#format python

""" Python RegularExpression example and
answer of http://bioinfo.sarang.net/technote/read.cgi?board=QnAboard&nnew=2&y_number=199 
"""
import unittest, re

instr=">consensus:MG-U74Av2:99494_at; gb|AJ001700; Cluster Incl AJ001700:Mus musculus mRNA for neuroserpin /cds=(97,1329) /gb=AJ001700 /gi=2462594 /ug=Mm.41560 /len=2944"

ug="Mm\.\d+"

def getUg(anInStr):
    m = re.compile(ug)
    p = m.search(anInStr)
    if p:
        return p.group()

def getUg2(anInStr):
    return re.search(ug,anInStr).group()

class ReTest(unittest.TestCase):
    def testGetUg(self):
        self.assertEquals('Mm.41560', getUg(instr))
    def testGetUg2(self):
        self.assertEquals('Mm.41560', getUg2(instr))


#if there are many matching groups in one string
def getTraceIds(besid):
    url_bes="http://xx.xx.xx/cgi-bin/Projects/S_scrofa/WebFPCreport.cgi?mode=wfcreport&name=%s"
    p_tid = re.compile(r'\?traceid=(\w+)\"')
    result=list()
    doc=urllib2.urlopen(url_bes%besid).read()
    while True:
        m=p_tid.search(doc)
        if not m: break
        result.append(m.group(1))
        doc=doc[m.span()[1]:]
    return result

if __name__=='__main__':
    unittest.main(argv=('','-v'))