8. Part of the whole

#1

Can someone tell me why I'm getting this error when I try to run this code?

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

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 = 0
total = sum(numbers)
total = float(total)

def get_average(student):
homework = average(student["homework"])
quizzes = average(student["quizzes"])
tests = average(student["tests"])

homeworkAVG = .10 * homework
quizzesAVG = .30 * quizzes
testsAVG = .60 * tests

return homeworkAVG + quizzesAVG + testsAVG

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

here..

results.append(get_average(students))

You're trying to append students (a list) to results but your iteration variable is student?

#3

Ohh! I completely missed that. For some reason I was thinking about the actual students list instead of the actual iteration variable. I should have been able to pick that up. Thanks for the clarification!

#4

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