Python getattr报TypeError错误，getattrtypeerror,#-*-coding:u

Python getattr报TypeError错误，getattrtypeerror,#-*-coding:u

#-*-coding:utf-8-*-from sys import exit class newgame(object):    def __init__(self, start):         self.start = start        #self.cccl()    def play(self):        next = self.start        while True:            print "\n--------"            print next            room = getattr(self, next)            next = room()    def death(self):        print "this is death"        exit(-1)    def cccl(self):        print "this is bbbb"        #return self.al() 如果加上return 或者 exit 就成功不加则报错        #exit(1)     def al(self):        print "this is al"        action = raw_input("> ")        if action == '1':                return "death"        elif action == '2':                return "cccl"ngame = newgame("al")ngame.play()

line 17, in play
room = getattr(self, next)
TypeError: getattr(): attribute name must be string

请问这是为什么呢？
pyenv version
anaconda-2.0.1 (set by /usr/local/opt/pyenv/version)

但是放到 ideone.com 上就又不报错了

编橙之家文章，