1 """ Python RegularExpression example and
   2 answer of http://bioinfo.sarang.net/technote/read.cgi?board=QnAboard&nnew=2&y_number=199 
   3 """
   4 import unittest, re
   5 
   6 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"
   7 
   8 ug="Mm\.\d+"
   9 
  10 def getUg(anInStr):
  11     m = re.compile(ug)
  12     p = m.search(anInStr)
  13     if p:
  14         return p.group()
  15 
  16 def getUg2(anInStr):
  17     return re.search(ug,anInStr).group()
  18 
  19 class ReTest(unittest.TestCase):
  20     def testGetUg(self):
  21         self.assertEquals('Mm.41560', getUg(instr))
  22     def testGetUg2(self):
  23         self.assertEquals('Mm.41560', getUg2(instr))
  24 
  25 
  26 #if there are many matching groups in one string
  27 def getTraceIds(besid):
  28     url_bes="http://xx.xx.xx/cgi-bin/Projects/S_scrofa/WebFPCreport.cgi?mode=wfcreport&name=%s"
  29     p_tid = re.compile(r'\?traceid=(\w+)\"')
  30     result=list()
  31     doc=urllib2.urlopen(url_bes%besid).read()
  32     while True:
  33         m=p_tid.search(doc)
  34         if not m: break
  35         result.append(m.group(1))
  36         doc=doc[m.span()[1]:]
  37     return result
  38 
  39 if __name__=='__main__':
  40     unittest.main(argv=('','-v'))