Hi guys,

Been trying to faff this one out. It seems to work for the most part in Atom, but when I submit it, the website barks "

Oops, try again. get_class_average([alice]) should return a number" at me.

Looks like it is saying that no number is being returned. Thanks in advance for your input.

```
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):
# takes a list of scores and creates an average
total = (sum(numbers))
total = total / len(numbers)
return total
def get_average(student):
# calculates a weighted average for each student based on homework, quizzes and tests
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):
# spits out a letter grade for each students, e.g. 90% = A
if score >= 90:
return "A"
elif score >= 80:
return "B"
elif score >= 70:
return "C"
elif score >= 60:
return "D"
else:
return "F"
students = [ lloyd, alice, tyler, ]
def get_class_average(students):
results = []
for student in students:
return (results.append(get_average(student)))
return average(results)
get_class_average([alice])
```