# Student Becomes the Teacher - Just weight and see

#1

Oops, try again. get_average(alice) raised the following error: 'float' object is not iterable

``````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]
}

total = 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 sum(homework*.1 + quizzes*.3 + tests*.6)``````

I'm not sure why the float is not iterable, any help is much appreciated

#2

if we add a function call:

``print get_average(lloyd)``

we can see interpreter errors, which helps us pinpoint the problem

`sum()` is a built in function to calculate the sum of an iterable (like a list), in your case, you just have a bunch of numbers which you can add together with plus (`+`), no need to use `sum()`

#3

ok its fixed thank you, btw i like your troubleshooting tip to call the function and view the interpreter errors

``````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]
}

total = 0
def average(numbers):
total = sum(numbers)
total = float(total)
x = total / len(numbers)
return x