def rollback(name, database=None, directory=None, verbose=None):
    """Rollback a migration with given name."""
    router = get_router(directory, database, verbose)
    router.rollback(name)
def rollback ( name , database = None , directory = None , verbose = None ) : router = get_router ( directory , database , verbose ) router . rollback ( name )
Rollback a migration with given name.