Python and Java

Hi everyone,

I have been using python for a while now and I want to develop a piece of software in java that call some of my python methods. I have already explored jython however it seems I would have to re-writed the python files however I was wondering if there is anyway in which I can call the python files from java (specifically JBuilder) without doing much changes to the python files.

Does anyone has any suggestions????


All help welcomed, thanks.

I havnt done much work with Jython. But i really dont think you will have to rewrite any Python files, that is after all the point of it . Jython should be able to use any Python file/library, or i don't see a reason why not anyway.

Unfortuantly I havn't heard of any other way of integrating Python with Java, so my best advice would be to give Jython a shot!

Mark.

As netytan said, Jython is designed for this task and most Python scripts should run with little or no modification on Jython. The exception is scripts that use C extensions that have not be converted. Jython is also only at 2.1 at the moment, so 2.2 and later features will not work. A 2.2/2.3 release is supposed to happen later this year.

There are alternatives though. You could wrap your Python libraries in a wrapper like XML-RPC and run it as a server. Or use a CORBA orb, or SOAP or even COM. These all work in essentially the same way, with the Python running as a separate process and exposing the functionality to client programs that could be written in any language.

There was also JPI, a CPython <-> Java Interface, but it is no longer being developed and may take some effort to get working with the latest version of Python. You can find it at http://www.ndim.edrc.cmu.edu/dougc/jpi/Home.html.

Dave - The Developers' Coach

I have also found JPE (http://sourceforge.net/projects/jpe) which is similar to JPI, and also no longer being actively developed.

And SPIRO, a Python -> Java Orb. http://www.freenet.org.nz/python/spiro/

Dave - The Developers' Coach

Hi,

thanks for the reply, I installed jython a few weeks ago and then tried to run my python files but there were a number of errors, the way some methods are declared have to be rewritten for them to work.

Hi,

thanks for the reply, I thiink I will explore one of your suggestions, I am not too familiar on COM and SOAP but I will research them and give it a try if all else fails then its back to jython. Thanks