Please Help with Code! Overlooked instructions?


#1



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


When I submit this code, it returns: Oops, try again. get_class_average([alice]) returned 83.8666666667 instead of 91.15 as expected.


I expected it to be the correct answer. I founded it rather odd that the sidebar said to use what seemed like a preexisting list, class, that I hadn't been asked to make before. Class also seemed to be a function, so I instead created a new list, class_list. Is that something that was overlooked, or was I supposed to put something like that into the code a while ago? Anyway, the only things I have changed about the code for Part 11 are the "def get_class_average" part at the very end at the class_list list. Please help!


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]
}

class_list = [lloyd, tyler, alice]

# Add your function below!

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

def get_average(student):
    homework = average(student["homework"]) * 0.1
    quizzes = average(student["quizzes"]) * 0.3
    tests = average(student["tests"]) * 0.6
    return homework + quizzes + 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):
    results = []
    for student in class_list:
        results.append(get_average(student))
    return average(results)


#2

your function should work for a class of any size (1, 2 or 3 students) supplied as argument on function call

Why do you not use the function parameter?


#3

I'm sorry, I'm not following you.


#4

where do i loose you?

I loose you so much you can't even answer a simple question:


#5

I'm sorry, I'm just fairly new at this. Where should I have used a function parameter?


#6

here:

def get_class_average(students):

you have a function parameter students but you don't use it anywhere in the function, so you don't do anything with the argument which is what the error message is telling:

def get_class_average(students):
    results = []
    for student in class_list:
        results.append(get_average(student))
    return average(results)

# function call
print get_class_average([alice])

the function always calculates the class average for 3 students, while we also want to be able to calculate the class average for 1 or 2 students


#7

So... do I not need the class_list thing at all?

Here are the sidebar instructions:

Define a function called getclass_average that has one argument students. You can expect students to be a list containing your three students._
First, make an empty list called results.
For each student item in the class list, calculate getaverage(student) and then call results.append() with that result._
Finally, return the result of calling average() with results.

It seemed, it my eyes, to expressly state that one needed a "class list" already created (with class highlighted in the original text), but I guess the student parameter works for that, right? It seems to me that that is somewhat misleading. What would it look like if that problem were corrected?


#8

no, you should use the function parameter instead

I didn't write the course, i am not going to discuss instructions. For you, its important to always question why you do something, like: i added a function parameter, should i use it and how? Think about what you are doing, don't take everything for granted from the instructions. Instructions won't be there forever


#9

It worked! Thank you very much! I still feel like the instructions are somewhat misleading though, but I do understand why it wasn't working now.


#10