Source code for

# Copyright 2020 The Forte Authors. All Rights Reserved.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# See the License for the specific language governing permissions and
# limitations under the License.
Create a few common functions that are frequently used to interact with
built-in ontology data types.
from typing import Optional

from import DataPack
from ft.onto.base_ontology import Utterance

__all__ = [

[docs]def get_last_utterance( input_pack: DataPack, target_speaker: str ) -> Optional[Utterance]: """ Get the last utterance from a particular speaker. An utterance is an entry of type :class:`~ft.onto.base_ontology.Utterance` Args: input_pack: The data pack to find utterances. target_speaker: The name of the target speaker. Returns: The last Utterance from the speaker if found, None otherwise. """ utterance: Optional[Utterance] = None u: Utterance for u in input_pack.get(Utterance): if u.speaker == target_speaker: utterance = u return utterance
[docs]def create_utterance(input_pack: DataPack, text: str, speaker: str): """ Create an utterance in the datapack. This is composed of two steps: 1. Append the utterance text to the data pack. 2. Create :class:`~ft.onto.base_ontology.Utterance` entry on the text. 3. Set the speaker of the utterance to the provided `speaker`. Args: input_pack: The data pack to add utterance into. text: The text of the utterance. speaker: The speaker name to be associated with the utterance. """ input_pack.set_text(input_pack.text + "\n" + text) u = Utterance( input_pack, len(input_pack.text) - len(text), len(input_pack.text) ) u.speaker = speaker