Log Message:
devel/py-pyparsing2: import py27-pyparsing-2.4.7

This is the last version compatible with python 2.7.

The pyparsing module is an alternative approach to creating and executing
simple grammars, vs. the traditional lex/yacc approach, or the use of regular
expressions. The pyparsing module provides a library of classes that client
code uses to construct the grammar directly in Python code.