# Part of the Whole error

#1

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

Cant seem to get this to go away.

``````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):
sum(numbers)
total = sum(numbers)
total = float(total)
result = total / len(numbers)
return result

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

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:
results.append(get_average(students))
return average(results)``````

#2

HI you should indent your return statement

``````...
for student in students:
results.append(get_average(students))
return average(results)``````

#4

I had the same problem: I solved it by using the indents as shown above AND changing students to student in the results.append line, like this (student is in bold to show you what I mean):

results.append(get_average(student))

#5

Oops...yeah it's working now. Thanks for the help.

#6

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