9/9 Help, what have I done wrong?


#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]
}

# Add your function below!
def average(numbers):
    total = sum(numbers)
    total = float(total)
    length = len(numbers)
    new = total / length
    return new
    
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(lloyd)

students = [lloyd , alice, tyler]

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

print get_class_average(students[lloyd, alice, tyler])

print get_letter_grade(get_average(students))

#2

there are problems in your function calls, lets start here:

print get_class_average(students[lloyd, alice, tyler])

lets look at what students is:

students = [lloyd , alice, tyler]

students is a list with your students, so in your get_letter_grade use students or make a new list with the students (i would pick the first), but don't combine it.

then the next one:

print get_letter_grade(get_average(students))

get_average() is designed for a single student, use `get_class_average instead, this will calculate the class average, and the convert it into a letter grade.


#3

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