diff --git a/datamodel/app/extensions/demo_extension/002_demo.py b/datamodel/app/extensions/demo_extension/002_demo.py
index 4c64ff0c9..74347dd57 100644
--- a/datamodel/app/extensions/demo_extension/002_demo.py
+++ b/datamodel/app/extensions/demo_extension/002_demo.py
@@ -1,7 +1,4 @@
-import argparse
-
-
-def demo(myVariable,myNumber):
+def demo(myVariable, myNumber):
     print(f"{myVariable}! My favorite number is {myNumber}")
 
 
diff --git a/datamodel/app/extensions/extension_manager.py b/datamodel/app/extensions/extension_manager.py
index 2cdd05607..68caaa59a 100644
--- a/datamodel/app/extensions/extension_manager.py
+++ b/datamodel/app/extensions/extension_manager.py
@@ -26,7 +26,7 @@ def run_py_file(file_path: str, variables: dict = None):
     abs_file_path = Path(__file__).parent.resolve() / file_path
     varlist = [sys.executable, str(abs_file_path)]
     for key, value in variables.iteritems():
-        varlist.append("--"+key)
+        varlist.append("--" + key)
         varlist.append(value)
     result = subprocess.run(varlist, capture_output=True, text=True)
     if result.returncode != 0:
@@ -88,7 +88,7 @@ def load_extension(
                 run_sql_file(os.path.join(directory, filename), pg_service, variables)
             if filename.endswith(".py"):
                 print(f"Running {filename}")
-                run_py_file(os.path.join(directory, filename),variables)
+                run_py_file(os.path.join(directory, filename), variables)
 
     # re-create symbology triggers
     conn = psycopg.connect(f"service={pg_service}")
diff --git a/plugin/teksi_wastewater/interlis/interlis_importer_exporter.py b/plugin/teksi_wastewater/interlis/interlis_importer_exporter.py
index dca0974cc..aab279ad7 100644
--- a/plugin/teksi_wastewater/interlis/interlis_importer_exporter.py
+++ b/plugin/teksi_wastewater/interlis/interlis_importer_exporter.py
@@ -1,6 +1,7 @@
 import logging
 import os
 import tempfile
+from pathlib import Path
 
 from PyQt5.QtCore import Qt
 from PyQt5.QtWidgets import QApplication
@@ -27,7 +28,6 @@
 from .interlis_model_mapping.model_tww_od import ModelTwwOd
 from .utils.ili2db import InterlisTools
 from .utils.various import CmdException, LoggingHandlerContext, logger, make_log_path
-from pathlib import Path
 
 
 class InterlisImporterExporterStopped(Exception):
@@ -315,8 +315,12 @@ def _import_enable_symbology_triggers(self):
         DatabaseUtils.update_symbology()
 
     def _export_labels_file(
-        self, limit_to_selection, selected_labels_scales_indices, labels_file_path, export_model,
-        export_orientation=90.0
+        self,
+        limit_to_selection,
+        selected_labels_scales_indices,
+        labels_file_path,
+        export_model,
+        export_orientation=90.0,
     ):
         try:
             # We only import now to avoid useless exception if dependencies aren't met
diff --git a/plugin/teksi_wastewater/interlis/interlis_model_mapping/model_tww_ag6496.py b/plugin/teksi_wastewater/interlis/interlis_model_mapping/model_tww_ag6496.py
index 0096b72a3..fd377009a 100644
--- a/plugin/teksi_wastewater/interlis/interlis_model_mapping/model_tww_ag6496.py
+++ b/plugin/teksi_wastewater/interlis/interlis_model_mapping/model_tww_ag6496.py
@@ -1,5 +1,5 @@
 from geoalchemy2 import Geometry
-from sqlalchemy import Column, DateTime, Float, Integer, String, Boolean
+from sqlalchemy import Boolean, Column, DateTime, Float, Integer, String
 
 from .. import config
 from .model_base import ModelBase