The Jython team has released the first major release of Jython in 4 years with version 2.2. Jython is a Java implementation of the Python language which compiles Python source code to Java byte code which then runs in the JVM. This version implements the internal architecture of Python 2.2 and features of Python 2.3. This version includes

new-style classes

Java Collections integration

PEP 302 implementation

iterators

generators

__future__ division

support for running on JDK1.5 and 1.6

new installer

a significant number of features to bring Jython in line with CPython

Last month the Java Language Runtime project was created as an environment for projects developing languages for the JVM to share information. The Jython team provided one of the first contributions with the code for Jython's package caching mechanism.