Made a small memory optimisation by making the fonts a class variable and not an instance variable.

wobuzz/ui/playlist.py

@@ -10,6 +10,10 @@ from .track import TrackItem
 class PlaylistView(QTreeWidget):
     itemDropped = pyqtSignal(QTreeWidget, list)
 
+    normal_font = QFont()
+    bold_font = QFont()
+    bold_font.setBold(True)
+
     def __init__(self, playlist, parent=None):
         super().__init__(parent)
 
@@ -18,10 +22,6 @@ class PlaylistView(QTreeWidget):
 
         playlist.view = self
 
-        self.normal_font = QFont()
-        self.bold_font = QFont()
-        self.bold_font.setBold(True)
-
         self.setDragDropMode(QAbstractItemView.DragDropMode.InternalMove)
         self.setSelectionMode(QAbstractItemView.SelectionMode.ExtendedSelection)