You could potentially use SQLA's ability to reflect your db to create the models either to get you started, or maybe in an automated fashion. Im sure there are

You could potentially use SQLA's ability to reflect your db to create the models either to get you started, or maybe in an automated fashion. Im sure there are loads of corner cases where it wouldn't work. We're happy users of alembic. In general we use it to do the initial grunt work and then manually edit the migrations / split into phases ourselves. For some stuff that Alembic doesn't handle very well (like check constraints) we've extended Alembic to handle those automatically in the way we like.