from random import choicecave_numbers = range(0,20)caves = []for i in cave_numbers:    caves.append([])#保证所有洞穴双向连通unvisited_caves = range(0,20)visited_caves = [0]unvisited_caves.remove(0)while unvisited_caves != []:    i = choice(visited_caves)    if len(caves[i]) >= 3:        continue    next_cave = choice(unvisited_caves)    caves[i].append(next_cave)    caves[next_cave].append(i)    visited_caves.append(next_cave)    unvisited_caves.remove(next_cave)    ‘‘‘    for number in cave_numbers:        print number, ":", caves[number]        print "-------visited cave------"    ‘‘‘print caves#保证每个洞穴与另外三个洞穴相连        for i in cave_numbers:    while len(caves[i]) < 3:        passage_to = choice(cave_numbers)        caves[i].append(passage_to)    ‘‘‘    for number in cave_numbers:              print number, ":", caves[number]    print "-------other cave----------"    ‘‘‘print caves#加入怪兽的朋友wumpus_location = choice(cave_numbers)wumpus_friend_location = choice(cave_numbers)player_location = choice(cave_numbers)while player_location == wumpus_location or player_location == wumpus_friend_location:    player_location = choice(cave_numbers)print "Welcome to Hunt the Wumpus!"print "You can see ", len(cave_numbers), "caves"print "To play, just type the number"print "of the cave you wish to enter next"while True:    print "You are in cave ", player_location    print "From here, you can see caves:", caves[player_location]    if wumpus_location in caves[player_location] :        print "I smell a wumpus!"    if wumpus_friend_location in caves[player_location]:        print "I smell an even stinkier wumpus!"    ‘‘‘    if (player_location == wumpus_location - 1 or        player_location == wumpus_location + 1):        print "I smell a wumpus!"    if (player_location == wumpus_friend_location - 1 or        player_location == wumpus_friend_location + 1):        print "I smell an even stinkier wumpus!"    ‘‘‘    print "Which cave next?"    player_input = raw_input(">")    if (not player_input.isdigit() or        int(player_input) not in caves[player_location]):        print player_input + "?"        print "That‘s not a direction that I can see!"        continue    else:        player_location = int(player_input)        if player_location == wumpus_location:            print "Aargh! you got eaten by a wumpus!"            break        if player_location == wumpus_friend_location:            print "Aargh! you got eaten by a wumpus‘s friend!"            break