Simplified problem

gistfile1.py

#project.py

if __name__ == '__main__':
    from project.model import Base, Log
    from project.db import engine
    Base.metadata.create_all(engine)    # Log shows me that table has been created.


# models.py
# .. imports and stuf
Base = declarative_base()

class Log(Base):
    __tablename__ = 'log'
    
    # column definitions etc
    
# some_script.py

log = Log()
Session.add(log)
Session.commit() # Will fail, 'no such table'