The DNAnexus dxpy Python library provides Python bindings to interact with the DNAnexus Platform via its API. The bindings are available to Python apps running within the DNAnexus Execution Environment, and can also be used in scripts you run that access the API from the outside. Before you start digging in, you may want to take a look at the Introduction to the DNAnexus Platform. The following references may also be useful to you as you develop your own scripts and apps.