2017-12-20python全栈9期第五天第一节之昨日内容回顾和作业讲解之字母变大写时间:2023-03-09 13:09:05 #!/user/bin/python# -*- coding:utf-8 -*-lis = [2,3,'k',['qwe',20,['k1',['tt','3','1']],89],'ab','adv']#tt变成大写、lis[3][2][1][0] = 'TT'print(lis)lis[3][2][1][0] = lis[3][2][1][0].upper()print(lis)