On Aug 6, 11:02 am, MRAB <pyt...@mrabarnett.plus.com> wrote: > Robert Dailey wrote: > > Hey guys, > > > I'm creating a python script that is going to try to search a text > > file for any text that matches my regular expression. The thing it is > > looking for is: > > > FILEVERSION #,#,#,# > > > The # symbol represents any number that can be any length 1 or > > greater. Example: > > > FILEVERSION 1,45,10082,3 > > > The regex should only match the exact above. So far here's what I have > > come up with: > > > re.compile( r'FILEVERSION (?:[0-9]+\,){3}[0-9]+' ) > > > This works, but I was hoping for something a bit cleaner. I'm having > > to create a special case portion of the regex for the last of the 4 > > numbers simply because it doesn't end with a comma like the first 3. > > Is there a better, more compact, way to write this regex? > > The character class \d is equivalent to [0-9], and ',' isn't a special > character so it doesn't need to be escaped: > > re.compile(r'FILEVERSION (?:\d+,){3}\d+')
But ',' is a special symbol It's used in this way: {0,3} This will match the previous regex 0-3 times. Are you sure commas need not be escaped? In any case, your suggestions help to clean it up a bit! -- http://mail.python.org/mailman/listinfo/python-list