Alembic Cheat Sheet - Python/SQLAlchemy

27 Aug 2014 alembic revision --autogenerate -m "<your message>"
alembic upgrade head

Problem: FAILED: Target database is not up to date.
Solution: alembic upgrade head

Problem: No such revision '5000106def16'

Solution: 

1. sqlite3 db.sqlite3
2. drop table alembic_version; (and exit, ctrl+d)
3. alembic upgrade head