Index – O

object (traits.observation.events.DictChangeEvent attribute) (traits.observation.events.ListChangeEvent attribute) (traits.observation.events.SetChangeEvent attribute) (traits.observation.events.TraitChangeEvent attribute) (traits.trait_dict_object.TraitDictObject attribute) (traits.trait_list_object.TraitListObject attribute) (traits.trait_set_object.TraitSetObject attribute) object parameter notification handlers validate() OBJECT_IDENTITY_COMPARE (in module traits.constants) objtype (traits.util.trait_documenter.TraitDocumenter attribute) observe() (in module traits.has_traits) (traits.has_traits.HasTraits method) ObserverExceptionHandler (class in traits.observation.exception_handling) ObserverExceptionHandlerStack (class in traits.observation.exception_handling) ObserverExpression (class in traits.observation.expression) old (traits.observation.events.TraitChangeEvent attribute) (traits.util.event_tracer.ChangeMessageRecord attribute)

old parameter to the notification handlers on_trait_change decorator method semantics syntax on_trait_change() (in module traits.has_traits) (traits.has_traits.HasTraits method) on_trait_event() method on_trait_event() (traits.has_traits.HasTraits method) optional_import() (in module traits.testing.optional_dependencies) orientation (traits.trait_types.Button attribute) (traits.trait_types.ToolbarButton attribute) overriding default values examples owner_deleted() (traits.traits_listener.ListenerNotifyWrapper method)