Find text/pattern under parent folder from matched file names

The small piece of code take the folder name and the pattern of the possible file names which might have the text then it takes again the pattern/actual text which one is being searched.

It prints the file name and line searching out the folder.

import os
import re
#import sys
#shutil


def matchline(line,match):
   #cmatch=re.compile(match)
   cmatch=match
   checkmatch=cmatch.search(line)
   if checkmatch!=None:
      print "-----------------------------------------"
      print "Got the line...."+line
      return 0
   else:
      return -1

def readfilestring(filename, match):
   linestring = open(filename, 'r')
   l=linestring.readline()
   while l != '':
      #print l
      if matchline(l,match) ==0:
         print "<----in file" + filename
         print "-----------------------------------------"
      l=linestring.readline()
      

def search_file(search_path,filename,stringpatt):
   try:
      dirList = os.listdir(search_path)
   except Exception, e:
      print "Search error for OS issue - "
      print e
   else:
      for d in dirList:
         if os.path.isdir(search_path+os.sep+d) == True:
            search_file(search_path+os.sep+d,filename,stringpatt)
         elif os.path.isfile(search_path+os.sep+d) == True:
            #print d + " is a file update whatever required"
            pmatch=filename.search(d)
            if pmatch==None:
               ss=1
            else:
               #print "-----------------------------------------"
               #print "The file is found - "+search_path+os.sep+d
               #print "-----------------------------------------"
               readfilestring(search_path+os.sep+d, stringpatt)
         else:
            print "Unknown filesystem object - "+search_path+os.sep+d
   
if __name__ == '__main__':
   search_path = raw_input("Enter search_path: ")
   filepattern = raw_input("Enter filepattern: ")
   stringpattern= raw_input("Enter stringpattern: ")
   try:
      retest="filepattern"
      ire=re.compile(filepattern,re.I)
      retest="stringpattern"
      strre=re.compile(stringpattern,re.I)
   except Exception, e:
      print "Reg Ex problem - for "+retest
      print e
   else:
      if os.path.exists(search_path):
         find_file = search_file(search_path,ire,strre)
      else:
         print "Not a valid path - "+search_path