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]

}

students = [lloyd , alice , tyler]

# Add your function below!

def average(numbers):

total = sum(numbers)

total = float(total) / len(numbers)

return total

def get_average(students):

homework = student["homework"]

quizzes = student["quizzes"]

tests = student["tests"]

return 0.1 * average(homework) + 0.3 * average(quizzes) + 0.6 * average(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"

get_letter_grade(80)

def get_class_average(students):

results=[]

for student in students:

get_average(student)

results.append(get_average(student))

return average(results)

I have error like Oops, try again. get_class_average([alice]) resulted in an error: global name 'student' is not defined

pls help friends