notice

This is documentation for Rasa Open Source Documentation v2.7.x, which is no longer actively maintained.
For up-to-date documentation, see the latest version (2.8.x).

Version: 2.7.x

rasa.shared.core.domain

InvalidDomain Objects

class InvalidDomain(RasaException)

Exception that can be raised when domain is not valid.

ActionNotFoundException Objects

class ActionNotFoundException(ValueError, RasaException)

Raised when an action name could not be found.

SessionConfig Objects

class SessionConfig(NamedTuple)

The Session Configuration.

default

| @staticmethod
| default() -> "SessionConfig"

Returns the SessionConfig with the default values.

are_sessions_enabled

| are_sessions_enabled() -> bool

Returns a boolean value depending on the value of session_expiration_time.

Domain Objects

class Domain()

The domain specifies the universe in which the bot's policy acts.

A Domain subclass provides the actions the bot can take, the intents and entities it can recognise.

from_file

| @classmethod
| from_file(cls, path: Text) -> "Domain"

Loads the Domain from a YAML file.

from_yaml

| @classmethod
| from_yaml(cls, yaml: Text, original_filename: Text = "") -> "Domain"

Loads the Domain from YAML text after validating it.

from_dict

| @classmethod
| from_dict(cls, data: Dict) -> "Domain"

Deserializes and creates domain.

Arguments:

  • data - The serialized domain.

Returns:

The instantiated Domain object.

from_directory

| @classmethod
| from_directory(cls, path: Text) -> "Domain"

Loads and merges multiple domain files recursively from a directory tree.

merge

| merge(domain: Optional["Domain"], override: bool = False) -> "Domain"

Merge this domain with another one, combining their attributes.

List attributes like intents and actions will be deduped and merged. Single attributes will be taken from self unless override is True, in which case they are taken from domain.

retrieval_intents

| @rasa.shared.utils.common.lazy_property
| retrieval_intents() -> List[Text]

List retrieval intents present in the domain.

collect_entity_properties

| @classmethod
| collect_entity_properties(cls, domain_entities: List[Union[Text, Dict[Text, Any]]]) -> Tuple[List[Text], Dict[Text, List[Text]], Dict[Text, List[Text]]]

Get entity properties for a domain from what is provided by a domain file.

Arguments:

  • domain_entities - The entities as provided by a domain file.

Returns:

A list of entity names. A dictionary of entity names to roles. A dictionary of entity names to groups.

collect_intent_properties

| @classmethod
| collect_intent_properties(cls, intents: List[Union[Text, Dict[Text, Any]]], entities: List[Text], roles: Dict[Text, List[Text]], groups: Dict[Text, List[Text]]) -> Dict[Text, Dict[Text, Union[bool, List]]]

Get intent properties for a domain from what is provided by a domain file.

Arguments:

  • intents - The intents as provided by a domain file.
  • entities - All entities as provided by a domain file.
  • roles - The roles of entities as provided by a domain file.
  • groups - The groups of entities as provided by a domain file.

Returns:

The intent properties to be stored in the domain.

__init__

| __init__(intents: Union[Set[Text], List[Text], List[Dict[Text, Any]]], entities: List[Union[Text, Dict[Text, Any]]], slots: List[Slot], responses: Dict[Text, List[Dict[Text, Any]]], action_names: List[Text], forms: Union[Dict[Text, Any], List[Text]], action_texts: Optional[List[Text]] = None, store_entities_as_slots: bool = True, session_config: SessionConfig = SessionConfig.default()) -> None

Creates a Domain.

Arguments:

  • intents - Intent labels.
  • entities - The names of entities which might be present in user messages.
  • slots - Slots to store information during the conversation.
  • responses - Bot responses. If an action with the same name is executed, it will send the matching response to the user.
  • action_names - Names of custom actions.
  • forms - Form names and their slot mappings.
  • action_texts - End-to-End bot utterances from end-to-end stories.
  • store_entities_as_slots - If True Rasa will automatically create SlotSet events for entities if there are slots with the same name as the entity.
  • session_config - Configuration for conversation sessions. Conversations are restarted at the end of a session.

__deepcopy__

| __deepcopy__(memo: Optional[Dict[int, Any]]) -> "Domain"

Enables making a deep copy of the Domain using copy.deepcopy.

See https://docs.python.org/3/library/copy.html#copy.deepcopy for more implementation.

Arguments:

  • memo - Optional dictionary of objects already copied during the current copying pass.

Returns:

A deep copy of the current domain.

count_conditional_response_variations

| count_conditional_response_variations() -> int

Returns count of conditional response variations.

__hash__

| __hash__() -> int

Returns a unique hash for the domain.

fingerprint

| fingerprint() -> Text

Returns a unique hash for the domain which is stable across python runs.

Returns:

fingerprint of the domain

user_actions_and_forms

| @rasa.shared.utils.common.lazy_property
| user_actions_and_forms() -> List[Text]

Returns combination of user actions and forms.

action_names

| @rasa.shared.utils.common.lazy_property
| action_names() -> List[Text]

Returns action names or texts.

num_actions

| @rasa.shared.utils.common.lazy_property
| num_actions() -> int

Returns the number of available actions.

num_states

| @rasa.shared.utils.common.lazy_property
| num_states() -> int

Number of used input states for the action prediction.

retrieval_intent_templates

| @rasa.shared.utils.common.lazy_property
| retrieval_intent_templates() -> Dict[Text, List[Dict[Text, Any]]]

Return only the responses which are defined for retrieval intents.

retrieval_intent_responses

| @rasa.shared.utils.common.lazy_property
| retrieval_intent_responses() -> Dict[Text, List[Dict[Text, Any]]]

Return only the responses which are defined for retrieval intents.

templates

| @rasa.shared.utils.common.lazy_property
| templates() -> Dict[Text, List[Dict[Text, Any]]]

Temporary property before templates become completely deprecated.

is_retrieval_intent_template

| @staticmethod
| is_retrieval_intent_template(response: Tuple[Text, List[Dict[Text, Any]]]) -> bool

Check if the response is for a retrieval intent.

These templates have a / symbol in their name. Use that to filter them from the rest.

is_retrieval_intent_response

| @staticmethod
| is_retrieval_intent_response(response: Tuple[Text, List[Dict[Text, Any]]]) -> bool

Check if the response is for a retrieval intent.

These responses have a / symbol in their name. Use that to filter them from the rest.

add_categorical_slot_default_value

| add_categorical_slot_default_value() -> None

See _add_categorical_slot_default_value for docstring.

add_requested_slot

| add_requested_slot() -> None

See _add_categorical_slot_default_value for docstring.

add_knowledge_base_slots

| add_knowledge_base_slots() -> None

See _add_categorical_slot_default_value for docstring.

index_for_action

| index_for_action(action_name: Text) -> int

Looks up which action index corresponds to this action name.

raise_action_not_found_exception

| raise_action_not_found_exception(action_name_or_text: Text) -> NoReturn

Raises exception if action name or text not part of the domain or stories.

Arguments:

  • action_name_or_text - Name of an action or its text in case it's an end-to-end bot utterance.

Raises:

  • ActionNotFoundException - If action_name_or_text are not part of this domain.

random_template_for

| random_template_for(utter_action: Text) -> Optional[Dict[Text, Any]]

Returns a random response for an action name.

Arguments:

  • utter_action - The name of the utter action.

Returns:

A response for an utter action.

slot_states

| @rasa.shared.utils.common.lazy_property
| slot_states() -> List[Text]

Returns all available slot state strings.

entity_states

| @rasa.shared.utils.common.lazy_property
| entity_states() -> List[Text]

Returns all available entity state strings.

concatenate_entity_labels

| @staticmethod
| concatenate_entity_labels(entity_labels: Dict[Text, List[Text]], entity: Optional[Text] = None) -> List[Text]

Concatenates the given entity labels with their corresponding sub-labels.

If a specific entity label is given, only this entity label will be concatenated with its corresponding sub-labels.

Arguments:

  • entity_labels - A map of an entity label to its sub-label list.
  • entity - If present, only this entity will be considered.

Returns:

A list of labels.

input_state_map

| @rasa.shared.utils.common.lazy_property
| input_state_map() -> Dict[Text, int]

Provide a mapping from state names to indices.

input_states

| @rasa.shared.utils.common.lazy_property
| input_states() -> List[Text]

Returns all available states.

get_active_state

| get_active_state(tracker: "DialogueStateTracker", omit_unset_slots: bool = False) -> State

Given a dialogue tracker, makes a representation of current dialogue state.

Arguments:

  • tracker - dialog state tracker containing the dialog so far
  • omit_unset_slots - If True do not include the initial values of slots.

Returns:

A representation of the dialogue's current state.

states_for_tracker_history

| states_for_tracker_history(tracker: "DialogueStateTracker", omit_unset_slots: bool = False, ignore_rule_only_turns: bool = False, rule_only_data: Optional[Dict[Text, Any]] = None) -> List[State]

List of states for each state of the trackers history.

Arguments:

  • tracker - Dialogue state tracker containing the dialogue so far.
  • omit_unset_slots - If True do not include the initial values of slots.
  • ignore_rule_only_turns - If True ignore dialogue turns that are present only in rules.
  • rule_only_data - Slots and loops, which only occur in rules but not in stories.

Returns:

A list of states.

slots_for_entities

| slots_for_entities(entities: List[Dict[Text, Any]]) -> List[SlotSet]

Creates slot events for entities if auto-filling is enabled.

Arguments:

  • entities - The list of entities.

Returns:

A list of SlotSet events.

persist_specification

| persist_specification(model_path: Text) -> None

Persist the domain specification to storage.

load_specification

| @classmethod
| load_specification(cls, path: Text) -> Dict[Text, Any]

Load a domains specification from a dumped model directory.

compare_with_specification

| compare_with_specification(path: Text) -> bool

Compare the domain spec of the current and the loaded domain.

Throws exception if the loaded domain specification is different to the current domain are different.

as_dict

| as_dict() -> Dict[Text, Any]

Return serialized Domain.

get_responses_with_multilines

| @staticmethod
| get_responses_with_multilines(responses: Dict[Text, List[Dict[Text, Any]]]) -> Dict[Text, List[Dict[Text, Any]]]

Returns responses with preserved multilines in the text key.

Arguments:

  • responses - Original responses.

Returns:

responses with preserved multilines in the text key.

cleaned_domain

| cleaned_domain() -> Dict[Text, Any]

Fetch cleaned domain to display or write into a file.

The internal used_entities property is replaced by use_entities or ignore_entities and redundant keys are replaced with default values to make the domain easier readable.

Returns:

A cleaned dictionary version of the domain.

persist

| persist(filename: Union[Text, Path]) -> None

Write domain to a file.

persist_clean

| persist_clean(filename: Union[Text, Path]) -> None

Write cleaned domain to a file.

as_yaml

| as_yaml(clean_before_dump: bool = False) -> Text

Dump the Domain object as a YAML string. This function preserves the orders of the keys in the domain.

Arguments:

  • clean_before_dump - When set to True, this method returns a version of the domain without internal information. Defaults to False.

Returns:

A string in YAML format representing the domain.

intent_config

| intent_config(intent_name: Text) -> Dict[Text, Any]

Return the configuration for an intent.

intents

| @rasa.shared.utils.common.lazy_property
| intents() -> List[Text]

Returns sorted list of intents.

domain_warnings

| domain_warnings(intents: Optional[Union[List[Text], Set[Text]]] = None, entities: Optional[Union[List[Text], Set[Text]]] = None, actions: Optional[Union[List[Text], Set[Text]]] = None, slots: Optional[Union[List[Text], Set[Text]]] = None) -> Dict[Text, Dict[Text, Set[Text]]]

Generate domain warnings from intents, entities, actions and slots.

Returns a dictionary with entries for intent_warnings, entity_warnings, action_warnings and slot_warnings. Excludes domain slots from domain warnings in case they are not featurized.

check_missing_templates

| check_missing_templates() -> None

Warn user of utterance names which have no specified response.

check_missing_responses

| check_missing_responses() -> None

Warn user of utterance names which have no specified response.

is_empty

| is_empty() -> bool

Check whether the domain is empty.

is_domain_file

| @staticmethod
| is_domain_file(filename: Text) -> bool

Checks whether the given file path is a Rasa domain file.

Arguments:

  • filename - Path of the file which should be checked.

Returns:

True if it's a domain file, otherwise False.

Raises:

  • YamlException - if the file seems to be a YAML file (extension) but can not be read / parsed.

slot_mapping_for_form

| slot_mapping_for_form(form_name: Text) -> Dict[Text, Any]

Retrieve the slot mappings for a form which are defined in the domain.

Options:

  • an extracted entity
  • intent: value pairs
  • trigger_intent: value pairs
  • a whole message or a list of them, where the first match will be picked

Arguments:

  • form_name - The name of the form.

Returns:

The slot mapping or an empty dictionary in case no mapping was found.

SlotMapping Objects

class SlotMapping(Enum)

Defines the available slot mappings.

__str__

| __str__() -> Text

Returns a string representation of the object.

validate

| @staticmethod
| validate(mapping: Dict[Text, Any], form_name: Text, slot_name: Text) -> None

Validates a slot mapping.

Arguments:

  • mapping - The mapping which is validated.
  • form_name - The name of the form which uses this slot mapping.
  • slot_name - The name of the slot which is mapped by this mapping.

Raises:

  • InvalidDomain - In case the slot mapping is not valid.