Parsy is an easy way to combine simple, small parsers into complex, larger parsers. If it means anything to you, it's a monadic parser combinator library for LL(infinity) grammars in the spirit of Parsec, Parsnip, and Parsimmon.
Parsy requires Python 3.3 or greater.
Links:
To contribute, please create a fork and submit a pull request on GitHub, after checking the "contributing" section of the docs. Thanks!
parsy was original written by Jeanine Adkisson, with contributions by other people as can be found in the git commit history.