Difference between grap.core and grap.lang

The grap library contains two packages: grap.core and grap.lang. You can create grammar and parse text with both packages. The major difference is that you define rules with grap.core inside a python file and grap.lang is an own language.

grap.lang is generally prefered over grao.core. grap.lang is written with grap.core which could be seen as the low-level implementation.