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 = 0.1*average(student["homework"])

quizzes = 0.3*average(student["quizzes"])

tests = 0.6*average(student["tests"])

total = homework + quizzes + tests

return total

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(lloyd))

def get_class_average(students):

students = [lloyd,alice,tyler]

results=[]

for item in students :

average= return get _average(student)

results.append(average)

return results

# it returns File "python", line 48

average= return get _average(student)

^

SyntaxError: invalid syntax.Some body help me with the correct code please.