On 27 Jul 2004, James Keasley wrote: > This snippet should do it. > > $string =~ /(\d+)E(.*)/; > if (length($s) == $1){ > print "$1\n"; > } Uhh... what I think he means is: import re l,s = re.match(r'(\d+)E(.*)',string).groups() if len(s) == int(l): print s