Something

import sys, refile = open("c:/sample.txt", "r")newfile = open("c:/sample2.txt", "w")contents = file.read()def dashrepl(matchobj):     newfile.write(matchobj.group(1) + "\n")	     return matchobj.group(1)re.sub(".*?({{(U|u)delh}}.*?{{(U|u)delf}}).*?", dashrepl, contents)newfile.close();file.close()