8. Part of the Whole


#1



I keep getting this error message "Oops, try again. get_class_average([alice]) resulted in an error: list indices must be integers, not str"


I've gone through the other forum posts and based on those, my code looks good but I keep getting this error message!
Hoping a fresh set of eyes will help.


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)
    return float(total) / len(numbers)

def get_average(student):
    homework = average(student['homework'])
    quizzes = average(student['quizzes'])
    tests = average(student['tests'])
    return .10 * homework + \
    .30 * quizzes + \
    .60 * 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'
        
print get_letter_grade(lloyd)
print get_letter_grade(alice)
print get_letter_grade(tyler)

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


#2

Your iterator variable is item but you are passing student to get_average().


#3

so whats the error pls :smiley:


#5

Examine the opening line of your for statement. Now check the argument.

item  !== student

#6

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