8.Part of the Whole


#1



i think my code looks fine but it keeps giving an error i dont know how to fix:

get_class_average([alice]) resluted in an error: list indices must be integers, not str


I checked all posts about this exercise but I wasnt able to figure it out


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

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"
    print get_letter_grade(get_average(student))
    

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


#2

this line:

results.append(get_average(students))

you should append the average of each student to the list, not all students in one go, your get_average function can't handle that


#3

now get_class_average([alice]) returned 83.66666667 instead of 91.15


#4

can you post an updated version of your code? I implanted this change, and everything works fine.


#5

nvm I was pretty dumb but now it worked. Thank you!


#6

let me take a guess: the indent of return was wrong


#7

2 posts were split to a new topic: 8. part of a whole


#8

yes that was the problem xD


#9