Part of the Whole question


#1



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

Oops, try again. get_class_average([alice]) returned 83.8666666667 instead of 91.15 as expected

I went to the archive to see if anyone else had this issue and I read that if I keep the indent of the return(average) line as the same as the "for" statement, then I should be fine. I did so and I got the error message. Kinda lost right now.

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)
    total /= len(numbers)
    return total
    
def get_average(student):
    homework = average(student["homework"])
    quizzes = average(student["quizzes"])
    tests = average(student["tests"])
    return 0.1 * average(student["homework"]) + \
    0.3 * average(student["quizzes"]) + \
    0.6 * average(student["tests"])
    
def get_letter_grade(score):
    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(students):
    students = [lloyd, alice, tyler]
    results = []
    for student in students:
       results.append(get_average(student))
    return average(results)


#2

The first thing your function does is to overwrite the argument it receives

That would be like having a function called add, which ALWAYS returns 5, because it thinks 2 and 3 are the only numbers worth adding


#3

I'm not sure I understand what you're saying. Does that mean I have to get rid if the return average(results) line?


#4

What @ionatan means, is that you've already set homework, quizzes, and tests equal to their respective averages. Therefore, all you should really have to do is change this:

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

To this:

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

Also, just so you know, students doesn't need to be defined yet, so:

def get_class_average(students):
    students = [lloyd, alice, tyler] #Either remove this line, or comment it out.
    results = []
    for student in students:
       results.append(get_average(student))
    return average(results)

#5

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