Error in 8. Part Of The Whole


#1



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


The error message: Oops, try again. get_class_average([alice]) resulted in an error: list indices must be integers, not str

What's wrong with my code?


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)
    return total/len(numbers)
def get_average(student):
    homework=average(student["homework"])
    quizzes=average(student["quizzes"])
    tests=average(student["tests"])
    homework=homework*0.1
    quizzes=quizzes*0.3
    tests=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 students:
        results.append(get_average(student))
    return get_average(results)


#2

You're yet to create the students list for which you looped for student.

students = [lloyd, alice, tyler]

#3

just did that, still have the same error...


#4

And you created the list outside the function and still have the error?

Please see below:

students = [lloyd, alice, tyler]

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

#5

copied your code and it worked, thanks!


#6

Okay, and I hope you did understand it.


#7

Is there a way to make he list with code insted of typing it?


#9

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