C"
elif score >= 60: return "D"
else : return "F"
print "%s" %get_letter_grade(get_average(lloyd))
def get_class_average (students) :
results = []
for student in students:
results.append(get_average(student))
return average(results)
print get_class_average([lloyd, alice,tyler])
print get_letter_grade( get_class_average([lloyd, alice,tyler]))
```

# Part 9/9 error : "One of the following is missing or broken.."

**codepro94429**#1

**stetim94**#3

in put it together you created a list with your students, this list is missing in your case

**system**#4

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