# Oops, try again. get_class_average([alice]) returned 80.55 instead of 91.15 as expected

#1

I have a question referring to the "Part of the Whole" in the exercise "Student Becomes the Teacher". I'm supposed to get the average mark of the class. However, I keep taking the error referred in the title. I've seen that there are various persons asking about the same problem but I still don't have a clear idea about why my code is failing.

``````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)
def get_average(student):
homework = average(student['homework'])
quizzes = average(student['quizzes'])
tests = average(student['tests'])
return 0.1 * homework + 0.3 * quizzes + 0.60 * tests
if score >= 90:
return "A"
elif score >= 80:
return 'B'
elif score >= 70:
return 'C'
elif score >= 60:
return 'D'
else:
return 'F'

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

#2

``    for singular in plural:``

As in, `student in students`.

The second line can be removed. It is not doing anything.

#3

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