pyPEG2 (plain and simple intrinsic parser interpreter for Python) pyPEG2 is a plain and simple intrinsic parser interpreter framework for Python version 2.7 and 3.x. It is based on Parsing Expression Grammar (PEG). With pyPEG you can parse many formal languages in a very easy way. NOTE: to build pyPEG2 with python3 run the slackbuild with option PYTHON3=yes. # PYTHON3=yes ./pyPEG2.SlackBuild NOTE2: In this case 'lxml' need to be build with Python3 bindings.