python快速編程入門(mén)第四章答案？

#4.10.1的代碼 def PrintList(oList): if isinstance(oList,list): oLen = len(oList) Temp = oList[0:-1] oStr = '' for i in range(len(Temp)): t = Temp[i] + ', ' oStr += t return oStr + 'and ' + oList[-1] else: return 'Error' t = ['apple','banana','tofu','cat'] print PrintList(t)