Stuck on : How is everybody doing, getting the wrong Average and hence the wrong average letter grade.

'''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=(float(sum(numbers)))/len(numbers)

return total

def get_average(student):

homework=average(student["homework"])

quizzes=average(student["quizzes"])

tests=average(student["tests"])

return (homework*0.1)+(quizzes*0.3)+(tests*.60)

def get_letter_grade(score):

if score>=90:

return "A"

elif score >=80 and score<90:

return "B"

elif score >=70 and score<80:

return "C"

elif score>=60:

return "D"

else:

return "F"

student =[lloyd , alice , tyler]

def get_class_average(student):

results=[]

for i in student :

results.append(get_average(i))

`return average(results)`

print get_class_average(student)

print get_letter_grade(get_class_average(student))