def run_migrations_offline():
    """
    Run migrations in 'offline' mode.

    This configures the context with just a URL
    and not an Engine, though an Engine is acceptable
    here as well.  By skipping the Engine creation
    we don't even need a DBAPI to be available.

    Calls to context.execute() here emit the given string to the
    script output.
    """
    url = context.config.get_main_option("sqlalchemy.url")
    context.configure(url=url, compare_server_default=True)

    with context.begin_transaction():
        context.run_migrations()
def run_migrations_offline ( ) : url = context . config . get_main_option ( "sqlalchemy.url" ) context . configure ( url = url , compare_server_default = True ) with context . begin_transaction ( ) : context . run_migrations ( )
Run migrations in 'offline' mode.

    This configures the context with just a URL
    and not an Engine, though an Engine is acceptable
    here as well.  By skipping the Engine creation
    we don't even need a DBAPI to be available.

    Calls to context.execute() here emit the given string to the
    script output.