9. How is everybody doing?


#1

Hey I've been looking trough the posts but I haven't seen a solution to my problem. Can anybody help?
Error:
Traceback (most recent call last):
File "python", line 57, in
File "python", line 28, in get_average
TypeError: 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]
}
students = [lloyd, alice, tyler]
# Add your function below!
def average(numbers):
    sum(numbers)
    total = sum(numbers)
    total = float(total)
    average = total / len(numbers)
    return average
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 float(homework) + float(quizzes) + float(tests)
def get_letter_grade(score):
    if (score >= 90):
        return "A"
        print "A"
    elif (score >= 80 and score < 90):
        return "B"
        print "B"
    elif (score >= 70 and score < 80):
        return "C"
        print "C"
    elif (score >= 60 and score < 70):
        return "D"
        print "D"
    else:
        return "F"
        print "F"
def get_class_average(students):
    results = []
    for students in students:
        results.append(get_average(students))
    return average(results)
print get_class_average([lloyd, alice, tyler])
print get_letter_grade(get_average(students))

#2

Just follow the instructions. None of this is asked for.


#3

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