Python's Hidden Regular Expression Gems
Python&#x27;s re has nothing on CL-PPCRE [1] though. The ability to build up a &quot;regular expression&quot; from S-expressions is just too useful.<p>[1] <a href="http:&#x2F;&#x2F;weitz.de&#x2F;cl-ppcre&#x2F;" rel="nofollow">http:&#x2F;&#x2F;weitz.de&#x2F;cl-ppcre&#x2F;</a>