I am getting error

#1

Oops, try again. One of the following is missing or broken when we tried to use it: alice, lloyd, tyler, students, get_class_average, get_letter_grade

output should be correct. I think error in the last ten lines of code

``````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]
}

lis = [lloyd, alice, tyler]
def average(numbers):
total = float(sum(numbers))
return  total / len(numbers)
average([1,2,3])

def get_average(student):
homework = average(student["homework"]) * .10
quizzes = average(student["quizzes"]) * .30
tests = average(student["tests"]) * .60
return homework+tests+quizzes
get_average(lloyd)

if score >= 90:
return 'A'
elif score >= 80 and score <90:
return 'B'
elif score >= 70 and score <80:
return 'C'
elif score >= 60 and score <70:
return 'D'
else:
return 'F'

def get_class_average(students):
results = []
for s in students:
results.append(get_average(s))
return average(results)
print get_class_average(lis)

#2

here:

``lis = [lloyd, alice, tyler]``

this list should be called students, as explained in 3. put it together

#3

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