@loader_option()
def load_only(loadopt, *attrs):
 cloned = loadopt.set_column_strategy(attrs, {'deferred': False, 'instrument': True})
 cloned.set_column_strategy('*', {'deferred': True, 'instrument': True}, {'undefer_pks': True})
 return cloned

@ loader_option ( ) def load_only ( loadopt , * attrs ) : cloned = loadopt . set_column_strategy ( attrs , { 'deferred' : False , 'instrument' : True } ) cloned . set_column_strategy ( '*' , { 'deferred' : True , 'instrument' : True } , { 'undefer_pks' : True } ) return cloned
indicate that for a particular entity .