Lark is a parsing toolkit for Python, built with a focus on ergonomics, performance and modularity.

Lark can parse all context-free languages. To put it simply, it means that it is capable of parsing almost any programming language out there, and to some degree most natural languages too.

L'analyseur syntaxique de google

http://arxiv.org/pdf/1603.06042v1.pdf
http://colah.github.io/posts/2015-08-Understanding-LSTMs/
http://colah.github.io/posts/2014-07-NLP-RNNs-Representations/
https://en.wikipedia.org/wiki/Beam_search

Beautiful Soup is an HTML/XML parser for Python that can turn even invalid markup into a parse tree. It provides simple, idiomatic ways of navigating, searching, and modifying the parse tree. It commonly saves programmers hours or days of work.