求助，用python保留文本文件中需要的字符，去掉多余的字符 - Python论坛

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求助，用python保留文本文件中需要的字符，去掉多余的字符

我想将我的数据库中多余的信息去掉如：
> sp|A8X858|DRE2_CAEBR Anamorsin homolog OS=Caenorhabditis briggsae GN=CBG09135 PE=3 SV=2
MSAALSDFLKQSNLLQVTDGGPLVAGTDGVEGTRVDLVGEVEHAIIQVQE
TELLAEVCNTVFDVMKQNGEVLVFSTDLTTAHRKLRIAGFRVTELAADWP
ARGVKSVNFGDKVTLDLGNATVEEDLIDEDGLLQEEDYEKPTGDQLKAGG
CGPDDPNKKKRACKNCNCGLAEQEEAEKMGKIAEASAAKSSCGNCALGDA
FRCATCPYLGQPPFKPGETVKLSSVDDF
> sp|Q90660|BIR_CHICK Inhibitor of apoptosis protein OS=Gallus gallus GN=ITA PE=2 SV=1
MNIMDSSPLLASVMKQNAHCGELKYDFSCELYRMSTFSTFPVNVPVSERR
LARAGFYYTGVQDKVKCFSCGLVLDNWQPGDNAMEKHKQVYPSCSFVQNM
LSLNNLGLSTHSAFSPLVASNLSPSLRSMTLSPSFEQVGYFSGSFSSFPR
DPVTTRAAEDLSHLRSKLQNPSMSTEEARLRTSHAWPLMCLWPAEVAKAG
LDDLGTADKVACVNCGVKLSNWEPKDNAMSEHRRHFPNCPFVENLMRDQP
SFNVSNVTMQTHEARVKTFINWPTRIPVQPEQLADAGFYYVGRNDDVKCF
CCDGGLRCWESGDDPWIEHAKWFPRCEYLLRVKGGEFVSQVQARFPHLLW
NSSCTTSDKPVDENMDPIIHFEPGESPSEDAIMMNTPVVKAALEMGFSRR
LIKQTVQSKILATEENYKTVNDLVSELLTAEDEKREEEKERQFEEVASDD
LSLIRKNRMALFQRLTSVLPILGSLLSAKVITELEHDVIKQTTQTPSQAR
ELIDTVLVKGNAAASIFRNCLKDFDPVLYKDLFVEKSMKYVPTEDVSGLP
MEEQLRRLQEERTCKVCMDKEVSIVFIPCGHLVVCKECAPSLRKCPICRG
TIKGTVRTFLS
想将>后面的多余信息去掉最终保留成如下的格式：
>A8X858
MSAALSDFLKQSNLLQVTDGGPLVAGTDGVEGTRVDLVGEVEHAIIQVQE
TELLAEVCNTVFDVMKQNGEVLVFSTDLTTAHRKLRIAGFRVTELAADWP
ARGVKSVNFGDKVTLDLGNATVEEDLIDEDGLLQEEDYEKPTGDQLKAGG
CGPDDPNKKKRACKNCNCGLAEQEEAEKMGKIAEASAAKSSCGNCALGDA
FRCATCPYLGQPPFKPGETVKLSSVDDF
>Q90660
MNIMDSSPLLASVMKQNAHCGELKYDFSCELYRMSTFSTFPVNVPVSERR
LARAGFYYTGVQDKVKCFSCGLVLDNWQPGDNAMEKHKQVYPSCSFVQNM
LSLNNLGLSTHSAFSPLVASNLSPSLRSMTLSPSFEQVGYFSGSFSSFPR
DPVTTRAAEDLSHLRSKLQNPSMSTEEARLRTSHAWPLMCLWPAEVAKAG
LDDLGTADKVACVNCGVKLSNWEPKDNAMSEHRRHFPNCPFVENLMRDQP
SFNVSNVTMQTHEARVKTFINWPTRIPVQPEQLADAGFYYVGRNDDVKCF
CCDGGLRCWESGDDPWIEHAKWFPRCEYLLRVKGGEFVSQVQARFPHLLW
NSSCTTSDKPVDENMDPIIHFEPGESPSEDAIMMNTPVVKAALEMGFSRR
LIKQTVQSKILATEENYKTVNDLVSELLTAEDEKREEEKERQFEEVASDD
LSLIRKNRMALFQRLTSVLPILGSLLSAKVITELEHDVIKQTTQTPSQAR
ELIDTVLVKGNAAASIFRNCLKDFDPVLYKDLFVEKSMKYVPTEDVSGLP
MEEQLRRLQEERTCKVCMDKEVSIVFIPCGHLVVCKECAPSLRKCPICRG
TIKGTVRTFLS
下面是我的程序不知道为什么总是有错希望能帮帮我 `·· 初学者请指教

程序代码：

import sys
import re
import os
def SELECT (filename1):
    f1 = open (filename1)
    f2 = open ("111.txt","w")   #存放结果的文件
    line1 = f1.readline()
    while line1:
        temp1 = re.sub('^\s+','',line1) #去除开头的空白
        temp1 = re.sub('\s+$','',temp1) #去除开头的空白
        p1 = (r'>')
        p2 = (r'|')
        result = p1.match(temp1)
        if(result):
            columns1 = p2.match(temp1)
            columns2 = columns1.strip('||')
            print columns2
        else print temp1
    f1.close()
    f2.close()
SELECT('anti2.txt')