improve: introduce isort for linting Python imports (#1983)

api/services/dataset_service.py

@@ -1,29 +1,26 @@
+import datetime
 import json
 import logging
-import datetime
-import time
 import random
+import time
 import uuid
-from typing import Optional, List, cast
+from typing import List, Optional, cast
 
-from flask import current_app
-from sqlalchemy import func
-
-from core.index.index import IndexBuilder
 from core.errors.error import LLMBadRequestError, ProviderTokenNotInitError
+from core.index.index import IndexBuilder
 from core.model_manager import ModelManager
 from core.model_runtime.entities.model_entities import ModelType
 from core.model_runtime.model_providers.__base.text_embedding_model import TextEmbeddingModel
-from extensions.ext_redis import redis_client
-from flask_login import current_user
-
 from events.dataset_event import dataset_was_deleted
 from events.document_event import document_was_deleted
 from extensions.ext_database import db
+from extensions.ext_redis import redis_client
+from flask import current_app
+from flask_login import current_user
 from libs import helper
 from models.account import Account
-from models.dataset import Dataset, Document, DatasetQuery, DatasetProcessRule, AppDatasetJoin, DocumentSegment, \
-    DatasetCollectionBinding
+from models.dataset import (AppDatasetJoin, Dataset, DatasetCollectionBinding, DatasetProcessRule, DatasetQuery,
+                            Document, DocumentSegment)
 from models.model import UploadFile
 from models.source import DataSourceBinding
 from services.errors.account import NoPermissionError
@@ -31,12 +28,13 @@ from services.errors.dataset import DatasetNameDuplicateError
 from services.errors.document import DocumentIndexingError
 from services.errors.file import FileNotExistsError
 from services.vector_service import VectorService
+from sqlalchemy import func
 from tasks.clean_notion_document_task import clean_notion_document_task
 from tasks.deal_dataset_vector_index_task import deal_dataset_vector_index_task
+from tasks.delete_segment_from_index_task import delete_segment_from_index_task
 from tasks.document_indexing_task import document_indexing_task
 from tasks.document_indexing_update_task import document_indexing_update_task
 from tasks.recover_document_indexing_task import recover_document_indexing_task
-from tasks.delete_segment_from_index_task import delete_segment_from_index_task
 
 
 class DatasetService: