Irregular methods on regular expressions
copied from cf-staging / exrexExrex is a command line tool and python module that generates all - or random - matching strings to a given regular expression and more. It's pure python, without external dependencies.
There are regular expressions with infinite matching strings (eg.: [a-z]+), in these cases exrex limits the maximum length of the infinite parts.
Exrex uses generators, so the memory usage does not depend on the number of matching strings.
