Class Average in Python

script.py

# 1. Define a function called get_class_average that has one argument students. You can expect students to be a list containing your three students.
# 2. First, make an empty list called results.
# 3. For each student item in the class list, calculate get_average(student) and then call results.append() with that result.
# 4. Finally, return the result of calling average() with results.

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):
    sum(numbers)
    total = sum(numbers)
    total = float(total) / len(numbers)
    return total
    
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):
   # score = 0
    if score >= 90 :
        return "A"
    elif score >= 80 :
        return "B"
    elif score >= 70 :
        return "C"
    elif score >= 60 :
        return "D"
    else:
        return "F"
        
get_letter_grade(get_average(lloyd))

# Class Average starts here
def get_class_average(students):
    students = ['lloyd', 'alice', 'tyler']
    results = [""]
    for student in students :
        class_average = results.append(get_average(student))
        #results.append(student)
        return class_average

students = {
   'llyod': {
       "homework": [90.0, 97.0, 75.0, 92.0],
       "quizzes": [88.0, 40.0, 94.0],
       "tests": [75.0, 90.0]
   },
   'alice': {
       "homework": [100.0, 92.0, 98.0, 100.0],
       "quizzes": [82.0, 83.0, 91.0],
       "tests": [89.0, 97.0]
   	},
   	'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):
   sum(numbers)
   total = sum(numbers)
   total = float(total) / len(numbers)
   return total

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_class_average(students):
   results = list()
   for student in students.itervalues():
       results.append(get_average(student))
   return results

print(get_class_average(students))