8/9 Part of the Whole Help


#1

My code:

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): 
    total = sum(numbers)
    total = float(total)
    total = total / len(numbers)
    return total
    
def get_average(student):
    homework = average(student["homework"])
    quizzes = average(student["quizzes"])
    tests = average(student["tests"])
    
    homework = homework * .1 
    quizzes = quizzes * .3 
    tests = tests * .6 
    
    total = homework + quizzes + tests
    return total

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))

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

Which gets me

Oops, try again. get_class_average([alice, lloyd]) returned 91.15 instead of 85.85 as expected


#2

Too much indentation. The loop is not permitted to complete running. Back off this line by four spaces. It will then pass.


#3

Thanks! Worked! Funny how such a small mistake can go overseen


#4

Why this doesnt work?
def get_class_average(students):
result = []
for student in students:
result.append(get_average(student))
result = average(result)
return result

Oops, try again.
get_class_average([alice, lloyd]) resulted in an error: 'float' object has no attribute 'append'

But when I changed as follow, it works. Dont know the reason, please help.
def get_class_average(students):
result = []
for student in students:
result.append(get_average(student))
return average(result)