diff --git a/.flake8 b/.flake8
index dfc22985b42..afe61c74642 100644
--- a/.flake8
+++ b/.flake8
@@ -24,8 +24,8 @@ per-file-ignores =
     doc/python/m.distance.py: E501
     gui/scripts/d.wms.py: E501
     gui/wxpython/image2target/g.gui.image2target.py: E501
-    gui/wxpython/modules/*: E722
-    gui/wxpython/nviz/*: F841, E266, E722, F403, F405
+    gui/wxpython/modules/*: F841, E722
+    gui/wxpython/nviz/*: E266, E722, F403, F405
     gui/wxpython/photo2image/*: F841, E722, E265
     gui/wxpython/photo2image/g.gui.photo2image.py: E501, F841
     gui/wxpython/psmap/*: F841, E266, E722, F405, F403
diff --git a/gui/wxpython/nviz/tools.py b/gui/wxpython/nviz/tools.py
index 20b1df1ffbd..153f8ffef86 100644
--- a/gui/wxpython/nviz/tools.py
+++ b/gui/wxpython/nviz/tools.py
@@ -667,7 +667,6 @@ def _createAnimationPage(self):
             parent=panel, id=wx.ID_ANY, label=" %s " % (_("Save image sequence"))
         )
         boxSizer = wx.StaticBoxSizer(box, wx.VERTICAL)
-        vSizer = wx.BoxSizer(wx.VERTICAL)
         gridSizer = wx.GridBagSizer(vgap=5, hgap=10)
 
         pwd = str(Path.cwd())
@@ -2817,7 +2816,6 @@ def OnAnimationFinished(self, mode):
         self.UpdateFrameIndex(index=0)
 
         slider = self.FindWindowById(self.win["anim"]["frameIndex"]["slider"])
-        text = self.FindWindowById(self.win["anim"]["frameIndex"]["text"])
 
         if mode == "record":
             count = anim.GetFrameCount()
@@ -2922,7 +2920,7 @@ def OnConstantSelection(self, event):
         layerIdx = self.FindWindowById(self.win["constant"]["surface"]).GetSelection()
         if layerIdx == wx.NOT_FOUND:
             return
-        name = _("constant#") + str(layerIdx + 1)
+
         data = self.mapWindow.constants[layerIdx]
         for attr, value in data["constant"].items():
             if attr == "color":
@@ -3123,8 +3121,6 @@ def _createIsosurfacePanel(self, parent):
     def _createSlicePanel(self, parent):
         panel = wx.Panel(parent=parent, id=wx.ID_ANY)
 
-        vSizer = wx.BoxSizer(wx.HORIZONTAL)
-
         box = StaticBox(
             parent=panel, id=wx.ID_ANY, label=" %s " % (_("Slice attributes"))
         )
@@ -3412,12 +3408,11 @@ def OnSetSurface(self, event):
         """Surface selected, currently used for fringes"""
         name = event.GetString()
         try:
-            data = self._getLayerPropertiesByName(name, mapType="raster")["surface"]
+            self._getLayerPropertiesByName(name, mapType="raster")["surface"]
         except:
             self.EnablePage("fringe", False)
             return
 
-        layer = self._getMapLayerByName(name, mapType="raster")
         self.EnablePage("fringe", True)
 
     def OnSetRaster(self, event):
@@ -3425,7 +3420,7 @@ def OnSetRaster(self, event):
         name = event.GetString()
         try:
             data = self._getLayerPropertiesByName(name, mapType="raster")["surface"]
-        except TypeError as e:
+        except TypeError:
             self.EnablePage("surface", False)
             return
 
@@ -4590,10 +4585,6 @@ def OnVolumeSelect(self, event):
             if not winUp.IsEnabled():
                 winUp.Enable()
 
-        # update dialog
-        name = self.FindWindowById(self.win["volume"]["map"]).GetValue()
-        layer = self._getMapLayerByName(name, mapType="raster_3d")
-
         if mode == "isosurf":
             data = self.GetLayerData("volume")["volume"]["isosurface"][selection]
             self.UpdateVolumeIsosurfPage(data)
@@ -4694,8 +4685,6 @@ def OnVolumeDelete(self, event):
         if list.GetCount() > 0:
             list.SetSelection(list.GetCount() - 1)
 
-        name = self.FindWindowById(self.win["volume"]["map"]).GetValue()
-        layer = self._getMapLayerByName(name, mapType="raster_3d")
         data = self.GetLayerData("volume")["volume"]
 
         vid = data["object"]["id"]
@@ -4736,8 +4725,6 @@ def OnVolumeMoveUp(self, event):
         if sel < 1:
             return  # this should not happen
 
-        name = self.FindWindowById(self.win["volume"]["map"]).GetValue()
-        layer = self._getMapLayerByName(name, mapType="raster_3d")
         data = self.GetLayerData("volume")["volume"]
 
         id = data["object"]["id"]
@@ -4776,8 +4763,6 @@ def OnVolumeMoveDown(self, event):
         if sel >= list.GetCount() - 1:
             return  # this should not happen
 
-        name = self.FindWindowById(self.win["volume"]["map"]).GetValue()
-        layer = self._getMapLayerByName(name, mapType="raster_3d")
         data = self.GetLayerData("volume")["volume"]
 
         id = data["object"]["id"]