import random

#warning: x and y confusing

sx = 10
sy = 10
dfs = [[0 for col in range(sx)] for row in range(sy)]
maze = [[' ' for col in range(2*sx+1)] for row in range(2*sy+1)]
#1:up 2:down 3:left 4:right
operation = {1:(0,-1),2:(0,1),3:(-1,0),4:(1,0)}
direction = [1, 2, 3, 4]
stack = []

for i in range(2*sx+1):
    if i%2 == 0:
        for j in range(2*sx+1):
            maze[i][j] = '#'
for i in range(2*sy+1):
    if i%2 == 0:
        for j in range(2*sy+1):
            maze[j][i] = '#'

def show(graph):
    for i in graph:
        for j in i:
            print j,
        print

def showRouter(stack):
    RGragh = [[0 for col in range(sx)] for row in range(sy)]
    for (x, y) in stack:
        RGragh[y][x] = 1
    show(RGragh)
    print

def generateMaze(start):
    x, y = start
    dfs[y][x] = 1
    random.shuffle(direction)
    for d in direction:
        px, py = (x + y for x, y in zip(start, operation[d]))
        if px < 0 or px >= sx or py < 0 or py >= sy:
            pass
        else:
            if dfs[py][px] is not 1:
                mx = 2*x + 1
                my = 2*y + 1
                if d == 1:
                    maze[my-1][mx] = ' '
                elif d == 2:
                    maze[my+1][mx] = ' '
                elif d == 3:
                    maze[my][mx-1] = ' '
                elif d == 4:
                    maze[my][mx+1] = ' '
                generateMaze((px,py))

generateMaze((0,0))
show(dfs)
show(maze)