[tga]

In this combination SQLAlchemy feels a bit mismatched because it is heavier than Flask itself, somewhat negating the joy of using a micro framework. On small projects I enjoyed using things like the web2py Data Access Layer, a single module sweetening access to a large number of databases.

https://code.google.com/p/web2py/source/browse/gluon/dal.py

[vosper]

I don't find any mismatch in using a heavy framework like SqlAlchemy with Flask - I choose Flask because I want my web framework to be lightweight, but I use SqlAlchemy because I want the full power of that library. I think it's fine to take a component-level view and choose light- or heavy-weight components as you see fit.