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Groups > comp.lang.python > #45885
| References | <knno5h$t9f$1@ger.gmane.org> |
|---|---|
| From | Devin Jeanpierre <jeanpierreda@gmail.com> |
| Date | 2013-05-24 09:13 -0400 |
| Subject | Re: Utility to locate errors in regular expressions |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.2065.1369401265.3114.python-list@python.org> (permalink) |
On Fri, May 24, 2013 at 8:58 AM, Malte Forkel <malte.forkel@berlin.de> wrote: > As a first step, I am looking for a parser for Python regular > expressions, or a Python regex grammar to create a parser from. the sre_parse module is undocumented, but very usable. > But may be my idea is flawed? Or a similar (or better) tools already > exists? Any advice will be highly appreciated! I think your task is made problematic by the possibility that no single part of the regexp causes a match failure. What causes failure depends on what branches are chosen with the |, *, +, ?, etc. operators -- it might be a different character/subexpression for each branch. And then there's exponentially many possible branches. -- Devin
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Re: Utility to locate errors in regular expressions Devin Jeanpierre <jeanpierreda@gmail.com> - 2013-05-24 09:13 -0400 Re: Utility to locate errors in regular expressions Roy Smith <roy@panix.com> - 2013-05-24 09:40 -0400
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