# -*- coding: utf-8 -*-
import re

regexPatt = r".*=([0-9]+)"
regexPatt1 = regexPatt[0:regexPatt.find("(")]
regexPatt2 = regexPatt[regexPatt.find("("):regexPatt.find(")")+1]

regexPatt = regexPatt1+regexPatt2
print "正規表現："+regexPatt
text = "hogefuga=1234\nfugafuga=8882\nsusono"

print "[全体のテキスト]\n"+text.replace("\n","\\n")
r = re.compile(regexPatt1,re.DOTALL)
findNotReplace = r.findall(text)[0]
print "[置き換えが起こらない部分（後方参照で一致する以前の部分）]\n"+findNotReplace.replace("\n","\\n")
r = re.compile(regexPatt,re.DOTALL)
findReplace = r.findall(text)[0]
#findReplace = "" if findNotReplace != findNotReplace else findReplace
print "[置き換えが起こる部分（後方参照）]\n"+findReplace.replace("\n","\\n")
print "[それ以降の部分]"
print text.replace(text[text.find(findNotReplace):len(findNotReplace)+len(findReplace)],"").replace("\n","\\n")