Alembic create revision autogenerate with comment:
$ alembic -c dev.ini revision --autogenerate -m "adding some tables"
Check upgrade script:
$ cat alembic/versions/123xxx_xxx.py
Alembic upgrade metadata with version
$ alembic -c dev.ini upgrade 123xxx
Alembic upgrade metadata with latest version
$ alembic -c dev.ini upgrade head