#!/usr/bin/env python # -*- coding: utf-8 -*- #一个位置的上下左右 def asides(pos): return [(pos[0]-1,pos[1]), (pos[0]+1,pos[1]), (pos[0],pos[1]-1), (pos[0],pos[1]+1)] def playerSteps(start, end, valids): if end not in valids or start not in valids: retur...