diff --git a/backend/data_export/celery_tasks.py b/backend/data_export/celery_tasks.py
index 5ad93e42..d5f0b8cc 100644
--- a/backend/data_export/celery_tasks.py
+++ b/backend/data_export/celery_tasks.py
@@ -8,9 +8,14 @@ from django.conf import settings
 from django.shortcuts import get_object_or_404
 
 from .pipeline.dataset import Dataset
-from .pipeline.factories import create_formatter, create_labels, create_writer, create_comment
+from .pipeline.factories import (
+    create_comment,
+    create_formatter,
+    create_labels,
+    create_writer,
+)
 from .pipeline.services import ExportApplicationService
-from data_export.models import ExportedExample, ExportedComment
+from data_export.models import ExportedExample
 from projects.models import Member, Project
 
 logger = get_task_logger(__name__)
diff --git a/backend/data_export/models.py b/backend/data_export/models.py
index b4248699..ae6dd201 100644
--- a/backend/data_export/models.py
+++ b/backend/data_export/models.py
@@ -2,7 +2,7 @@ from typing import Any, Dict, Protocol, Tuple
 
 from django.db import models
 
-from examples.models import Example, Comment
+from examples.models import Comment, Example
 from labels.models import Category, Relation, Span, TextLabel
 from projects.models import Project
 
@@ -87,4 +87,3 @@ class ExportedComment(Comment):
 
     class Meta:
         proxy = True
-
diff --git a/backend/data_export/pipeline/comments.py b/backend/data_export/pipeline/comments.py
index 4aeb6bab..1e42428e 100644
--- a/backend/data_export/pipeline/comments.py
+++ b/backend/data_export/pipeline/comments.py
@@ -4,10 +4,8 @@ from typing import Dict, List, Tuple
 
 from django.db.models import QuerySet
 
-from data_export.models import (
-    ExportedExample,
-    ExportedComment,
-)
+from data_export.models import ExportedComment, ExportedExample
+
 
 class Comments(abc.ABC):
     comment_class = ExportedComment
diff --git a/backend/data_export/pipeline/dataset.py b/backend/data_export/pipeline/dataset.py
index 0bee9179..c2c85c84 100644
--- a/backend/data_export/pipeline/dataset.py
+++ b/backend/data_export/pipeline/dataset.py
@@ -3,14 +3,15 @@ from typing import Any, Dict, Iterator, List
 import pandas as pd
 from django.db.models.query import QuerySet
 
-from .labels import Labels
 from .comments import Comments
-from data_export.models import ExportedExample, ExportedComment
+from .labels import Labels
+from data_export.models import ExportedExample
 
 
 class Dataset:
-    def __init__(self, examples: QuerySet[ExportedExample], labels: List[Labels], comments: List[Comments],
-                 is_text_project=True):
+    def __init__(
+        self, examples: QuerySet[ExportedExample], labels: List[Labels], comments: List[Comments], is_text_project=True
+    ):
         self.examples = examples
         self.labels = labels
         self.is_text_project = is_text_project
diff --git a/backend/data_export/pipeline/factories.py b/backend/data_export/pipeline/factories.py
index 12e4afce..be139819 100644
--- a/backend/data_export/pipeline/factories.py
+++ b/backend/data_export/pipeline/factories.py
@@ -4,6 +4,7 @@ from django.db.models import QuerySet
 
 from . import writers
 from .catalog import CSV, JSON, JSONL, FastText
+from .comments import Comments
 from .formatters import (
     DictFormatter,
     FastTextCategoryFormatter,
@@ -14,8 +15,7 @@ from .formatters import (
     TupledSpanFormatter,
 )
 from .labels import Categories, Labels, Relations, Spans, Texts
-from .comments import Comments
-from data_export.models import DATA, ExportedExample, ExportedComment
+from data_export.models import DATA, ExportedExample
 from projects.models import (
     DOCUMENT_CLASSIFICATION,
     IMAGE_CLASSIFICATION,