The official site is http://springpython.webfactional.com. And a quick check on my domain provider shows springpython.org is on the market.

That being said, I'd reach out to @refnode or @dmglab to see if they want to rekindle things. Also, you may wish to make contact with the maintainer of https://zato.io/. He's a friend of mine and uses Spring Python under the hood.

To build a community from the ashes, these are key people to make connection with. From there, I'd entertain going out and grabbing that domain (or perhaps springpython.io for something a little more modern?) and starting from there.