wxGUI: Fixed E722: bare 'except' in iscatt/ (#4427)

.flake8

@@ -26,8 +26,8 @@ per-file-ignores =
     doc/gui/wxpython/example/dialogs.py: F401
     gui/scripts/d.wms.py: E501
     gui/wxpython/image2target/*: F841, E722
-    gui/wxpython/image2target/g.gui.image2target.py: E501
-    gui/wxpython/iscatt/*: F841, E722, F405, F403
+    gui/wxpython/image2target/g.gui.image2target.py: E501, F841
+    gui/wxpython/iscatt/*: F841, F405, F403
     gui/wxpython/lmgr/frame.py: F841, E722
     # layertree still includes some formatting issues (it is ignored by Black)
     gui/wxpython/lmgr/layertree.py: E722, E266, W504, E225

gui/wxpython/iscatt/controllers.py

@@ -597,7 +597,7 @@ def _renderscattplts(self, scatt_ids, cats, cats_attrs):
                 try:
                     self.cat_ids.remove(c)
                     scatt_dt[c]["render"] = True
-                except:
+                except ValueError:
                     scatt_dt[c]["render"] = False
 
             if self.scatt_mgr.pol_sel_mode[0]:
@@ -674,7 +674,7 @@ def ChangePosition(self, cat_id, new_pos):
 
         try:
             pos = self.cats_ids.index(cat_id)
-        except:
+        except ValueError:
             return False
 
         if pos > new_pos:

gui/wxpython/iscatt/frame.py

@@ -249,7 +249,7 @@ def CursorPlotMove(self, x, y, scatt_id):
             x = int(round(x))
             y = int(round(y))
             coords = True
-        except:
+        except TypeError:
             coords = False
 
         pane = self._getPane(scatt_id)