Python Student becomes the Teacher 8/9


#1

Hello, I am stuck with my code - constantly getting an error message :frowning: I checked the forums for the problem, but I still can’t figure out what the problem could be. Could someone please help?

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]
}

# Add your function below!
def average(numbers):
  total = sum(numbers)
  total = float(total)
  return 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 + 0.6 * 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 "Lloyd: ",get_letter_grade(get_average(lloyd))
print "Alice: ",get_letter_grade(get_average(alice))
print "Tyler: ",get_letter_grade(get_average(tyler))

students = [lloyd, alice, tyler]

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

Error message:
get_class_average([alice, lloyd]) returned 91.15 instead of 85.85 as expected


#2

Here:

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

A function ends the moment a return key is reached. The return statement should therefore be placed outside the for loop (on the same indentation level as the for statement itself).


#3

Thank you very much. After 2 days I can finally move on :grinning:


#4

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