[Pyparsing] Announcing Booleano

[Gustavo N. <me...@gu...>]

Hello, everyone.

I am proud to announce the first alpha release of Booleano, an interpreter of 
boolean expressions, a library to define and run filters available as text 
(e.g., in a natural language) or in Python code.

In order to handle text-based filters, Booleano ships with a fully-featured 
parser whose grammar is adaptive: Its properties can be overridden using 
simple configuration directives. This parser is powered by Pyparsing.

On the other hand, the library exposes a pythonic API for filters written in 
pure Python. These filters are particularly useful to build reusable 
conditions from objects provided by a third party library.

It's been designed to address the following use cases:
 1.- Convert text-based conditions: When you need to turn a condition 
available as plain text into something else (i.e., another filter).
 2.- Evaluate text-based conditions: When you have a condition available as 
plain text and need to iterate over items in order to filter out those for 
which the evaluation of the condition is not successful.
 3.- Evaluate Python-based conditions: When you have a condition represented 
by a Python object (nothing to be parsed) and need to iterate over items in 
order to filter out those for which the evaluation of the condition is not 
successful.

This release is absolutely usable, but the documentation is far from complete 
because I needed this release out for another project I need to work on ASAP 
(it will depend on Booleano). The next release will ship with a nice 
documentation, I promise.

Website: http://code.gustavonarea.net/booleano/

I hope you'll like it! Comments are most welcome :)

Cheers,
-- 
Gustavo Narea <xri://=Gustavo>.
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