Clint : Clint is a python module filled with a set of awesome tools for developing commandline applications.
cliff : Command Line Interface Formulation Framework. cliff is a framework for building command line programs. It uses plugins to define sub-commands, output ...
Data Science Toolkit : A collection of the best open data sets and open-source tools for data science, wrapped in an easy-to-use REST/JSON API with command line, Python and ...
docopt : Command-line interface description language
Kartograph : The Kartograph map generator has just one method, which is there to generate SVG maps (surprise).
Command-line interface description language. docopt helps you define interface for your command-line app, and automatically generate parser for it.