Utility — 8x8 Network

def route_packet(self, src, dst): """Simple dimension-order routing (X then Y)""" if src not in self.nodes or dst not in self.nodes: return None, "Source or destination out of range" if self.nodes[src] != "up" or self.nodes[dst] != "up": return None, "Source or destination down"

> send 0,0 7,7 Routing failed: Node (4,0) is down — path blocked 8x8 network utility

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