guest_list=['Niuniu','Niu Ke Le'] for i in guest_list: print('{}, do you want to come to my celebration party?'.format(i)) print() guest_list.insert(0,'GURR')#guest_list=['GURR','Niuniu','Niu Ke Le'] guest_list.insert(2,'Niumei')#guest_list=['GURR','Niuniu','Niumei','Niu Ke Le'] guest_list.append('LOLO')#guest_list=['GURR','Niuniu','Niumei','Niu Ke Le','LOLO'] for j in guest_list: print('{}, thank you for coming to my celebration party!'.format(j)) python列表list=['']的insert(index,obj)和append()方法,insert插入index索引位置,append添加到列表末尾。