python-pyparsing - 2.2.0+dfsg1-2 main

The parsing module is an alternative approach to creating and
executing simple grammars, vs. the traditional lex/yacc approach, or
the use of regular expressions. The parsing module provides a
library of classes that client code uses to construct the grammar
directly in Python code.
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Here's an example:
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from pyparsing import Word, alphas
greet = Word(alphas) + "," + Word(alphas) + "!"
hello = "Hello, World!"
print hello, "->", greet.parseString(hello)
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This package contains the Python 2.7 module.