I don't know where the problem lies? please check, it's 9/9


#1



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]
}
def average(numbers):
    sum(numbers)
    total = sum(numbers)
    total = float(total)
    avg = total/len(numbers)
    return avg
def get_average(student):
    homework = average(student["homework"])
    quizzes = average(student["quizzes"])
    tests = average(student["tests"])
    return 0.1 * homework + 0.3 * quizzes + 0.6 * 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 average(results)
students = ["lloyd","alice","tyler"]
print get_class_average(students)
print get_letter_grade(get_class_average(students))


#2

hint**
Why you put names of students inside quotes?
"lloyd" , "alice" , "tyler" ?


#3

Further hint**
students = ["lloyd","alice","tyler"]


#4

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