If you would like to contribute to cqlsh, find out more information here.

cqlsh is a Python-based command-line client for running CQL commands on a Cassandra cluster. This script and the associated libraries come bundled with Apache's Cassandra installer. This repo is a re-bundled version that allows for cqlsh to be used on a machine separate from that running Cassandra or from inside a virtual environment.

Documentation is available in the Apache Cassandra(TM) 2.0 documentation.