diff --git a/__init__.py b/__init__.py
index 33bd6c0..d21e8f3 100644
--- a/__init__.py
+++ b/__init__.py
@@ -1,7 +1,7 @@
 # Copyright: Ren Tatsumoto <tatsu at autistici.org>
 # License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 
-from . import merge_duplicates, merge_notes, settings_dialog, duplicate_notes, find_duplicates
+from . import duplicate_notes, find_duplicates, merge_duplicates, merge_notes, settings_dialog
 
 merge_notes.init()
 merge_duplicates.init()
diff --git a/config.py b/config.py
index 7241f9b..b8fc5df 100644
--- a/config.py
+++ b/config.py
@@ -2,7 +2,7 @@
 # License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 
 import sys
-from typing import Callable, Any
+from typing import Any, Callable
 
 from anki.cards import Card
 
@@ -63,7 +63,7 @@ def names(cls):
 class Config(AddonConfigManager):
     _ordering_choices = OrderingChoices()
 
-    def __init__(self, default: bool = False):
+    def __init__(self, default: bool = False) -> None:
         super().__init__(default)
         if self["ordering"] not in self._ordering_choices.names():
             print(f"Wrong ordering: {self['ordering']}")
diff --git a/duplicate_notes.py b/duplicate_notes.py
index 0ac051a..c34a44d 100644
--- a/duplicate_notes.py
+++ b/duplicate_notes.py
@@ -3,7 +3,7 @@
 
 from collections.abc import Sequence
 
-from anki.collection import Collection, OpChanges, AddNoteRequest
+from anki.collection import AddNoteRequest, Collection, OpChanges
 from anki.decks import DeckId
 from anki.notes import Note
 from aqt import gui_hooks
diff --git a/find_duplicates.py b/find_duplicates.py
index 8319a4e..57aea60 100644
--- a/find_duplicates.py
+++ b/find_duplicates.py
@@ -4,15 +4,14 @@
 from collections.abc import Iterable
 
 import aqt
-from anki.collection import Collection
-from anki.collection import SearchNode
+from anki.collection import Collection, SearchNode
 from anki.hooks import wrap
 from anki.notes import Note, NoteId
 from aqt.browser import Browser
 from aqt.browser.find_duplicates import FindDuplicatesDialog
 from aqt.qt import *
 
-from .config import config, ACTION_NAME
+from .config import ACTION_NAME, config
 from .merge_duplicates import carefully_get_notes
 from .merge_notes import cfg_strip
 
diff --git a/merge_duplicates.py b/merge_duplicates.py
index ab82c56..a5cc0e8 100644
--- a/merge_duplicates.py
+++ b/merge_duplicates.py
@@ -1,13 +1,13 @@
 # Copyright: Ren Tatsumoto <tatsu at autistici.org>
 # License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 
-from typing import Optional
 from collections.abc import Sequence
+from typing import Optional
 
 import anki.errors
-from anki.collection import OpChanges, Collection
+from anki.collection import Collection, OpChanges
 from anki.hooks import wrap
-from anki.notes import NoteId, Note
+from anki.notes import Note, NoteId
 from aqt.browser.find_duplicates import FindDuplicatesDialog
 from aqt.operations import CollectionOp
 from aqt.qt import *
diff --git a/merge_notes.py b/merge_notes.py
index 7681848..f91e3d6 100644
--- a/merge_notes.py
+++ b/merge_notes.py
@@ -4,7 +4,7 @@
 import itertools
 import re
 import unicodedata
-from collections.abc import Sequence, Iterator, Iterable
+from collections.abc import Iterable, Iterator, Sequence
 from typing import Any
 
 from anki import collection
@@ -18,8 +18,7 @@
 from aqt.qt import *
 from aqt.utils import tooltip
 
-from .config import config, ACTION_NAME
-
+from .config import ACTION_NAME, config
 
 ######################################################################
 # Utils
diff --git a/settings_dialog.py b/settings_dialog.py
index 4a6ed60..cf6cd46 100644
--- a/settings_dialog.py
+++ b/settings_dialog.py
@@ -4,19 +4,18 @@
 import functools
 from collections.abc import Iterable
 
-from aqt import mw, gui_hooks
+from aqt import gui_hooks, mw
 from aqt.browser import Browser
 from aqt.qt import *
 from aqt.utils import restoreGeom, saveGeom
 
-from .ajt_common.widget_placement import place_widgets_in_grid
 from .ajt_common.about_menu import menu_root_entry, tweak_window
 from .ajt_common.anki_field_selector import AnkiFieldSelector, gather_all_field_names
 from .ajt_common.grab_key import ShortCutGrabButton
 from .ajt_common.monospace_line_edit import MonoSpaceLineEdit
 from .ajt_common.multiple_choice_selector import MultipleChoiceSelector
-from .config import OrderingChoices, Config, config, ACTION_NAME
-
+from .ajt_common.widget_placement import place_widgets_in_grid
+from .config import ACTION_NAME, Config, OrderingChoices, config
 
 ######################################################################
 # UI Layout