Can anyone explain why I am getting none in output? this is the question from hackerrank (magic square number) please explain?

def formingMagicSquare(s):
    pre = [
            [[8, 1, 6], [3, 5, 7], [4, 9, 2]],
            [[6, 1, 8], [7, 5, 3], [2, 9, 4]],
            [[4, 9, 2], [3, 5, 7], [8, 1, 6]],
            [[2, 9, 4], [7, 5, 3], [6, 1, 8]], 
            [[8, 3, 4], [1, 5, 9], [6, 7, 2]],
            [[4, 3, 8], [9, 5, 1], [2, 7, 6]], 
            [[6, 7, 2], [1, 5, 9], [8, 3, 4]], 
            [[2, 7, 6], [9, 5, 1], [4, 3, 8]],
            ]

    def evaluate(s):
        totals = []
        for p in pre:
            total = 0
            for p_row, s_row in zip(p, s):
                for i, j in zip(p_row, s_row):
                    total += max([i, j]) - min([i, j])
            totals.append(total)
        return print(min(totals))

the output of print() is None so you are returning None


I’ve edited your post for readability. When you enter a code block into a forum post, please precede it with a separate line of three backticks and follow it with a separate line of three backticks to make it easier to read.

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