8. Part of the whole


#1


Can someone tell me why I'm getting this error when I try to run this code?

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


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 = 0
    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"])
    
    homeworkAVG = .10 * homework
    quizzesAVG = .30 * quizzes
    testsAVG = .60 * tests
    
    return homeworkAVG + quizzesAVG + testsAVG
    
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(lloyd))  

students = [lloyd, alice, tyler]

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


#2

here..

results.append(get_average(students))

You're trying to append students (a list) to results but your iteration variable is student?


#3

Ohh! I completely missed that. For some reason I was thinking about the actual students list instead of the actual iteration variable. I should have been able to pick that up. Thanks for the clarification!


#4

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