我有两个txt文件，其中一个名为df1.txt，类似于以下文件，但更大。
>tr|A0A1B1L9R9|A0A1B1L9R9_BACTU ABC transporter permease OS=Bacillus thuringiensis OX=1428 GN=berB PE=4 SV=1
MNKQLFLASLKETQKSILSYACGAALYLWLLIWIFPSMVSAKGLNELIAAMPDSVKKIVG
MESPIQNVMDFLAGEYYSLLFIIILTIFCVTVATHLIARHVDKGAMAYLLATPVSRVQIA
ITQATVLILGLLIIVSVTYVAGLVGAEWFLQDNNLNKELFLKINIVGGLIFLVVSAYSFF
FSCICNDERKALSYSASLTILFFVLDMVGKLSDKLEWMKNLSLFTLFRPKEIAEGAYNIW
PVSIGLIAGALCIFIVAIVVFKKRDLPL
>sp|O15304|SIVA_HUMAN Apoptosis regulatory protein Siva OS=Homo sapiens OX=9606 GN=SIVA1 PE=1 SV=2
MPKRSCPFADVAPLQLKVRVSQRELSRGVCAERYSQEVFEKTKRLLFLGAQAYLDHVWDE
GCAVVHLPESPKPGPTGAPRAARGQMLIGPDGRLIRSLGQASEADPSGVASIACSSCVRA
VDGKAVCGQCERALCGQCVRTCWGCGSVACTLCGLVDCSDMYEKVLCTSCAMFET
另一个名为df2.txt，如下所示
>sp|O15304|SIVA_HUMAN (87-93) Best selected with ratio of 10 , 12 and 14
igpdgr
>tr|A0A1B1L9R9|A0A1B1L9R9_BACTU (135-168) Not selected with ratio of (12,14)
nkelflkinivggliflvvsaysff
fscicnderkalsysasltilffvldmvgklsdklewm
我想把它们放在一起。
首先，如果我们查看df1和df2，我们可以看到它们具有| A0A1B1L9R9 |
类似。我想将字符串放在此igpdgr下，并用df1中的字符串替换（基本上是小写），并在|之后添加任何内容。到df1。
所以输出将如下所示
>tr|A0A1B1L9R9|A0A1B1L9R9_BACTU ABC transporter permease OS=Bacillus thuringiensis OX=1428 GN=berB PE=4 SV=1 (135-168) Not selected with ratio of (12,14)
MNKQLFLASLKETQKSILSYACGAALYLWLLIWIFPSMVSAKGLNELIAAMPDSVKKIVG
MESPIQNVMDFLAGEYYSLLFIIILTIFCVTVATHLIARHVDKGAMAYLLATPVSRVQIA
ITQATVLILGLLIIVSVTYVAGLVGAEWFLQDNNLnkelflkinivgggliflvvsaysf
ffscicnderkalsysasltilffvldmvgklewmKNLSLFTLFRPKEIAEGAYNIW
PVSIGLIAGALCIFIVAIVVFKKRDLPL
>sp|O15304|SIVA_HUMAN Apoptosis regulatory protein Siva OS=Homo sapiens OX=9606 GN=SIVA1 PE=1 SV=2 (87-93) Best selected with ratio of 10 , 12 and 14
MPKRSCPFADVAPLQLKVRVSQRELSRGVCAERYSQEVFEKTKRLLFLGAQAYLDHVWDE
GCAVVHLPESPKPGPTGAPRAARGQMLigpdgrLIRSLGQASEADPSGVASIACSSCVRA
VDGKAVCGQCERALCGQCVRTCWGCGSVACTLCGLVDCSDMYEKVLCTSCAMFET