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))

total = total/len(numbers)

return total

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

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 (get_average(lloyd))

def get_class_average (students):

results = []

for student in students:

results.append(get_average (student))

return average(results)

average = get_class_average ([lloyd, alice, tyler])

print (average)

print (get_letter_grade (average))