# Error in 8. Part Of The Whole

#1

The error message: Oops, try again. get_class_average([alice]) resulted in an error: list indices must be integers, not str

What's wrong with my 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]
}

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

#2

You're yet to create the students list for which you looped for student.

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

#3

just did that, still have the same error...

#4

And you created the list outside the function and still have the error?

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

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

#5

copied your code and it worked, thanks!

#6

Okay, and I hope you did understand it.

#7

Is there a way to make he list with code insted of typing it?

#9

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