# What?Why it dosent return?

#1

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)
x = total /len(numbers)
return x
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
x = get_average(tyler)
print get_average(x)

i get error:Traceback (most recent call last):
File "python", line 33, in
File "python", line 27, in get_average
TypeError: 'float' object has no attribute 'getitem'

#2

Say more about what's happening here. What value do you think is being held by `x` after the top line? What happens when you try to put that value into the `get_average()` function? What kind of input is the `get_average()` function expecting you to send to it?

#3

I got it now...
d = tyler
x = get_average(d)
print x
or
x = get_average(tyler)
print x
Because
x = get_average(tyler)
print get_average(x)
Its the same as print get_average(get_average(tyler))
Thanks for the help!