This code is returning "Oops, try again. get_class_average([alice]) resulted in an error: string indices must be integers, not str", and I can't figure out why


#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"])
quizzes = average(student["quizzes"])
tests = average(student["tests"])
total = (homework * 0.1) + (quizzes * 0.3) + (tests * 0.6)
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 "class":
get_average(student)
results.append()
return average(results)
'''


#2

Use the parameter,

for student in students:

#3

"Oops, try again. get_class_average([alice]) resulted in an error: append() takes exactly one argument (0 given)"


#4

Pass the first line into the append function...

 results.append(get_average(student))

#5

I'm having the exact same problem.
Here is 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
print total

def get_average(student):

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

def get_class_average(students):

students = [lloyd, alice, tyler]
results = []
for student in students:
    results.append(get_average(student))
    return results

#6

Set this list outside of the function so the lesson checker can pass in what it wants.


#7

Still the same error. Thx anyway!


#8

Be sure this is not inside a loop block.


#9

I just added average() to the return line and it works!!!

If anyone is having the same problem here is the working code:

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


#18