Part of the whole


#1

Hi, this 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]
}

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 homework * 0.1 + quizzes * 0.3 + tests * 0.6

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

this is the error message that I’m getting: get_class_average([alice]) resulted in an error: global name ‘students’ is not defined

What am I doing wrong here? please help!


#2

Hi @emileae,

The get_class_average function has a parameter named class_list. However, you are instead attempting to iterate through students here …

  for student in students:

Your posted code is not formatted, therefore we cannot conveniently view its indentation in order to make sure it is correct.


#3

Oke this is my formatted 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 homework * 0.1 + quizzes * 0.3 + tests * 0.6

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

this also doesnt work ?


#4

Thanks for the formatting.

There are several issues to consider here.

Take a close look at the get_class_average function.

You have students in this statement …

    results.append(get_average(students))

Is that what you should be passing to the get_average function?

Is this statement indented correctly?

    return average(results)

As you have it now, it is part of the for loop.

Also check the work that you did in Exercise 3: Put It Together. Is it still present in your code in the current exercise?


#5

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