tate yoko Yokosen list y x tate = 3 Yokosen 0, 2, 1, 2, 1 yoko = 4 i y number , 1 1 1 + True yoko 1 x = 1 True <= 0 x 0 tate True == 0 Yokosen 3 y 0 x "┣", end="" "┫", end="" x = 0 + True x 2 "┃", end="" x = 0 + True x 1 []