Anaconda

"Eunectes is a genus of non-venomous boas found in tropical South America, commonly called anacondas. An aquatic group of snakes inhabiting swamps and rivers, its members include some of the largest snakes in the world."

(from Wikipedia)

The hydrologist's playground to experiment with python. Some projects:

A front-end to topmodel
some examples of how to call C functions from python at polyglot