diff --git a/pyproject.toml b/pyproject.toml
index 0ed8e7e..78c306b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,6 +19,9 @@ dependencies = [
 # ...but use a different line length.
 line-length = 120
 
+# Ignoriere automatisch generierte UI-Dateien
+extend-exclude = ["*_ui.py"]
+
 [dependency-groups]
 dev = [
     "ruff>=0.14.8",
diff --git a/src/ui/MainWindow.py b/src/ui/MainWindow.py
index 12519db..ce2ebac 100644
--- a/src/ui/MainWindow.py
+++ b/src/ui/MainWindow.py
@@ -3199,7 +3199,7 @@ class MainWindow(QMainWindow):
         map_key = f"{xml_file_name}|{xsl_id_str}"
         if map_key not in self.xml_item_map and self.xml_item_map:
             # Zeige erste Keys zur Diagnose
-            sample_keys = list(self.xml_item_map.keys())[:3]
+            list(self.xml_item_map.keys())[:3]
         logger.info(f"Suche TreeWidget-Item für: '{map_key}'")
         logger.info(f"Map hat {len(self.xml_item_map)} Einträge")
         tree_item = self.xml_item_map.get(map_key)
diff --git a/src/ui/TreeNodeEditDialog.py b/src/ui/TreeNodeEditDialog.py
index fd883e1..b039622 100644
--- a/src/ui/TreeNodeEditDialog.py
+++ b/src/ui/TreeNodeEditDialog.py
@@ -2,7 +2,6 @@ from PySide6.QtWidgets import QDialog, QTableWidgetItem, QMessageBox
 from PySide6.QtCore import Qt
 
 from ui.TreeNodeEditDialog_ui import Ui_TreeNodeEditDialog
-from conf import TreeNode
 
 
 class TreeNodeEditDialog(QDialog):
diff --git a/src/ui/XslFileEditDialog.py b/src/ui/XslFileEditDialog.py
index 99a72b0..2059356 100644
--- a/src/ui/XslFileEditDialog.py
+++ b/src/ui/XslFileEditDialog.py
@@ -2,7 +2,6 @@ from PySide6.QtWidgets import QDialog, QTableWidgetItem, QMessageBox
 from PySide6.QtCore import Qt
 
 from ui.XslFileEditDialog_ui import Ui_XslFileEditDialog
-from conf import XslFile
 
 
 class XslFileEditDialog(QDialog):
diff --git a/test_xml_hash_duplicate_detection.py b/test_xml_hash_duplicate_detection.py
index 61f1dd9..38c44af 100644
--- a/test_xml_hash_duplicate_detection.py
+++ b/test_xml_hash_duplicate_detection.py
@@ -225,11 +225,11 @@ def test_integration_workflow():
         assert duplicate_found is not None, "Duplikat sollte gefunden werden"
         assert duplicate_found.xml == Path("xml/existing3.xml"), "Falsches Duplikat gefunden"
         
-        print(f"Workflow-Test erfolgreich:")
+        print("Workflow-Test erfolgreich:")
         print(f"  - Neue Datei: {new_xml_file.name}")
         print(f"  - Berechneter Hash: {new_hash}")
         print(f"  - Duplikat gefunden: {duplicate_found.xml}")
-        print(f"  - Automatische Zuordnung würde erfolgen")
+        print("  - Automatische Zuordnung würde erfolgen")
         
         print("[OK] Integration Workflow funktioniert korrekt")