How to use SQLAlchemy ORM with SQLAlchemy Migrate?

Question

I was using SQLAlchemy ORM to connect to a in memory database when I decided to implement a versioning tracking to the DB schema. To do this I've been following the tutorial on how to set up Versioning using SQLAlchemy, but now I'm wondering if there is a way for me to get my upgrade and downgrade scripts to also update/create my SQLAlchemy.orm tables?

I ask this because I now don't know how to write code using only SQLAlchemy Migrate since a developer might not know of the most recent change done to the database. Currently the developer just has to look at the file containing the class that maps to a table in the DB to know what is available, but from my understanding using Migrate would not synchronize these classes with the changes applied in a upgrade/downgrade script. This synchronization would need to be done manually. I looked at reflect but this doesn't seem to require prior knowledge as to the structure of the table.

I know I must be missing something. I could have my DB opened in HeidiSQL and [ALT + TAB] each time my memory wants to confirm something in the DB but this is slows me down a lot when I used to just be able to use auto complete on classes as I type (Note: I'm heavily dyslexic and I'm prone to many spelling mistakes which is why I auto complete drastically improves my productivity). Is there a way for the upgrade scripts to create/update/delete files containing ORM classes?

ie.

class ExtractionEvent(Base):
    __tablename__ = 'ExtractionEvents'
    Id = Column(Integer, primary_key=True, autoincrement=True)
    ...