Hello Denis/Kent, Sorry if I created any confusion.
Here is my value: myString = """ https://hello.com/accid/12345-12 /12345-12 http://sadfsdf.com/12345-12 http://sadfsdf.com/asdf/asdf/asdf/12345-12 12345-12 """ so above statements are the value of myString (one string only). I couldn't try denis' suggestion because I have to replace all occurrences of 12345-12 at one go only. Here I am trying to convert 12345-12 into <a href=" http://mysite.com/12345-12";>12345-12</a> so it will make all occurrences of 12345-12 as hyperlink. Now here I want to exclude existing hyperlinks which has 12345-12 (e.g. http://sadfsdf.com/[^/] and http://sadfsdf.com/asdf/asdf/asdf/12345-12 and like that) I have applied one thing like re.sub('([^/][0-9]{6}-[0-9]{2})',r'<a href=" http://mysite.com/acid=\1";>\1</a>;', text ) but i think as kent mentioned i may be wrong about the working of [^/][0-9]{6}-[0-9]{2}). I assumed that while replacing it would ignore 12345-12 which has '/' prefixed. (i.e. /12345-12 ) this is just an example. I tried applying [^(http).*][0-9]{6}-[0-9]{2}) , as per my assumption it would ignore all the 12345-12 for which word is beginning with http. I may be wrong at this assumption. Please help how can i exclude number starting with http? Regards, Kumar On Wed, Apr 8, 2009 at 4:04 PM, Kent Johnson <ken...@tds.net> wrote: > > Kumar <hihir...@gmail.com> s'exprima ainsi: > > > >> Hi Danis, > >> > >> Just to be more specific that I can add [^/] in my expression which will > >> successfully work for url (i.e. http://sdfs/123-34) but it will also > work > >> for non url (i.e. /123-34 ) so u am just trying it to make it specific > for > >> url only > >> I have already tried [^(http).*/] but that also failed and it didn't > work on > >> /123-34 > > The [^] don't do what you think they do. > > In a regex, [abc] means, match a single character that is either a, b, > or c. [^abc] means match a single character that is not a, not b and > not c. It does *not* mean to match a three-letter string that is not > abc, or anything like that. > > I think you are trying to write a negative look-behind, something like > (?<!http//:) but it's hard to be sure without seeing your code. > > Did you try Denis' suggestion of a single regex to match both patterns? > > Kent > > PS Please use Reply All to reply to the list. >
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