diff --git a/tests/conftest.py b/tests/conftest.py
index d8407d28..765755bf 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import logging
@@ -70,8 +70,6 @@ def resetConfigVars():
     CONFIG.emphLabels = True
     CONFIG.lineHighlight = True
 
-    return
-
 
 ##
 #  Auto Fixtures
@@ -88,7 +86,6 @@ def sessionFixture():
     (_TMP_ROOT / "manual.pdf").touch()
     (_SRC_ROOT / "novelwriter" / "assets"/ "manual.pdf").touch()
     (_SRC_ROOT / "novelwriter" / "assets"/ "manual_fr.pdf").touch()
-    return
 
 
 @pytest.fixture(scope="function", autouse=True)
@@ -107,8 +104,6 @@ def functionFixture(qtbot):
     resetConfigVars()
     logging.getLogger("novelwriter").setLevel(logging.INFO)
 
-    return
-
 
 ##
 #  Core Test Folders
@@ -251,13 +246,11 @@ def prjLipsum():
     if dstDir.exists():
         shutil.rmtree(dstDir)
 
-    return
-
 
 @pytest.fixture(scope="session")
 def ipsumText():
     """Return five paragraphs of Lorem Ipsum text."""
-    thatIpsum = [(
+    return [(
         "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nunc maximus justo non dictum co"
         "mmodo. Curabitur lacinia tempor orci vel luctus. Phasellus porta metus eu massa luctus, e"
         "get euismod risus rhoncus. Vestibulum sed arcu nisi. Maecenas pretium facilisis velit, ve"
@@ -305,4 +298,3 @@ def ipsumText():
         " a nisl. Etiam eget tristique dui. Nulla sed mi finibus, venenatis tellus non, maximus en"
         "im."
     )]
-    return thatIpsum
diff --git a/tests/mocked.py b/tests/mocked.py
index 37cad04c..f86d5be0 100644
--- a/tests/mocked.py
+++ b/tests/mocked.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 from unittest.mock import MagicMock
@@ -35,7 +35,6 @@ class MockGuiMain(QWidget):
         self.docViewer = MagicMock()
         self.mainProgress = MagicMock()
         self.projPath = ""
-        return
 
     def postLaunchTasks(self, cmdOpen):
         return
@@ -45,7 +44,6 @@ class MockGuiMain(QWidget):
 
     def openProject(self, projPath):
         self.projPath = projPath
-        return
 
     def rebuildIndex(self):
         return
@@ -64,7 +62,6 @@ class MockTheme:
         self.guiFont = QFont()
         self.guiFontB = QFont()
         self.guiFontBU = QFont()
-        return
 
     def initThemes(self) -> None:
         return
@@ -96,8 +93,10 @@ class MockApp:
 # Mock functions that will raise errors instead.
 
 def causeOSError(*args, **kwargs):
+    """Raise an OSError."""
     raise OSError("Mock OSError")
 
 
 def causeException(*args, **kwargs):
+    """Raise an Exception."""
     raise Exception("Mock Exception")
diff --git a/tests/test_base/test_base_common.py b/tests/test_base/test_base_common.py
index a46f02d0..95d339df 100644
--- a/tests/test_base/test_base_common.py
+++ b/tests/test_base/test_base_common.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import time
@@ -794,7 +794,6 @@ def testBaseCommon_openExternalPath(monkeypatch, tstPaths):
     def mockOpenUrl(url: QUrl) -> None:
         nonlocal lastUrl
         lastUrl = url.toString()
-        return
 
     monkeypatch.setattr(QDesktopServices, "openUrl", mockOpenUrl)
     assert openExternalPath(Path("/foo/bar")) is False
diff --git a/tests/test_base/test_base_config.py b/tests/test_base/test_base_config.py
index 98a1063d..901aa1ee 100644
--- a/tests/test_base/test_base_config.py
+++ b/tests/test_base/test_base_config.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import datetime
diff --git a/tests/test_base/test_base_error.py b/tests/test_base/test_base_error.py
index 65499666..9a8c1bd3 100644
--- a/tests/test_base/test_base_error.py
+++ b/tests/test_base/test_base_error.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import sys
diff --git a/tests/test_base/test_base_init.py b/tests/test_base/test_base_init.py
index cc1fbeb8..45ac3c79 100644
--- a/tests/test_base/test_base_init.py
+++ b/tests/test_base/test_base_init.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import logging
@@ -40,7 +40,7 @@ from tests.tools import clearLogHandlers
 
 @pytest.mark.base
 def testBaseInit_Launch(caplog, monkeypatch, fncPath):
-    """Check launching the main GUI. This test """
+    """Check launching the main GUI."""
     monkeypatch.setattr(NSplashScreen, "finish", lambda *a: None)
     monkeypatch.setattr("novelwriter.splash.sleep", lambda *a: None)
     monkeypatch.setattr("novelwriter._createApp", lambda *a: Mock())
diff --git a/tests/test_base/test_base_shared.py b/tests/test_base/test_base_shared.py
index 8873b5b3..64cc306b 100644
--- a/tests/test_base/test_base_shared.py
+++ b/tests/test_base/test_base_shared.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 from unittest.mock import MagicMock
diff --git a/tests/test_core/test_core_buildsettings.py b/tests/test_core/test_core_buildsettings.py
index 2b21b673..d51406b3 100644
--- a/tests/test_core/test_core_buildsettings.py
+++ b/tests/test_core/test_core_buildsettings.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import json
@@ -39,7 +39,7 @@ from tests.tools import C, buildTestProject
 
 
 def isUUID(value):
-    """Checks if a value is a valid UUID object."""
+    """Check if a value is a valid UUID object."""
     try:
         uuid.UUID(value)
         return True
diff --git a/tests/test_core/test_core_coretools.py b/tests/test_core/test_core_coretools.py
index 0bd4b24c..da4e5551 100644
--- a/tests/test_core/test_core_coretools.py
+++ b/tests/test_core/test_core_coretools.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import shutil
@@ -669,7 +669,6 @@ def testCoreTools_ProjectBuilderCopyPlain(monkeypatch, caplog, mockGUI, prjLipsu
 @pytest.mark.core
 def testCoreTools_ProjectBuilderCopyZipped(monkeypatch, caplog, mockGUI, fncPath, mockRnd):
     """Create a new project copied from existing zipped project."""
-
     # Create a project
     origPath = fncPath / "original"
     srcProject = NWProject()
diff --git a/tests/test_core/test_core_docbuild.py b/tests/test_core/test_core_docbuild.py
index 15655298..0a7efee8 100644
--- a/tests/test_core/test_core_docbuild.py
+++ b/tests/test_core/test_core_docbuild.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import json
diff --git a/tests/test_core/test_core_document.py b/tests/test_core/test_core_document.py
index 666a85af..78a14240 100644
--- a/tests/test_core/test_core_document.py
+++ b/tests/test_core/test_core_document.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import pytest
diff --git a/tests/test_core/test_core_index.py b/tests/test_core/test_core_index.py
index e86b8dc0..332c27c3 100644
--- a/tests/test_core/test_core_index.py
+++ b/tests/test_core/test_core_index.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import json
diff --git a/tests/test_core/test_core_indexdata.py b/tests/test_core/test_core_indexdata.py
index d4797aee..faef5d51 100644
--- a/tests/test_core/test_core_indexdata.py
+++ b/tests/test_core/test_core_indexdata.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import pytest
diff --git a/tests/test_core/test_core_item.py b/tests/test_core/test_core_item.py
index f6cd4278..1b6dba2d 100644
--- a/tests/test_core/test_core_item.py
+++ b/tests/test_core/test_core_item.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import copy
@@ -491,8 +491,7 @@ def testCoreItem_LayoutSetter(mockGUI):
 
 @pytest.mark.core
 def testCoreItem_ClassDefaults(mockGUI):
-    """Test the setter for the default values.
-    """
+    """Test the setter for the default values."""
     project = NWProject()
     item = NWItem(project, "0000000000000")
 
diff --git a/tests/test_core/test_core_itemmodel.py b/tests/test_core/test_core_itemmodel.py
index d6efd718..2869b7e5 100644
--- a/tests/test_core/test_core_itemmodel.py
+++ b/tests/test_core/test_core_itemmodel.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import pytest
diff --git a/tests/test_core/test_core_novelmodel.py b/tests/test_core/test_core_novelmodel.py
index 22955c70..a2835ec0 100644
--- a/tests/test_core/test_core_novelmodel.py
+++ b/tests/test_core/test_core_novelmodel.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import pytest
diff --git a/tests/test_core/test_core_options.py b/tests/test_core/test_core_options.py
index 51a45c8c..b830b0be 100644
--- a/tests/test_core/test_core_options.py
+++ b/tests/test_core/test_core_options.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import json
diff --git a/tests/test_core/test_core_project.py b/tests/test_core/test_core_project.py
index b72c8132..cdb202c1 100644
--- a/tests/test_core/test_core_project.py
+++ b/tests/test_core/test_core_project.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 from shutil import copyfile
diff --git a/tests/test_core/test_core_projectxml.py b/tests/test_core/test_core_projectxml.py
index ebccbbfa..efcd71a0 100644
--- a/tests/test_core/test_core_projectxml.py
+++ b/tests/test_core/test_core_projectxml.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import json
@@ -53,7 +53,6 @@ def mockVersion(monkeypatch):
     """Mock the version info to prevent diff from failing."""
     monkeypatch.setattr("novelwriter.core.projectxml.__version__", "2.7b1")
     monkeypatch.setattr("novelwriter.core.projectxml.__hexversion__", "0x020700b1")
-    return
 
 
 @pytest.mark.core
diff --git a/tests/test_core/test_core_sessions.py b/tests/test_core/test_core_sessions.py
index d601fcd7..af47a4aa 100644
--- a/tests/test_core/test_core_sessions.py
+++ b/tests/test_core/test_core_sessions.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 from pathlib import Path
diff --git a/tests/test_core/test_core_spellcheck.py b/tests/test_core/test_core_spellcheck.py
index e96b1657..6c8af4bf 100644
--- a/tests/test_core/test_core_spellcheck.py
+++ b/tests/test_core/test_core_spellcheck.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import sys
diff --git a/tests/test_core/test_core_status.py b/tests/test_core/test_core_status.py
index 7927678e..35a2b944 100644
--- a/tests/test_core/test_core_status.py
+++ b/tests/test_core/test_core_status.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import pytest
diff --git a/tests/test_core/test_core_storage.py b/tests/test_core/test_core_storage.py
index 6e006d43..bbc68a44 100644
--- a/tests/test_core/test_core_storage.py
+++ b/tests/test_core/test_core_storage.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import json
@@ -40,6 +40,7 @@ from tests.tools import C, buildTestProject
 
 class MockProject:
     """Test class for projects."""
+
     pass
 
 
diff --git a/tests/test_core/test_core_tree.py b/tests/test_core/test_core_tree.py
index 432ae8f7..9184a51a 100644
--- a/tests/test_core/test_core_tree.py
+++ b/tests/test_core/test_core_tree.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import random
diff --git a/tests/test_dialogs/test_dlg_about.py b/tests/test_dialogs/test_dlg_about.py
index bde9ad7d..f143dd36 100644
--- a/tests/test_dialogs/test_dlg_about.py
+++ b/tests/test_dialogs/test_dlg_about.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 from pathlib import Path
diff --git a/tests/test_dialogs/test_dlg_dialogs.py b/tests/test_dialogs/test_dlg_dialogs.py
index ce3d6bc3..50359218 100644
--- a/tests/test_dialogs/test_dlg_dialogs.py
+++ b/tests/test_dialogs/test_dlg_dialogs.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import pytest
diff --git a/tests/test_dialogs/test_dlg_docmerge.py b/tests/test_dialogs/test_dlg_docmerge.py
index 7431b3d7..0361fd12 100644
--- a/tests/test_dialogs/test_dlg_docmerge.py
+++ b/tests/test_dialogs/test_dlg_docmerge.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import pytest
diff --git a/tests/test_dialogs/test_dlg_docsplit.py b/tests/test_dialogs/test_dlg_docsplit.py
index bd75ca01..38dda722 100644
--- a/tests/test_dialogs/test_dlg_docsplit.py
+++ b/tests/test_dialogs/test_dlg_docsplit.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import pytest
diff --git a/tests/test_dialogs/test_dlg_preferences.py b/tests/test_dialogs/test_dlg_preferences.py
index 03b23a01..dd749aa5 100644
--- a/tests/test_dialogs/test_dlg_preferences.py
+++ b/tests/test_dialogs/test_dlg_preferences.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import pytest
diff --git a/tests/test_dialogs/test_dlg_projectsettings.py b/tests/test_dialogs/test_dlg_projectsettings.py
index c20382d1..0219e359 100644
--- a/tests/test_dialogs/test_dlg_projectsettings.py
+++ b/tests/test_dialogs/test_dlg_projectsettings.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import pytest
diff --git a/tests/test_dialogs/test_dlg_wordlist.py b/tests/test_dialogs/test_dlg_wordlist.py
index 9b42d5a7..f4cd819b 100644
--- a/tests/test_dialogs/test_dlg_wordlist.py
+++ b/tests/test_dialogs/test_dlg_wordlist.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import pytest
@@ -37,7 +37,7 @@ from tests.tools import buildTestProject
 
 @pytest.mark.gui
 def testDlgWordList_Dialog(qtbot, monkeypatch, nwGUI, fncPath, projPath):
-    """test the word list editor."""
+    """Test the word list editor."""
     buildTestProject(nwGUI, projPath)
 
     monkeypatch.setattr(GuiWordList, "exec", lambda *a: None)
diff --git a/tests/test_ext/test_ext_eventfilters.py b/tests/test_ext/test_ext_eventfilters.py
index 628932f1..feb998d1 100644
--- a/tests/test_ext/test_ext_eventfilters.py
+++ b/tests/test_ext/test_ext_eventfilters.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import pytest
@@ -35,11 +35,9 @@ class MockWidget(QWidget):
     def __init__(self):
         super().__init__(None)
         self.count = 0
-        return
 
     def wheelEvent(self, event: QWheelEvent) -> None:
         self.count += 1
-        return
 
 
 @pytest.mark.gui
diff --git a/tests/test_ext/test_ext_modified.py b/tests/test_ext/test_ext_modified.py
index 844d47a6..7e65de1a 100644
--- a/tests/test_ext/test_ext_modified.py
+++ b/tests/test_ext/test_ext_modified.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import pytest
@@ -43,12 +43,10 @@ class MockWheelEvent(QWheelEvent):
             Qt.ScrollPhase.ScrollUpdate, False
         )
         self.ignored = False
-        return
 
     def ignore(self):
         super().ignore()
         self.ignored = True
-        return
 
 
 @pytest.mark.gui
diff --git a/tests/test_ext/test_ext_progressbars.py b/tests/test_ext/test_ext_progressbars.py
index f0d1e292..0cd8c80a 100644
--- a/tests/test_ext/test_ext_progressbars.py
+++ b/tests/test_ext/test_ext_progressbars.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 from time import sleep
diff --git a/tests/test_ext/test_ext_switch.py b/tests/test_ext/test_ext_switch.py
index 734a2257..edf05a92 100644
--- a/tests/test_ext/test_ext_switch.py
+++ b/tests/test_ext/test_ext_switch.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import pytest
diff --git a/tests/test_ext/test_ext_versioninfo.py b/tests/test_ext/test_ext_versioninfo.py
index cbf1428c..a5cedc54 100644
--- a/tests/test_ext/test_ext_versioninfo.py
+++ b/tests/test_ext/test_ext_versioninfo.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 from urllib.error import HTTPError
@@ -44,7 +44,6 @@ class MockDesktopServices:
     @staticmethod
     def openUrl(url):
         MockDesktopServices.url = url
-        return
 
 
 class MockData:
@@ -61,8 +60,7 @@ class MockPayload:
         return
 
     def read(self):
-        data = MockData()
-        return data
+        return MockData()
 
 
 class MockHTTPError:
diff --git a/tests/test_formats/test_fmt_todocx.py b/tests/test_formats/test_fmt_todocx.py
index bf643739..eb88888a 100644
--- a/tests/test_formats/test_fmt_todocx.py
+++ b/tests/test_formats/test_fmt_todocx.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import xml.etree.ElementTree as ET
diff --git a/tests/test_formats/test_fmt_tohtml.py b/tests/test_formats/test_fmt_tohtml.py
index c3bd64a7..a7479d02 100644
--- a/tests/test_formats/test_fmt_tohtml.py
+++ b/tests/test_formats/test_fmt_tohtml.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import json
diff --git a/tests/test_formats/test_fmt_tokenizer.py b/tests/test_formats/test_fmt_tokenizer.py
index 63c9cab0..dd61b3ea 100644
--- a/tests/test_formats/test_fmt_tokenizer.py
+++ b/tests/test_formats/test_fmt_tokenizer.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import pytest
diff --git a/tests/test_formats/test_fmt_tomarkdown.py b/tests/test_formats/test_fmt_tomarkdown.py
index 90f26ff7..84c0dbc9 100644
--- a/tests/test_formats/test_fmt_tomarkdown.py
+++ b/tests/test_formats/test_fmt_tomarkdown.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import pytest
diff --git a/tests/test_formats/test_fmt_toodt.py b/tests/test_formats/test_fmt_toodt.py
index eded1eeb..a859f6b9 100644
--- a/tests/test_formats/test_fmt_toodt.py
+++ b/tests/test_formats/test_fmt_toodt.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import xml.etree.ElementTree as ET
diff --git a/tests/test_formats/test_fmt_toqdoc.py b/tests/test_formats/test_fmt_toqdoc.py
index 697d4833..04d51fdd 100644
--- a/tests/test_formats/test_fmt_toqdoc.py
+++ b/tests/test_formats/test_fmt_toqdoc.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import pytest
diff --git a/tests/test_gui/test_gui_doceditor.py b/tests/test_gui/test_gui_doceditor.py
index d0ec924d..13589957 100644
--- a/tests/test_gui/test_gui_doceditor.py
+++ b/tests/test_gui/test_gui_doceditor.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 from unittest.mock import MagicMock
diff --git a/tests/test_gui/test_gui_dochighlighter.py b/tests/test_gui/test_gui_dochighlighter.py
index 622154c2..2df0d39e 100644
--- a/tests/test_gui/test_gui_dochighlighter.py
+++ b/tests/test_gui/test_gui_dochighlighter.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import pytest
diff --git a/tests/test_gui/test_gui_docviewer.py b/tests/test_gui/test_gui_docviewer.py
index 8890df22..ac16173b 100644
--- a/tests/test_gui/test_gui_docviewer.py
+++ b/tests/test_gui/test_gui_docviewer.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 from unittest.mock import MagicMock
diff --git a/tests/test_gui/test_gui_docviewerpanel.py b/tests/test_gui/test_gui_docviewerpanel.py
index f51d9a81..32c3c54e 100644
--- a/tests/test_gui/test_gui_docviewerpanel.py
+++ b/tests/test_gui/test_gui_docviewerpanel.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import pytest
diff --git a/tests/test_gui/test_gui_guimain.py b/tests/test_gui/test_gui_guimain.py
index 1ebfa42c..258d5e0a 100644
--- a/tests/test_gui/test_gui_guimain.py
+++ b/tests/test_gui/test_gui_guimain.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import shutil
diff --git a/tests/test_gui/test_gui_i18n.py b/tests/test_gui/test_gui_i18n.py
index aab521ce..915d83a4 100644
--- a/tests/test_gui/test_gui_i18n.py
+++ b/tests/test_gui/test_gui_i18n.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import sys
diff --git a/tests/test_gui/test_gui_mainmenu.py b/tests/test_gui/test_gui_mainmenu.py
index b13b18a1..9c327cda 100644
--- a/tests/test_gui/test_gui_mainmenu.py
+++ b/tests/test_gui/test_gui_mainmenu.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 from unittest.mock import MagicMock
diff --git a/tests/test_gui/test_gui_noveltree.py b/tests/test_gui/test_gui_noveltree.py
index cd726e0a..39938a3e 100644
--- a/tests/test_gui/test_gui_noveltree.py
+++ b/tests/test_gui/test_gui_noveltree.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 from pathlib import Path
diff --git a/tests/test_gui/test_gui_outline.py b/tests/test_gui/test_gui_outline.py
index 8ee650df..f93171dc 100644
--- a/tests/test_gui/test_gui_outline.py
+++ b/tests/test_gui/test_gui_outline.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import time
diff --git a/tests/test_gui/test_gui_projtree.py b/tests/test_gui/test_gui_projtree.py
index 02216700..f6430f55 100644
--- a/tests/test_gui/test_gui_projtree.py
+++ b/tests/test_gui/test_gui_projtree.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 from unittest.mock import MagicMock
diff --git a/tests/test_gui/test_gui_search.py b/tests/test_gui/test_gui_search.py
index 3110fa3e..a4065dbf 100644
--- a/tests/test_gui/test_gui_search.py
+++ b/tests/test_gui/test_gui_search.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 from time import time
diff --git a/tests/test_gui/test_gui_sidebar.py b/tests/test_gui/test_gui_sidebar.py
index 45e372db..e4ec983e 100644
--- a/tests/test_gui/test_gui_sidebar.py
+++ b/tests/test_gui/test_gui_sidebar.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import pytest
diff --git a/tests/test_gui/test_gui_statusbar.py b/tests/test_gui/test_gui_statusbar.py
index efb19f48..19c3f277 100644
--- a/tests/test_gui/test_gui_statusbar.py
+++ b/tests/test_gui/test_gui_statusbar.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import time
diff --git a/tests/test_gui/test_gui_theme.py b/tests/test_gui/test_gui_theme.py
index aa2af3cf..aa613bd5 100644
--- a/tests/test_gui/test_gui_theme.py
+++ b/tests/test_gui/test_gui_theme.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import json
diff --git a/tests/test_text/test_text_comments.py b/tests/test_text/test_text_comments.py
index 30be4e37..9b42294e 100644
--- a/tests/test_text/test_text_comments.py
+++ b/tests/test_text/test_text_comments.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import pytest
diff --git a/tests/test_text/test_text_counting.py b/tests/test_text/test_text_counting.py
index 8accab95..d7661e18 100644
--- a/tests/test_text/test_text_counting.py
+++ b/tests/test_text/test_text_counting.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import pytest
diff --git a/tests/test_text/test_text_patterns.py b/tests/test_text/test_text_patterns.py
index 2670401e..1325b1d6 100644
--- a/tests/test_text/test_text_patterns.py
+++ b/tests/test_text/test_text_patterns.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import re
diff --git a/tests/test_tools/test_tools_dictionaries.py b/tests/test_tools/test_tools_dictionaries.py
index e8a23c7b..b22ec074 100644
--- a/tests/test_tools/test_tools_dictionaries.py
+++ b/tests/test_tools/test_tools_dictionaries.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 from zipfile import ZipFile
diff --git a/tests/test_tools/test_tools_lipsum.py b/tests/test_tools/test_tools_lipsum.py
index 27098b5c..b73a78f3 100644
--- a/tests/test_tools/test_tools_lipsum.py
+++ b/tests/test_tools/test_tools_lipsum.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import pytest
diff --git a/tests/test_tools/test_tools_manusbuild.py b/tests/test_tools/test_tools_manusbuild.py
index 50d04391..91924120 100644
--- a/tests/test_tools/test_tools_manusbuild.py
+++ b/tests/test_tools/test_tools_manusbuild.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 from pathlib import Path
@@ -143,7 +143,6 @@ def testToolManuscriptBuild_Main(
     def mockOpenUrl(url: QUrl) -> None:
         nonlocal lastUrl
         lastUrl = url.toString()
-        return
 
     with monkeypatch.context() as mp:
         mp.setattr(QDesktopServices, "openUrl", mockOpenUrl)
diff --git a/tests/test_tools/test_tools_manuscript.py b/tests/test_tools/test_tools_manuscript.py
index 070b5db6..0e498ea1 100644
--- a/tests/test_tools/test_tools_manuscript.py
+++ b/tests/test_tools/test_tools_manuscript.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import sys
diff --git a/tests/test_tools/test_tools_manussettings.py b/tests/test_tools/test_tools_manussettings.py
index 91a9f4f9..b5ce7880 100644
--- a/tests/test_tools/test_tools_manussettings.py
+++ b/tests/test_tools/test_tools_manussettings.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import pytest
diff --git a/tests/test_tools/test_tools_noveldetails.py b/tests/test_tools/test_tools_noveldetails.py
index 067cbc08..64428cdf 100644
--- a/tests/test_tools/test_tools_noveldetails.py
+++ b/tests/test_tools/test_tools_noveldetails.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import pytest
diff --git a/tests/test_tools/test_tools_welcome.py b/tests/test_tools/test_tools_welcome.py
index 42157b2d..846e3900 100644
--- a/tests/test_tools/test_tools_welcome.py
+++ b/tests/test_tools/test_tools_welcome.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 from datetime import datetime
diff --git a/tests/test_tools/test_tools_writingstats.py b/tests/test_tools/test_tools_writingstats.py
index 0e2bc4ee..1992096a 100644
--- a/tests/test_tools/test_tools_writingstats.py
+++ b/tests/test_tools/test_tools_writingstats.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import json
diff --git a/tests/tools.py b/tests/tools.py
index 7acc598f..9eec20d0 100644
--- a/tests/tools.py
+++ b/tests/tools.py
@@ -17,7 +17,7 @@ General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
-"""
+"""  # noqa
 from __future__ import annotations
 
 import shutil
@@ -124,7 +124,7 @@ def xmlToText(xElem):
 
 
 def readFile(fileName: str | Path):
-    """Returns the content of a file as a string."""
+    """Return the content of a file as a string."""
     with open(fileName, mode="r", encoding="utf-8") as inFile:
         return inFile.read()
 
@@ -154,8 +154,6 @@ def cleanProject(path: str | Path):
     if tocFile.is_file():
         tocFile.unlink()
 
-    return
-
 
 def clearLogHandlers():
     """Clear all log handlers."""
@@ -235,7 +233,6 @@ class SimpleDialog(QDialog):
         self.setLayout(layout)
         if widget:
             layout.addWidget(widget)
-        return
 
     @property
     def widget(self) -> QWidget | None:
@@ -246,4 +243,3 @@ class SimpleDialog(QDialog):
         layout = self.layout()
         assert layout is not None
         layout.addWidget(widget)
-        return