authentication library for OpenStack Identity - doc

 Keystoneauth is a library that contains tools for authenticating with
 OpenStack Clients. These tools include: authentication plugins (password,
 token, and federation based); discovery mechanisms to determineversion support
 for OpenStack clouds; and a session used to maintain client settings across
 requests. It is designed for use in conjunction with the existing OpenStack
 clients and for simplifying the process of writing new clients.
 .
 This package contains the documentation.