```
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):
total=sum(numbers)
total=float(total)
total=total / len(numbers)
return total
print total
def get_average(student):
homework = average(student["homework"])
quizzes = average(student["quizzes"])
tests = average(student["tests"])
score = (0.1 * homework) + (0.3 * quizzes) + (0.6 * tests)
return score
print score
get_average
def get_letter_grade(score):
if score >= 90:
return "A"
print "A"
if score >= 80 and score < 90:
return "B"
print "B"
if score >= 70 and score < 80:
return "C"
print "C"
if score >= 60 and score < 70:
return "D"
print "D"
else:
return "F"
print "F"
get_letter_grade
def get_class_average(students):
results = []
for student in students:
average = get_average(student)
results.append(average)
print average(results)
```

No error in the output window (which is already confusing me as there are print commands everywhere) but the codeacademy error says, "get_class_average([alice]) resulted in an error: 'float' object is not callable".