Sending a Letter Please help much confusion


#1

https://www.codecademy.com/courses/learn-python/lessons/student-becomes-the-teacher/exercises/sending-a-letter?action=lesson_resume

The error message is in the code editor only. The message says: “get_letter_grade(59) returned ‘false’ instead of ‘F’ as expected.”

I calculated the grade for Lloyd by hand, and I got 80.55. The right box does show a B, which is what I expected. Why is the code wrong?



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)
  result = total/len(numbers)
  return result

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 "false"

print get_letter_grade(get_average(lloyd))


#2

if the score is below is 60 "F" should be returned, not "false"


#3

Look at the else codeblock in get_letter_grade(). What is it returning? Then look at the error message.

You can try it yourself to view what is being returned from that test:

print get_letter_grade(59)

#4

Thank you. I should have caught such a simple error.


#5