[dnet]

Exrex does the same in Python and much more:

   - Generating all matching strings
   - Generating a random matching string
   - Counting the number of matching strings
   - Simplification of regular expressions

https://github.com/asciimoo/exrex (AGPL licensed)

[omegote]

That's cool, thanks. I've discovered sre_parse thanks to that link, so cool too.