Just Weight and See


#1


https://www.codecademy.com/courses/python-beginner-en-qzsCL/1/2?curriculum_id=4f89dab3d788890003000096

get_average(alice) returned None instead of the expected 91.15

I don't get why that error message appears. Can someone please help me out with this?

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]
}

# Add your function below!
def average(numbers):
    total = sum(numbers)
    total = float(total)
    res = total / len(numbers)
    return res



def get_average(student):
    homework = average(student["homework"])
    quizzes = average(student["quizzes"])
    tests = average(student["tests"])
    homework * 0,1 + quizzes * 0,3 + tests * 0,6


#2

Hi @qgloaf,

The final line in your get_average function is ...

homework * 0,1 + quizzes * 0,3 + tests * 0,6

The function has no return statement.

Replace all the commas in that expression with decimal points, and return the result. With the commas, the expression evaluates to a tuple of three numbers rather than to a single number.


#3

...Ah, thank you. Gotta get used to decimal points being . instead of , :smiley:


#4