Part of a Whole returning a wrong number


#1



I am stuck on Part of a Whole.


I keep getting the error message: "get_class_average([alice]) returned 83.8666666667 instead of 91.15 as expected "


I expect to get the message: "Congratulations, you finished this course."


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(n):
    total = sum(n)
    aver  = float(total) / len(n)
    return aver
def get_average(student):
    homework = average(student["homework"])
    quizzes = average(student["quizzes"])
    tests = average(student["tests"])
    wh = homework * 0.10
    wq = quizzes * 0.30
    wt = tests * 0.60
    sum = wh + wq + wt
    return sum
def get_letter_grade(score):
    if score >= 90:
        return "A"
    elif score >= 80 and score < 90:
        return "B"
    elif score >= 70 and score < 80:
        return "C"
    elif score >= 60 and score < 70:
        return "D"
    else:
        return "F"
result = get_average(lloyd)
get_letter_grade(result)
def get_class_average(s):
    results = []
    for student in students:
        results.append(get_average(student))
    return average(results)


#2

here:

for student in students:

why loop over students?

this has several problems: it only works for a class of 3 students, not 1 or 2 students
the argument supplied at function call (list with 1, 2 or 3 students) is irrilevant because you never use the function parameter


#3

Wait... I found that my argument and my loop had different variables. Silly me.


#4

easy made mistake, good you figured it out :slight_smile:


#5

This topic was automatically closed 7 days after the last reply. New replies are no longer allowed.