import pygame

H=50
W=50
GridSize=10

def getColor(obj):
	if obj == 'ant': return 0x0000FF
	return 0

def drawWorld():
	for cellNdx in range(W):
		for rowNdx in range(H):
			pygame.draw.rect(screen, getColor(world[cellNdx][rowNdx]), (cellNdx*GridSize, rowNdx*GridSize, GridSize-1, GridSize-1))
	pygame.display.flip()


world = []
for i in range(W): world.append([None] * H)



screen = pygame.display.set_mode((W*GridSize, H*GridSize))
world[5][5] = 'ant'
drawWorld()