The project is mature, stable, and widely used.
Released source packages are available on
should be as easy as
pip install rpy2
The source code is also in a public repository on bitbucket.
More information can be found in the documentation.
The same license as R: GPLv2 or greater.
Consider having a look at the documentation. Otherwise wuestions should preferably be asked on the rpy mailing-list on SourceForge, or on StackOverflow. Bugs, or wishes, can also go to the bitbucket page for the project.
If looking for rpy or the old website, it was moved to here.