The netsa-python library is a grab-bag of Python routines and frameworks that we have found helpful when developing analyses using the SiLK toolkit. Of particular note are the netsa.script NetSA Scripting Framework, which provides a standard framework for writing scripts that process flow data, and the netsa.util.shell command line processing system, which provides tools for managing extremely complicated collections of shell processes that should fail or succeed together (extremely useful when working with named pipes).