8.Part of the Whole syntax error


#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):
    total = sum(numbers)
    total = float(total)
    total = total / len(numbers)
    return total
    
def get_average(student):
    homework = average(student["homework"]) * 0.1
    tests = average(student["tests"]) * 0.6
    quizzes = average(student["quizzes"]) * 0.3
    return homework + tests + quizzes
    
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'
        
students =[lloyd,alice,tyler]
        
def get_class_average(students):
    results = []
    for person in students:
        results.append(get_average(person)
    return average(results)
        
print get_letter_grade(get_average(lloyd))

I keep getting the following syntax error in my get_class_average referencing the return. What am I doing wrong with it?

  File "python", line 50
    return average(results)
         ^
SyntaxError: invalid syntax

#2

Altough i do not know python very well, i guess there is a bracket missing from the "results.append" line.

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

#3

That was it. Thank you.