# 8. Part of the Whole (if you are looking for an answer to this step)

#1

I hope you find this helpful. This step took me for a while.

`````` 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 = float(sum(numbers))
return total/len(numbers)

student = [ lloyd, alice, tyler ]
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 80 <= score < 90:
return "B"
elif 70 <= score < 80:
return "C"
elif 60 <= score < 70:
return "D"
else :
return "F"

print get_letter_grade(get_average(lloyd))

students = [lloyd, alice, tyler]

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

#2

In the previous steps I never had to make those random lists, I got so far without them and it never occured to me I'd need them to pass this step

#3

``````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)
result=total/len(numbers)
return result

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"

get_letter_grade(get_average(lloyd))

students=[lloyd,alice,tyler]

def get_class_average(students):
result=[]
for student in students:
result.append(get_average(student))
return average(result)``````