Faker is python-specific, and not really about creating databases, but of course you can tack that on easily. It also gives you specific values instead of a set schema and supports different languages. I use faker too, and my favourite is to tack it on to factory_boy (http://factoryboy.readthedocs.org/en/latest/) for unit testing data with random but reasonable values.

Maybe a cool idea is to merge these two projects or use faker to do the value generation part here, but add more stuff in this project that's about generating a consistent schema of related values - fake users that post fake posts from fake locations in a consistent manner.

edit: Actually it looks like this does use faker!