Student Becomes the Teacher: How is everybody doing?


#1

https://www.codecademy.com/courses/python-beginner-en-qzsCL/1/5?curriculum_id=4f89dab3d788890003000096

Oops, try again. One of the following is missing or broken when we tried to use it: alice, lloyd, tyler, students, get_class_average, get_letter_grade

Hello! I get the following printed:
83.8666666667
B
None
but for some reason I still get that pesky error. My code is the same as the last exercise, I only added the last 3 lines. It prints the correct values and I have no clue where sth went wrong. Thank you for your help in advance!

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)
    total /= len(numbers)
    return total

def get_average(student):
    homework = average(student["homework"])
    quizzes = average(student["quizzes"])
    tests = average(student["tests"])
    wavg = (float(homework)*0.1 + float(quizzes)*0.3 + float(tests)*0.6)
    return wavg

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"


students=[alice, lloyd, tyler]

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

average=get_class_average(students)

print average
print get_letter_grade(average)

#2

I've been getting the same error and I think its just the program.


#3

Omg I thought someone posted a solution :frowning: I've been trying to get past this and Im stuck! So excited about this course I actually wake up in the morning waiting for a response!


#4

Hello the python learners,

I'm facing a similar situation, and I added some 'debug' print intructions in order to check what's wrong with my code and .... I'm still blind

Here are the detailed logs:
get_average: Lloyd 80.55
1 {'quizzes': [88.0, 40.0, 94.0], 'tests': [75.0, 90.0], 'name': 'Lloyd', 'homework': [90.0, 97.0, 75.0, 92.0]} [80.55]

get_average: Alice 91.15
2 {'quizzes': [82.0, 83.0, 91.0], 'tests': [89.0, 97.0], 'name': 'Alice', 'homework': [100.0, 92.0, 98.0, 100.0]} [80.55, 91.14999999999999]

get_average: Tyler 79.9
3 {'quizzes': [0.0, 75.0, 78.0], 'tests': [100.0, 100.0], 'name': 'Tyler', 'homework': [0.0, 87.0, 75.0, 22.0]} [80.55, 91.14999999999999, 79.9]

score of the class: 83.8666666667
grade of the class: B


Stuck with the error :( with lesson 9
#5

I think it didn't work because you assigned get_class_average(students) to the variable "average" (even though I agree your code is much cleaner). Doing exactly as the instructions specify will help you clear this step!

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)
    average = total / len(numbers)
    return average
    
def get_average(student):
    homework = average(student["homework"])
    quizzes = average(student["quizzes"])
    tests = average(student["tests"])
    student_average = .10*homework + .30*quizzes + .60*tests
    return student_average
    
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))

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))

How is every body doing?
#6

I wrote my code like you, but still shows the error like:
Traceback (most recent call last):
File "python", line 53, in
File "python", line 27, in get_average
TypeError: list indices must be integers, not str.

How can I correct it? Please help me


#8

But this-- following your code-- does not work

and this is the error!! Thanks beforehand!

Error:
Oops, try again. One of the following is missing or broken when we tried to use it: alice, lloyd, tyler, students, get_class_average, get_letter_grade

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(sum(numbers))
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 get_letter_grade(get_average(llyod))

def get_class_average(students):
results = []
for student in students:
get_average(student)
results.append(get_average(student))
return average(results)
students = [lloyd, alice, tyler]
print get_class_average(students)