_verified_: 8x8 Network Utility

# move in X direction step_x = 1 if tx > x else -1 while x != tx: x += step_x if self.nodes[(x, y)] != "up": return None, f"Node (x,y) is down — path blocked" path.append((x, y))

path = [] x, y = src tx, ty = dst

# move in Y direction step_y = 1 if ty > y else -1 while y != ty: y += step_y if self.nodes[(x, y)] != "up": return None, f"Node (x,y) is down — path blocked" path.append((x, y)) 8x8 network utility