# 8/9 part of a whole

#1

Same code but showing this error **"Oops, try again. getclass_average([alice]) resulted in an error: list indices must be integers, not str"**_

8/9 Part of the Whole - my code is not wrong
#3

line 52, you call `get_average()` with an argument of `students`, but students is a list, get_average is designed to calculate the average of a single student

#4

yeah thanx... i rectified my error

Now it shows "
Oops, try again. get_class_average([lloyd]) returned 91.15 instead of 80.55 as expected"

#5

can you post an updated version of your full code? Please copy paste it so we can run it rather then having to look at an image

#6

``````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=float(sum(numbers))
print total/len(numbers)

def get_average(student):
homework=average(student["homework"])
quizzes=average(student["quizzes"])
tests=average(student["tests"])
sum_avg=(0.1*homework)+(0.3*quizzes)+(0.6*tests)
return sum_avg

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"
get_average(tyler)

def get_class_average(students):
results=[]
for student in students:
results.append(get_average(alice))
return average(results)``````

#7

from the instructions:

calculate get_average(student) and then call results.append() with that result.

not sure why you calculate the average for alice, what if the class consist of lloyd? or lloyd and tyler?

#8

i didn't understand..what should i do?

#9

well, you need to calculate the average (get_average) of `student` and append it to results

#13

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