I might have some bandwidth to help out, although it's likely not until the end of July. The best bet for anyone who wants to help on Jython dev is really just to hang out on the IRC channel, #jython on, or attend a sprint like the one upcoming at EuroPython. Then you can rely on the Jython developers as a community, not as an individual.

One possible starting point for an array interface is; it seems well supported and capable of handling large data sets. For the Numpy side of things, Daniel Lemire maintained JNumeric, which was started by Tim Hochberg, until about 2002, this could be a useful starting point for how to integrate into Jython:

Lastly, Leo's reply to your other email is correct: it's best to write everything in pure Jython, just calling to (or calling back from) Java as necessary. Based on my experience, I would imagine you could get most of the functionality done this way, and it would help you determine what you need to write in Java directly to get desired performance and/or compatibility.

- Jim

On Mon, Jun 30, 2008 at 1:38 PM, Frank Wierzbicki <> wrote:
On Mon, Jun 30, 2008 at 2:42 PM, Eric Jonas <> wrote:
> I've been following Jython's status for some time now and it's quite
> exciting -- I remember reading someplace about a Google Summer-of-code
> proposal to implement Numpy using Jython -- might anyone know if this
> project was funded by Google or not? I can't find any mention of it on
> the official SOC wiki. If not, is anyone interested in perhaps trying to
> get at least the "array" interface up and running with me?
I'm afraid that project did not get funded, but there are many
developers around here that would be interested.  I can't personally
work on this for the short term, but I'd be glad to help with any
questions you might have.


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Jim Baker