"Christos Georgiou" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > On Thu, 26 Jan 2006 17:09:18 GMT, rumours say that "Roger L. Cauvin" > <[EMAIL PROTECTED]> might have written: > >>Thanks, but the second test case I listed contained a typo. It should >>have >>contained a sequence of three of the letter 'a'. The test cases should >>be: >> >>"xyz123aaabbab" accept >>"xyz123aabbaaab" reject > > Here I object to either you or your need for a regular expression. You > see, > before the "aaa" in your second test case, you have an "arbitrary sequence > of characters", so your requirements are met.
Well, thank you for your efforts so far, Christos. My purpose is to determine whether it's possible to do this using regular expressions, since my application is already architected around configuration files that use regular expressions. It may not be the best architecture, but I still don't know the answer to my question. Is it *possible* to fulfill my requirements with regular expressions, even if it's not the best way to do it? The requirements are not met by your regular expression, since by definition the "arbitrary sequence of characters" stops once the sequences of a's and b's starts. -- Roger L. Cauvin [EMAIL PROTECTED] (omit the "nospam_" part) Cauvin, Inc. Product Management / Market Research http://www.cauvin-inc.com -- http://mail.python.org/mailman/listinfo/python-list
