Student Becomes the Teacher - Part of the Whole

#1

6: Student Becomes the Teacher

8: Part of the Whole

Oops, try again. get_class_average([alice]) resulted in an error: unsupported operand type(s) for +: 'int' and 'NoneType'

Get the average for each student and then calculate the average of those averages.

``````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)

def get_average(student):
homework = average(student["homework"])
quizzes = average(student["quizzes"])
tests = average(student["tests"])
return

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 student in students:
results.append(get_average(student))
return average(results)``````

#2

This function is incomplete. Go back to the lesson on weighted averages and read the instructions carefully. Complete this function and the problem should be fixed.

#3

Thanks

def get_average(student):
homework = average(student["homework"])
quizzes = average(student["quizzes"])
tests = average(student["tests"])
return (0.1*homework + 0.3*quizzes + 0.6*tests)

#4

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