()
Run migrations in 'online' mode.

    In this scenario we need to create an Engine
    and associate a connection with the context.
Run migrations in 'online' mode.
Run migrations in online mode .
def run_migrations_online():
    """Run migrations in 'online' mode.

    In this scenario we need to create an Engine
    and associate a connection with the context.

    """
    engine = sqla_api.get_engine()
    with engine.connect() as connection:
        context.configure(connection=connection,
                          target_metadata=target_metadata)
        with context.begin_transaction():
            context.run_migrations()
def run_migrations_online ( ) : engine = sqla_api . get_engine ( ) with engine . connect ( ) as connection : context . configure ( connection = connection , target_metadata = target_metadata ) with context . begin_transaction ( ) : context . run_migrations ( )