emded revision control in Python application?

[Emile van Sebille]

On 6/22/2012 8:58 AM duncan smith said...
> Hello,
> I have an application that would benefit from collaborative working.
> Over time users construct a "data environment" which is a number of
> files in JSON format contained in a few directories

You don't say what your target platform is, but on linux I've done some 
testing with python-fuse that allows interception on file access to take 
whatever actions you like, in your case archive prior upon write.

Might be worth a look.

Emile