# Part of a Whole returning a wrong number

#1

I am stuck on Part of a Whole.

I keep getting the error message: "get_class_average([alice]) returned 83.8666666667 instead of 91.15 as expected "

I expect to get the message: "Congratulations, you finished this course."

``````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(n):
total = sum(n)
aver  = float(total) / len(n)
return aver
def get_average(student):
homework = average(student["homework"])
quizzes = average(student["quizzes"])
tests = average(student["tests"])
wh = homework * 0.10
wq = quizzes * 0.30
wt = tests * 0.60
sum = wh + wq + wt
return sum
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"
result = get_average(lloyd)
def get_class_average(s):
results = []
for student in students:
results.append(get_average(student))
return average(results)``````

#2

here:

``for student in students:``

why loop over `students`?

this has several problems: it only works for a class of 3 students, not 1 or 2 students
the argument supplied at function call (list with 1, 2 or 3 students) is irrilevant because you never use the function parameter

#3

Wait... I found that my argument and my loop had different variables. Silly me.

#4

easy made mistake, good you figured it out

#5

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