**error message :** Oops, try again. get_class_average([alice]) returned 83.8666666667 instead of 91.15 as expected

**Expected:** Finally, return the result of calling average() with results.

Code block**strong text**``python`

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]

}

def average(numbers):

return float(sum(numbers))/len(numbers)

def get_average(student):

homework = average(student['homework'])

quizzes = average(student['quizzes'])

tests = average(student['tests'])

return homework * 0.1 + quizzes * 0.3 + tests * 0.6

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'

def get_class_average(students):

students = [lloyd, alice, tyler]

results = []

for x in students:

results.append(get_average(x))

return average(results)

""

print get_average(lloyd) #80.55

print get_average(alice) #91.15

print get_average(tyler) #79.9

class_average = (get_average(lloyd) + get_average(alice) + get_average(tyler))/3

print class_average #83.87

""