I think OP meant transparent in essence that you can (in some environment?) just drop-in the library for a quick persistence? Say, some single-time use script (

I think OP meant transparent in essence that you can (in some environment?) just drop-in the library for a quick persistence? Say, some single-time use script (a quick scraper?). In such cases, it is less syntax heavy. Not every code one writes has to be production ready.