diff --git a/app/musicmuster.py b/app/musicmuster.py
index d00bd8f..1fef6a0 100755
--- a/app/musicmuster.py
+++ b/app/musicmuster.py
@@ -680,13 +680,12 @@ class Window(QMainWindow, Ui_MainWindow):
     def test_function(self):
         "Placeholder for test function"
 
-        import ipdb
-        ipdb.set_trace()
+        pass
 
     def test_skip_to_end(self):
         "Skip current track to 1 second before silence"
 
-        if not self.playing():
+        if not self.playing:
             return
 
         self.music.set_position(self.current_track.silence_at - 1000)
diff --git a/app/playlists.py b/app/playlists.py
index 23132f4..8ca833b 100644
--- a/app/playlists.py
+++ b/app/playlists.py
@@ -47,6 +47,8 @@ class PlaylistTab(QTableWidget):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
 
+        self.id = None
+        self.name = None
         self.master_process = self.parent()
         self.setEditTriggers(QtWidgets.QAbstractItemView.NoEditTriggers)
         self.setAlternatingRowColors(True)
@@ -332,7 +334,7 @@ class PlaylistTab(QTableWidget):
         self._repaint()
 
     def clear_next(self):
-        "Clear next track"
+        """Clear next track"""
 
         self._meta_clear_next()
         self._repaint()
@@ -500,7 +502,7 @@ class PlaylistTab(QTableWidget):
         self.selectRow(row)
 
     def select_played_tracks(self):
-        "Select all played tracks in playlist"
+        """Select all played tracks in playlist"""
 
         # Need to allow multiple rows to be selected
         self.setSelectionMode(QtWidgets.QAbstractItemView.MultiSelection)
@@ -1277,7 +1279,7 @@ class PlaylistTab(QTableWidget):
         self.setItem(row, self.COL_END_TIME, item)
 
     def _set_row_start_time(self, row, time):
-        "Set passed row start time to passed time"
+        """Set passed row start time to passed time"""
         try:
             time_str = time.strftime("%H:%M:%S")
         except AttributeError:
diff --git a/pyproject.toml b/pyproject.toml
index 0c4b42e..03f65d5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,6 +16,7 @@ alembic = "^1.7.5"
 psutil = "^5.9.0"
 PyQtWebEngine = "^5.15.5"
 pydub = "^0.25.1"
+PyQt5-sip = "^12.9.0"
 
 [tool.poetry.dev-dependencies]