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 behaviour, 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: DialogueStateTracker
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.
Return type: str
export_stories_to_file(export_path='debug.md')
Dump the tracker as a story to a file.
Return type: None
classmethod from_dict(sender_id, events_as_dict, slots=None, max_event_history=None)
Create a tracker from dump.
Return type: DialogueStateTracker
get_last_event_for(event_type, action_names_to_exclude=None, skip=0)
Gets the last event of a given type which was actually applied.
Returns event which matched the query or None if no event matched.
Return type: Optional[Event]
current_slot_values()
Return the currently set values of the slots.
Return type: Dict[str, Any]
get_slot(key)
Retrieves the value of a slot.
Return type: Optional[Any]
trigger_followup_action(action)
Triggers another action following the execution of the current.
Return type: None