How is Everybody doing? error


#1

Hi everybody.
I wrote this 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]
}
students=[lloyd, alice, tyler]

# Add your function below!
def average(numbers):
    total=sum(numbers)
    total=float(total)
    total=total/len(numbers)
    return total

def get_average(student):
    homework=average(student["homework"])
    quizzes=average(student["quizzes"])
    tests=average(student['tests'])
    homework=homework*10/100
    quizzes=quizzes*30/100
    tests=tests*60/100
    work=homework+quizzes+tests
    return work
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_average(lloyd))
def get_class_average(students):
    results=[]
    for student in students:
        results.append(get_average(student))
    return average(results)
print(get_class_average(students))

and the output is:

80.55
83.8666666667
None

the code was for the How is Everybody Doing? exercise but I have this "Oops, try again." error:


#2

@printcoder_eric: Could you post your code using

[code][/code]

so we can take a look at what you've done?
It could be the fact you didn't print the letter grade for the class's average, which should be a B, and such is not being shown at your screenshot.


#6

@g4be
Yes

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]
}
students=[lloyd, alice, tyler]
# Add your function below!
def average(numbers):
    total=sum(numbers)
    total=float(total)
    total=total/len(numbers)
    return total
def get_average(student):
    homework=average(student["homework"])
    quizzes=average(student["quizzes"])
    tests=average(student['tests'])
    homework=homework*10/100
    quizzes=quizzes*30/100
    tests=tests*60/100
    work=homework+quizzes+tests
    return work
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_average(lloyd))
def get_class_average(students):
    results=[]
    for student in students:
        results.append(get_average(student))
    return average(results)
print(get_class_average(students))

Also, to do the letter grade for the class, can I use:
print(get_letter_grade(get_class_average(students))?


#9

That should work, but for some reason it's not. But here's the new error:

and the output is:

File "python", line 55
    print(get_letter_grade(get_class_average(students))
                                                      ^
SyntaxError: invalid syntax

#10

Count the brackets... ( .. ( .. ( ... ) ) ?


#11

I am forgetting one, right?
(edited)
Yep