1 a = '123' 2 a = list(a) 3 a[2] = '4' 4 news = ''.join(a) 5 print news,a View Code 相关文章: 2022-01-01 2021-10-19 2022-12-23 2021-04-17 2021-11-11 2021-07-10 2021-09-24 2021-11-22