# Student becomes the teacher error message unsupported operand type(s) for +: 'int' and 'str'

#1

<Below this line, add a link to the EXACT exercise that you are stuck at.>

<In what way does your code behave incorrectly? Include ALL error messages.>
Every time I try to run this code, codecademy returns this error message:

Oops, try again. get_average(alice) raised the following error: unsupported operand type(s) for +: ‘int’ and ‘str’

I am trying to understand why this isn’t working. My code is exactly the same as the beginning code they give for the next assignment.
<What do you expect to happen instead?>

```python

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)

def get_average(student):
homework = average(“homework”)
quizzes = average(“quizzes”)
tests = average(“tests”)
return 0.1 * homework + 0.3 * quizzes + 0.6 * tests

``<do not remove the three backticks above>``

#2

this is the error

you wanna calculate the average homework of all students , not the average of string ( “homework”)

#3

the code should be
def get_average(student):
homework = average(student[“homework”])
quizzes = average(student[“quizzes”])
tests = average(student[“tests”])