7. Variance: strange syntax error


#1


https://www.codecademy.com/courses/python-intermediate-en-7mgOa/2/1?curriculum_id=4f89dab3d788890003000096

Error message:

  File "python", line 23
    for score in scores:
                       ^
SyntaxError: invalid syntax

I am not sure why it is telling me that the : at the end of my for loop is invalid. What am I doing wrong?


grades = [100, 100, 90, 40, 80, 100, 85, 70, 90, 65, 90, 85, 50.5]

def print_grades(grades):
    for grade in grades:
        print grade

def grades_sum(grades):
    total = 0
    for grade in grades: 
        total += grade
    return total
    
def grades_average(grades):
    sum_of_grades = grades_sum(grades)
    average = sum_of_grades / float(len(grades))
    return average

def grades_variance(scores):
    average = grades_average(scores)
    variance = 0
    number_scores = float(len(scores)
    
    for score in scores:
        variance += (average - score) ** 2
    
    result = variance / number_scores
    return result

print grades_variance(grades)


#2

the line above:

number_scores = float(len(scores)

look at the number of opening and closing brackets, they don't match


#3

Thanks! For some reason I just didn't see that.