Tracker
Tracker
Trackers maintain the state of a dialogue between the assistant and the user in the form of conversation sessions. To learn more about how to configure the session behavior, check out the docs on Session configuration.
class rasa.core.trackers.DialogueStateTracker(sender_id, slots, max_event_history=None, sender_source=None)
Maintains the state of a conversation.
The field max_event_history will only give you these last events, it can be set in the tracker_store.
applied_events()
Returns all actions that should be applied - without reverted events.
Return type
List[Event]
as_dialogue()
Return a Dialogue object containing all of the turns. This can be serialized and later used to recover the state of this tracker exactly.
Return type
Dialogue
change_form_to(form_name)
Activate or deactivate a form.
Return type
None
clear_followup_action()
Clears follow-up action when it was executed.
Return type
None
copy()
Creates a duplicate of this tracker.
Return type
current_slot_values()
Return the currently set values of the slots.
Return type
Dict[str, Any]
current_state(event_verbosity=<EventVerbosity.NONE: 1>)
Return the current tracker state as an object.
Return type
Dict[str, Any]
events_after_latest_restart()
Return a list of events after the most recent restart.
Return type
List[Event]
export_stories(e2e=False, include_source=False)
Dump the tracker as a story in the Rasa Core story format. Returns the dumped tracker as a string.
Return type
str
export_stories_to_file(export_path='debug.md')
Dump the tracker as a story to a file.
Return type
None
from_dict(sender_id, events_as_dict, slots=None, max_event_history=None)
Create a tracker from dump. The dump should be an array of dumped events. When restoring the tracker, these events will be replayed to recreate the state.
Return type
get_last_event_for(event_type, action_names_to_exclude=None, skip=0)
Gets the last event of a given type that was actually applied. Returns event that matched the query or None if no event matched.
Return type
Optional[Event]
get_latest_entity_values(entity_type, entity_role=None, entity_group=None)
Get entity values found for the passed entity type and optional role and group in the latest message. If you are only interested in the first entity of a given type use next(tracker.get_latest_entity_values('my_entity_name'), None). If no entity is found None is the default result.
Return type
Iterator[str]
get_slot(key)
Retrieves the value of a slot.
Return type
Optional[Any]
👋 I can help you get started with Rasa and answer your technical questions.