代码如下：
这个代码的目的是要找到在这两个文件中存在的满足条件的行，比如下面两行：
E00548:177:HKH53CCXY:4:1204:1783:5563|TACAGACTGTGGCAAGCAACCGAT  163     chr22   24930312        54      71M67S  =       24930312        71      GAGAATTGCTTGGGCAGAGGTTGCAGTGAACTGAGATCATGCCACTGCACTCCAGCCTGGCGACAGAGCGAACCACAGTCTGTAAGATCGGAAGAGCGTCGTGTAGGGAAAGAGTGTAGATCTCGGTGGTCGCCGTAT   JJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJAJJJJFJJJJAAJJFJFJJJJJAFJJJJJJJJJJFAJAAF   NM:i:0  MD:Z:71 AS:i:71 XS:i:54 RG:Z:L004

E00548:177:HKH53CCXY:4:2210:30573:69678|CAAGCAACCGATTACAGACTGTGG        99      chr22   24930312        54      71M67S  =       24930312        71      GAGAATTGCTTGGGCAGAGGTTGCAGTGAACTGAGATCATGCCACTGCACTCCAGCCTGGCGACAGAGCGAACCACAGTCTGTAAGATCGGAAGAGCACACGTCTGAACTCCAGTCACATCTCGTATGCCGTCTTCTG   JJJJJJJFJJJJJJJJJJFJJJJJJJJJJJJFJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJFJJJJJJJJJJJJAJJJJJJFJJJFFJJJ7   NM:i:0  MD:Z:71 AS:i:71 XS:i:54 RG:Z:L004


这是两行，分别来自打开的两个文件，格式都是相同的，筛选出这两行的条件就是：
1、这两行的第一列中的TACAGACTGTGGCAAGCAACCGAT 与 CAAGCAACCGATTACAGACTGTGG
     第一个的前12个字符等于第二个中的后12个字符，第一个的后12个字符等于第二个中的前12个字符，直观一点就是：
     TACAGACTGTGG   CAAGCAACCGAT
     CAAGCAACCGAT   TACAGACTGTGG
2、第四列值相同
3、这两行的第8列值也相同

如上代码所示，我是对这两个文件用了两个for循环，满足条件的就写入文件，但是这个代码运行得十分缓慢，请问一下怎么修改可以提高运行速度啊？