This library allows your Java program to interface very easily with the Python world. It uses the Pyro protocol to call methods on remote objects. (See https://github.com/irmen/Pyro4). To that end, it also contains and uses a feature complete pickle protocol implementation -read and write- to exchange data with Pyro/Python. Pyrolite only implements part of the client side Pyro library, hence its name 'lite'... But because Pyrolite has no dependencies, it is a much lighter way to use Pyro from Java/.NET than a solution with jython+pyro or IronPython+Pyro would provide. So if you don't need Pyro's full feature set, and don't require your Java/.NET code to host Pyro objects itself, Pyrolite may be a good choice to connect java or .NET and python. Version 4.14 changes: Java 7 or newer is now required to build (jdk 1.7+). Support for protocol changes introduced in Pyro 4.48. Support for iterator result item streaming added (introduced in Pyro 4.49). Shows python exception type better in .net exception messages.