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_varience(scores): average = grades_average(scores) varience = 0 for score in scores: varience += (average - score) ** 2 a = varience / float(len(scores) return a print grades_varience(grades) The error : File "python", line 24 return a ^ SyntaxError: invalid syntax what is wrong with my return????
Remove the float() method and it will work!
There is a problem here ...
a = varience / float(len(scores)
The parentheses are not closed.
Also note that Codecademy is expecting the function to be named
grades_variance, rather than
grades_varience. The correction needs to be made in several places. Use the spelling
variance instead of
varience for the name of the variable.
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