# How is Everybody Doing?

#1

codeacademy give me green light to move on Congratulations, you've finished this course!, but python give me Error
the error is :
Traceback (most recent call last):
File "python", line 62, in
File "python", line 28, in get_average
TypeError: list indices must be integers, not str

i was expect it will work but it not

``````<html>
How is Everybody Doing?

<body>
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(number):
total = sum(number)
total = float(total)/len(number)

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

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(student):
result = []
for l in student:
t = get_average(l)
result.append(t)
return average(result)

students = [lloyd, alice, tyler]
print get_class_average(students)
for b in students:

</body>
</html>``````

#3

the problem is here:

``````for b in students:

get_average is designed to calculate the average for a student, not for multiply students at once. use `b` instead of students:

``````for b in students: