broken game of life

import random
import time

old_grid = [[0 for x in range(9)] for y in range(9)]

# for i in range(0, 9):
#     for j in range(0, 9):
#         old_grid[i][j] = random.randrange(0, 2)
old_grid[5][5] = 1
old_grid[5][6] = 1
old_grid[5][7] = 1
new_grid = old_grid.copy()
print(old_grid)
def wrapindex(i, i_max):
    return (i_max + (i % i_max)) % i_max

while 1:
    for x in range(0, 9):
        for y in range(0, 9):
            neighbors = old_grid[wrapindex(x-1, 9)][wrapindex(y+1, 9)] +       old_grid[wrapindex(x+1, 9)][wrapindex(y+1, 9)] + old_grid[wrapindex(x+1, 9)][wrapindex(y+ 1, 9)] + \
                        old_grid[wrapindex(x-1, 9)][wrapindex(y, 9)]   +  0  + old_grid[wrapindex(x+1, 9)][wrapindex(y, 9)]   + \
                        old_grid[wrapindex(x-1, 9)][wrapindex(y-1, 9)] +       old_grid[wrapindex(x+1, 9)][wrapindex(y-1, 9)] + old_grid[wrapindex(x+1, 9)][wrapindex(y-1, 9)]

            if neighbors == 3 and new_grid[x][y]== 0 :
                new_grid[x][y] = 1
            elif neighbors == 2 and new_grid[x][y]==1 :
                new_grid[x][y] = 1
            elif neighbors > 3:
                new_grid[x][y] = 0
            elif neighbors < 2:
                new_grid[x][y] = 0
            print(new_grid[x][y], end='')
        time.sleep(0.25)
        print()
    temp = old_grid[x][y]
    old_grid = new_grid.copy()
    print('\n')
    time.sleep(0.5)