Perl and some other current regex engines support Unicode properties, such as the category, in a regex. E.g. in Perl you can use \\p{Ll} to match an arbitrary l
Have you tried Ponyguruma, a Python binding to the Oniguruma regular expression engine? In that engine you can simply say \p{Armenian} to match Armenian characters. \p{Ll} or \p{Zs} work too.