132-36. 有效的数独

判断一个 9x9 的数独是否有效。只需要根据以下规则，验证已经填入的数字是否有效即可。(第一个我写的,暴力匹配,脑子不够直接暴力来.)
class Solution(object):
    def isValidSudoku2(self, board):
        """
        :type board: List[List[str]]
        :rtype: bool
        """
        point_list = [[1, 1], [1, 4], [1, 7],
                      [4, 1], [4, 4], [4, 7],
                      [7, 1], [7, 4], [7, 7]]

        for i in range(9):
            # 处理横向
            for j in range(1, 10):
                if board[i].count(str(j)) > 1:
                    return False

            column_list = []
            for j in range(9):
                column_list.append(board[j][i])
            print(column_list.count(str(5)))
            for k in range(1, 10):
                if column_list.count(str(k)) > 1:
                    return False

            point = point_list[i]
            column_list2 = []
            column_list2.append(board[point[0]][point[1]])
            column_list2.append(board[point[0]-1][point[1]])
            column_list2.append(board[point[0]+1][point[1]])
            column_list2.append(board[point[0]][point[1]-1])
            column_list2.append(board[point[0]][point[1]+1])
            column_list2.append(board[point[0]+1][point[1]-1])
            column_list2.append(board[point[0]-1][point[1]+1])
            column_list2.append(board[point[0]+1][point[1]+1])
            column_list2.append(board[point[0]-1][point[1]-1])
            for m in range(1, 10):
                if column_list2.count(str(m)) > 1:
                    return False
        return True

    def isValidSudoku(self, board):
        hash_row = [{} for i in range(9)]
        hash_coloum = [{} for i in range(9)]
        hash_box = [{} for i in range(9)]
        for i in range(9):
            for j in range(9):
                if board[i][j] == '.':
                    pass
                elif board[i][j] in hash_row[i]:
                    return False
                elif board[i][j] in hash_coloum[j]:
                    return False
                elif board[i][j] in hash_box[int(j / 3 + (i / 3 * 3))]:
                    return False
                else:
                    hash_row[i][board[i][j]] = 1
                    hash_coloum[j][board[i][j]] = 1
                    hash_box[int(j / 3 + (i / 3 * 3))][board[i][j]] = 1
        return True


if __name__ == '__main__':
    s1 = Solution()
    board = [[".",".","4",".",".",".","6","3","."],
             [".",".",".",".",".",".",".",".","."],
             ["5",".",".",".",".",".",".","9","."],
             [".",".",".","5","6",".",".",".","."],
             ["4",".","3",".",".",".",".",".","1"],
             [".",".",".","7",".",".",".",".","."],
             [".",".",".","5",".",".",".",".","."],
             [".",".",".",".",".",".",".",".","."],
             [".",".",".",".",".",".",".",".","."]]

    print(s1.isValidSudoku(board))