x[0] = '0' or x[0]='6' or x[0]='3' len(x)=6 x.isdigit() *但是有的债券也是6位 *比如010007.IB 相关文章: 2021-08-06 2021-06-20 2021-03-31 2022-12-23 2022-12-23 2021-12-31 2021-12-27 2021-12-04